fenner_1973 =========== W\. R\. Fenner, H\. A\. Hyatt, J\. M\. Kellam and S\. P\. S\. Porto, "Raman cross section of some simple gases", J\. Opt\. Soc\. Am\. 63, 73 \(1973\) `Source record `__ · :doc:`Catalogue ` · :doc:`Review register ` DOI: `10\.1364/josa\.63\.000073 `__ **Source kind:** measurement **Recorded technique:** Spontaneous Raman scattering of the 488\.0 nm argon\-ion line \(typically 500 mW, single pass, Brewster\-window cell\) at 90 deg, collected by an f/0\.95 lens into a Spex 1400 double monochromator with photon counting \(EMI 6256S\); the geometries z\(x,x\)y and z\(x,z\)y \(laser polarization, scattered polarization analysed\)\. Spectrometer response calibrated against an NBS standard lamp for polarized and unpolarized light\. Each gas measured at 1, 3/4, 1/2 and 1/4 atm, the slope of count rate against pressure giving the cross section relative to the N2 Q branch \(2331 cm\-1\)\. The absolute N2 cross section from the calibrated spectrometer \(Eq\. 6\) and, separately, against the 992 cm\-1 line of liquid benzene\. Room temperature, 22 C \(pp\. 73\-75\)\. **Materials in structured entries:** CH4, CO, CO2, H2, N2, N2O, O2 **Dataset quantities:** raman\_cross\_section, raman\_cross\_section\_ratio, raman\_shift, rotational\_constant **Contents:** 44 datasets; 0 formulas. Curation notes -------------- Journal pages 73\-77 = PDF pages 1\-5 \(page n of the PDF is p\. 72 \+ n\)\. Identity checked on the first page\. The library's identity is VALIDATED\_WITH\_WARNINGS only because the PDF prints no DOI\. The paper studies N2, O2, H2, CO, NO, CO2, SO2, N2O, H2S, NH3, ND3, CH4, C2H6 and C6H6; NO, SO2, H2S, NH3, ND3, C2H6 and C6H6 are not curated species and are not transcribed\. SF6, D2 and O3 are not in the paper\. H2 is normal hydrogen \(room\-temperature equilibrium; the paper does not say otherwise\)\. EXCITATION WAVELENGTH\: every value is at 488\.0 nm, the argon\-ion line; the paper does not say air or vacuum\. It is recorded as standard air \(the line's laboratory wavelength\); the difference, 0\.14 nm, changes a nu^4 scaling by 0\.1 %, far below the stated uncertainties\. TABLE I \(p\. 2, 'Pertinent properties of molecules studied'; image checked\)\: the vibrational shift \('Vib\. freq\.', cm\-1\) and the rotational constant \(cm\-1\) of each molecule, with the Raman wavelength of the line \(nm\), symmetry and point group\. No source is given for the shifts or the constants and they are not measured here\: the datasets table1\_shift\_\* and table1\_B\_\* are use = "check"\. Whether the constants are B\_e or B\_0 is not said\. Table I prints CO's point group as C\_inf h \(it is C\_inf v\)\: not a value, no erratum\. The Raman wavelengths \(N2 550\.6, O2 528\.1, H2 612\.3, CO 545\.1, CO2 523\.5 and 520\.7, N2O 520\.6 and 547\.4, CH4 568\.9 nm\) follow from 488\.0 nm and the shifts and are not stored\. TABLE II \(p\. 3, 'Ratios of differential Raman cross sections of various vibrational lines to that of the nu1 vibration in N2 at 488\.0 nm\. Other workers' results adjusted to 488\.0 nm using an assumed frequency dependence of nu\_R^4'; image checked\)\: this paper's column \(datasets ratio\_\*, primary\) and the other workers' columns \(datasets ratio\_\*\_others, reproduced; rows labelled by the column\: F & C = Fouche and Chang, refs\. 3 and 4; M, H, B = Murphy, Holzer and Bernstein, ref\. 2 = murphy\_1969; S, C, W = Stansbury, Crawford and Welsh, ref\. 1; P, G, L = Penney, Goldman and Lapp, ref\. 5\)\. The other workers' values are not their printed numbers\: Fenner et al\. rescaled them to 488\.0 nm with nu\_R^4\. N2's row \(1\.0 in every column\) is the reference and is not stored\. 'We found the reproducibility of our relative ratios to be \+\-10% for three sets of measurements, each set being at a different time and with altered scattering dimensions' \(p\. 3\)\: recorded as a relative uncertainty of 0\.10, level not stated\. The other workers' uncertainties are 'usually \+\-10%' \(p\. 4\), not per value\. 'H2 \(sum\)' is the sum over the Q branch, 'H2 \(Q\(1\)\)' the Q\(1\) line alone \(not defined further\)\. Geometry\: the paper does not say whether Table II's ratios are of the parallel component \(z\(x,x\)y\) or of both polarizations; Table IV's absolute value is 'for orthogonal scattering geometry z\(x,x\)y and a depolarization ratio of zero\. Corrections for finite depolarization are typically a few percent' \(p\. 4\)\. The ratios are per molecule of the gas \(count\-rate slopes against pressure\)\. TEXT \(p\. 4\)\: the ratios obtained a second way, from the measured Rayleigh\-to\-Raman ratio of each linear molecule and the Rayleigh cross section computed from refractive indices \(ref\. 10\-11\: dsigma/dOmega\_Ray = \(3/8 pi\) sigma\_tot, sigma\_tot = 128 pi^5 alpha^2/\(3 lambda^4\), no depolarization\)\: 'The vibrational cross section of these molecules relative to the 2331\-cm\-1 line gave values 1\.1, 1\.5, 1\.0, and 1\.4 for molecules\: O2, Q\(1\) of H2, CO, and nu1 vibration of CO2, respectively\. These values are in good agreement with those determined by direct measurement' \(datasets ratio\_\*\_rayleigh, check\)\. The Rayleigh\-to\-vibrational ratios themselves are not printed\. TABLE III \(p\. 3, 'Ratio of Raman cross sections of the rotational lines of certain molecules to that of the Q\-branch of the nu1 vibration of the same molecule\. The rotational cross section is the differential cross section for both polarizations at 90 deg\. All lines refers to the sum of all Stokes and anti\-Stokes rotational lines; peak refers to the strongest Stokes line\. Data taken at 22 C'; notes\: H2 'Referred to Q\(1\) vibrational line', CO2 'Referred to nu1 vibrational line'; image checked\)\: datasets rotational\_\* \(peak line and all lines\) and vibrot\_N2, vibrot\_O2 \(the 'vib\-rot' rows\: 'the vibrational\-rotational cross section of all lines relative to the Q branch nu1 vibration for nitrogen and oxygen', p\. 4, i\.e\. the O and S branches of the vibrational band\), primary\. The peak line is printed '0\(J\)' \(N2 0\(6\), O2 0\(7\), H2 0\(1\), CO 0\(6\), CO2 0\(16\)\), kept as printed\: by the caption it is the strongest Stokes line \(Delta J = \+2\) from level J\. The peak and total are not the measured intensities themselves\: the rotational intensities were fitted to Eq\. \(7\), \(dsigma/dOmega\)\_J = K C\(lambda\_R\) nu\_R^4 S\_J exp\(\-hcBJ\(J\+1\)/kT\) with the Placzek\-Teller S\_J \(3\(J\+1\)\(J\+2\)/\(2\(2J\+3\)\) Stokes, 3\(J\-1\)J/\(2\(2J\-1\)\) anti\-Stokes\), whose fitted T 'in all cases, agreed with the measured ambient temperature, 22 C'; 'The intensities of the strongest rotational line and the sum of all lines \(both Stokes and anti\-Stokes\) were then determined from Eq\. \(7\) and the least\-squares value of K' \(p\. 4\)\. No uncertainty is stated for Table III\. TABLE IV \(p\. 3, 'Absolute differential Raman cross section of the vibrational line in N2 at 488\.0 nm\. Results of other authors were adjusted using a nu\_R^4 frequency dependence', cm2/ster\-mol, i\.e\. cm2 sr\-1 per molecule; image checked\)\: \- 'This paper \- calibrated spectrometer' 3\.3 \+\- 1\.1 x 10^\-31 \(dataset absolute\_N2, primary\)\: 'We believe the result using the calibrated spectrometer to be our most accurate' \(p\. 4\)\. 'Our value 3\.3 x 10^\-31 cm2/sr\-mol represents the statistical mean of six individual determinations \.\.\. The average deviation from the mean value for these determinations was \+\-0\.2 x 10^\-31 cm2/sr or \+\-5%\. However, the correct percentage numerical uncertainty \(\+\-35%\) was determined by estimation of the uncertainty of each of the eight independent parameters in Eq\. \(6\) and application of standard error analysis' \(p\. 4\)\. The printed \+\-1\.1 is that estimate \(level not stated\)\. \- 'This paper \- comparison with nu2 of C6H6' 4\.3 x 10^\-31 \(absolute\_N2\_benzene, check\), with the benzene standard 3\.25 x 10^\-29 cm2/ster\-mol of Kato and Takuma \(ref\. 12, J\. Opt\. Soc\. Am\. 61, 347 \(1971\)\); 'subject to more experimental uncertainty' \(p\. 4\)\. \- Others \(absolute\_N2\_others, reproduced\)\: P, G, & L \(ref\. 5\) 5\.5 \+\- 0\.3; F & C \(ref\. 4\) 5\.6 \+\- 2\.2; M, H, & B \(ref\. 2, murphy\_1969\) 5\.5; S, C, & W \(ref\. 1\) 4\.8, all x 10^\-31 and rescaled to 488\.0 nm by the authors\. The geometry of the absolute values\: z\(x,x\)y, i\.e\. the component polarized parallel to the laser, with a depolarization ratio taken as zero \(p\. 4\)\. The authors' own later value is hyatt\_1973 \(5\.4 \+\- 0\.3 x 10^\-31 at 488\.0 nm, against the H2 rotational line\), 64 % above this paper's 3\.3; Danichkin et al\.'s survey recommends 5\.5 \+\- 0\.2 \(danichkin\_1981\)\. ABSOLUTE CROSS SECTIONS OF OTHER LINES follow from Tables II\-IV \(p\. 4\); none is printed\. DEPOLARIZATION\: no depolarization ratio is tabulated\. The primary lines 'are of A1 symmetry with very small depolarized component' \(p\. 1\); the rotational lines are depolarized\. REPRODUCTIONS ELSEWHERE\: danichkin\_1981 cites this paper as its ref\. \[12\] in its Table 1 ratios \(O2, H2, CO, CO2, N2O, CH4\) and Table 2 \(the two absolute values\), converted by Danichkin et al\. to their system \(both polarization components, per molecule of the lower level\)\: see that record\. **Recorded bibliographic identity status:** VALIDATED\_WITH\_WARNINGS. This concerns identification of the source; it does not establish the scientific correctness of its contents. Datasets -------- fenner\_1973/table1\_shift\_N2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "table1_shift_N2", "material": "N2", "file": "N2/fenner_1973__table1_shift_N2.csv", "table": "tbl_0791ca776a3c", "quantity": "raman_shift", "unit": "cm-1", "abscissa": "label", "use": "check", "parameters": { "transition": "v=0-1 Q branch" } } Table I \(p\. 2\), 'Vib\. freq\.' of the vibrational line, to 1 cm\-1; source not stated, not measured here\. fenner\_1973/table1\_B\_N2 ~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "table1_B_N2", "material": "N2", "file": "N2/fenner_1973__table1_B_N2.csv", "table": "tbl_0791ca776a3c", "quantity": "rotational_constant", "unit": "cm-1", "abscissa": "label", "use": "check", "parameters": { "constant": "B (not stated whether B_e or B_0)" } } Table I \(p\. 2\), 'Rotational constant \(cm\-1\)'; source not stated \(B\_e or B\_0 not said\), not measured here; used in Eq\. \(7\) for the rotational intensities\. fenner\_1973/table1\_shift\_O2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "table1_shift_O2", "material": "O2", "file": "O2/fenner_1973__table1_shift_O2.csv", "table": "tbl_0791ca776a3c", "quantity": "raman_shift", "unit": "cm-1", "abscissa": "label", "use": "check", "parameters": { "transition": "v=0-1 Q branch" } } Table I \(p\. 2\), 'Vib\. freq\.' of the vibrational line, to 1 cm\-1; source not stated, not measured here\. fenner\_1973/table1\_B\_O2 ~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "table1_B_O2", "material": "O2", "file": "O2/fenner_1973__table1_B_O2.csv", "table": "tbl_0791ca776a3c", "quantity": "rotational_constant", "unit": "cm-1", "abscissa": "label", "use": "check", "parameters": { "constant": "B (not stated whether B_e or B_0)" } } Table I \(p\. 2\), 'Rotational constant \(cm\-1\)'; source not stated \(B\_e or B\_0 not said\), not measured here\. fenner\_1973/table1\_shift\_H2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "table1_shift_H2", "material": "H2", "file": "H2/fenner_1973__table1_shift_H2.csv", "table": "tbl_0791ca776a3c", "quantity": "raman_shift", "unit": "cm-1", "abscissa": "label", "use": "check", "parameters": { "transition": "v=0-1 Q branch" } } Table I \(p\. 2\), 'Vib\. freq\.' of the vibrational line, to 1 cm\-1 \(4161\: not a single Q line named\); source not stated, not measured here\. fenner\_1973/table1\_B\_H2 ~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "table1_B_H2", "material": "H2", "file": "H2/fenner_1973__table1_B_H2.csv", "table": "tbl_0791ca776a3c", "quantity": "rotational_constant", "unit": "cm-1", "abscissa": "label", "use": "check", "parameters": { "constant": "B (not stated whether B_e or B_0)" } } Table I \(p\. 2\), 'Rotational constant \(cm\-1\)'; source not stated \(B\_e or B\_0 not said\), not measured here\. fenner\_1973/table1\_shift\_CO ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "table1_shift_CO", "material": "CO", "file": "CO/fenner_1973__table1_shift_CO.csv", "table": "tbl_0791ca776a3c", "quantity": "raman_shift", "unit": "cm-1", "abscissa": "label", "use": "check", "parameters": { "transition": "v=0-1 Q branch" } } Table I \(p\. 2\), 'Vib\. freq\.' of the vibrational line, to 1 cm\-1; source not stated, not measured here\. fenner\_1973/table1\_B\_CO ~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "table1_B_CO", "material": "CO", "file": "CO/fenner_1973__table1_B_CO.csv", "table": "tbl_0791ca776a3c", "quantity": "rotational_constant", "unit": "cm-1", "abscissa": "label", "use": "check", "parameters": { "constant": "B (not stated whether B_e or B_0)" } } Table I \(p\. 2\), 'Rotational constant \(cm\-1\)'; source not stated \(B\_e or B\_0 not said\), not measured here\. fenner\_1973/table1\_shift\_CO2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "table1_shift_CO2", "material": "CO2", "file": "CO2/fenner_1973__table1_shift_CO2.csv", "table": "tbl_0791ca776a3c", "quantity": "raman_shift", "unit": "cm-1", "abscissa": "label", "use": "check", "parameters": { "transition": "Q branch (per row: nu1 or 2nu2)" } } Table I \(p\. 2\), 'Vib\. freq\.' of the two lines of the Fermi dyad \(rows nu1 1388 and 2nu2 1286, the paper's designations\), to 1 cm\-1; source not stated, not measured here\. fenner\_1973/table1\_B\_CO2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "table1_B_CO2", "material": "CO2", "file": "CO2/fenner_1973__table1_B_CO2.csv", "table": "tbl_0791ca776a3c", "quantity": "rotational_constant", "unit": "cm-1", "abscissa": "label", "use": "check", "parameters": { "constant": "B (not stated whether B_e or B_0)" } } Table I \(p\. 2\), 'Rotational constant \(cm\-1\)'; source not stated \(B\_e or B\_0 not said\), not measured here\. fenner\_1973/table1\_shift\_N2O ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "table1_shift_N2O", "material": "N2O", "file": "N2O/fenner_1973__table1_shift_N2O.csv", "table": "tbl_0791ca776a3c", "quantity": "raman_shift", "unit": "cm-1", "abscissa": "label", "use": "check", "parameters": { "transition": "Q branch (per row: nu1 or nu3)" } } Table I \(p\. 2\), 'Vib\. freq\.' \(rows nu1 1285 and nu3 2224, the paper's designations\), to 1 cm\-1; source not stated, not measured here\. fenner\_1973/table1\_B\_N2O ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "table1_B_N2O", "material": "N2O", "file": "N2O/fenner_1973__table1_B_N2O.csv", "table": "tbl_0791ca776a3c", "quantity": "rotational_constant", "unit": "cm-1", "abscissa": "label", "use": "check", "parameters": { "constant": "B (not stated whether B_e or B_0)" } } Table I \(p\. 2\), 'Rotational constant \(cm\-1\)'; source not stated \(B\_e or B\_0 not said\), not measured here\. fenner\_1973/table1\_shift\_CH4 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "table1_shift_CH4", "material": "CH4", "file": "CH4/fenner_1973__table1_shift_CH4.csv", "table": "tbl_0791ca776a3c", "quantity": "raman_shift", "unit": "cm-1", "abscissa": "label", "use": "check", "parameters": { "transition": "nu1 Q branch" } } Table I \(p\. 2\), 'Vib\. freq\.' of nu1, to 1 cm\-1; source not stated, not measured here\. fenner\_1973/ratio\_O2 ~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_O2", "material": "O2", "file": "O2/fenner_1973__ratio_O2.csv", "table": "tbl_422afc34de03", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "primary", "uncertainty": { "relative": 0.1, "level": "not stated" }, "parameters": { "transition": "v=0-1 Q branch (1556 cm-1)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)", "geometry": "90 deg, laser polarized; z(x,x)y and z(x,z)y analysed (not stated which Table II uses)" } } Table II \(p\. 3\), 'This paper' column\: the O2 vibrational line \(1556 cm\-1\) over the N2 Q branch at 488\.0 nm, per molecule\. Reproducibility \+\-10 % \(p\. 3\)\. See the record's notes on the geometry\. fenner\_1973/ratio\_O2\_others ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_O2_others", "material": "O2", "file": "O2/fenner_1973__ratio_O2_others.csv", "table": "tbl_422afc34de03", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "reproduced", "reproduced_from": [ "D. G. Fouche and R. K. Chang, Appl. Phys. Letters 18, 579 (1971); 20, 256 (1972)", "murphy_1969", "E. J. Stansbury, M. F. Crawford, and H. L. Welch, Can. J. Phys. 31, 954 (1953)", "C. M. Penney, L. M. Goldman, and M. Lapp, Nature Phys. Sci. 235, 110 (1972)" ], "parameters": { "transition": "v=0-1 Q branch (1556 cm-1)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)" } } Table II \(p\. 3\), the other workers' columns \(row = the column\: F & C refs\. 3\-4, M, H, B ref\. 2, S, C, W ref\. 1, P, G, L ref\. 5\), 'adjusted to 488\.0 nm using an assumed frequency dependence of nu\_R^4' by Fenner et al\. Uncertainties not given per value \('usually \+\-10%', p\. 4\)\. fenner\_1973/ratio\_H2\_sum ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_H2_sum", "material": "H2", "file": "H2/fenner_1973__ratio_H2_sum.csv", "table": "tbl_422afc34de03", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "primary", "uncertainty": { "relative": 0.1, "level": "not stated" }, "parameters": { "transition": "v=0-1 Q branch, sum of the Q lines", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)", "geometry": "90 deg, laser polarized; z(x,x)y and z(x,z)y analysed (not stated which Table II uses)" } } Table II \(p\. 3\), 'This paper' column, row 'H2 \(sum\)' \(4161 cm\-1\)\: the whole H2 Q branch \(normal H2, 22 C\) over the N2 Q branch at 488\.0 nm, per molecule\. Reproducibility \+\-10 % \(p\. 3\)\. fenner\_1973/ratio\_H2\_sum\_others ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_H2_sum_others", "material": "H2", "file": "H2/fenner_1973__ratio_H2_sum_others.csv", "table": "tbl_422afc34de03", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "reproduced", "reproduced_from": [ "D. G. Fouche and R. K. Chang, Appl. Phys. Letters 18, 579 (1971); 20, 256 (1972)", "murphy_1969", "E. J. Stansbury, M. F. Crawford, and H. L. Welch, Can. J. Phys. 31, 954 (1953)" ], "parameters": { "transition": "v=0-1 Q branch, sum of the Q lines", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)" } } Table II \(p\. 3\), row 'H2 \(sum\)', the other workers' columns \(row = the column\), 'adjusted to 488\.0 nm using an assumed frequency dependence of nu\_R^4' by Fenner et al\.; P, G, L prints '\.\.\.'\. fenner\_1973/ratio\_H2\_Q1 ~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_H2_Q1", "material": "H2", "file": "H2/fenner_1973__ratio_H2_Q1.csv", "table": "tbl_422afc34de03", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "primary", "uncertainty": { "relative": 0.1, "level": "not stated" }, "parameters": { "transition": "v=0-1 Q(1)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)", "geometry": "90 deg, laser polarized; z(x,x)y and z(x,z)y analysed (not stated which Table II uses)" } } Table II \(p\. 3\), 'This paper' column, row 'H2 \(Q\(1\)\)'\: the Q\(1\) line of normal H2 at 22 C over the N2 Q branch at 488\.0 nm, per molecule of the gas \(not per molecule in J = 1\)\. Reproducibility \+\-10 % \(p\. 3\)\. No other worker's value\. fenner\_1973/ratio\_CO ~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_CO", "material": "CO", "file": "CO/fenner_1973__ratio_CO.csv", "table": "tbl_422afc34de03", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "primary", "uncertainty": { "relative": 0.1, "level": "not stated" }, "parameters": { "transition": "v=0-1 Q branch (2145 cm-1)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)", "geometry": "90 deg, laser polarized; z(x,x)y and z(x,z)y analysed (not stated which Table II uses)" } } Table II \(p\. 3\), 'This paper' column\: the CO vibrational line \(2145 cm\-1\) over the N2 Q branch at 488\.0 nm\. Reproducibility \+\-10 % \(p\. 3\)\. fenner\_1973/ratio\_CO\_others ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_CO_others", "material": "CO", "file": "CO/fenner_1973__ratio_CO_others.csv", "table": "tbl_422afc34de03", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "reproduced", "reproduced_from": [ "D. G. Fouche and R. K. Chang, Appl. Phys. Letters 18, 579 (1971); 20, 256 (1972)", "murphy_1969", "C. M. Penney, L. M. Goldman, and M. Lapp, Nature Phys. Sci. 235, 110 (1972)" ], "parameters": { "transition": "v=0-1 Q branch (2145 cm-1)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)" } } Table II \(p\. 3\), row CO, the other workers' columns \(row = the column\), 'adjusted to 488\.0 nm using an assumed frequency dependence of nu\_R^4' by Fenner et al\.; S, C, W prints '\.\.\.'\. fenner\_1973/ratio\_CO2\_nu1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_CO2_nu1", "material": "CO2", "file": "CO2/fenner_1973__ratio_CO2_nu1.csv", "table": "tbl_422afc34de03", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "primary", "uncertainty": { "relative": 0.1, "level": "not stated" }, "parameters": { "transition": "nu1 Q branch (1388 cm-1)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)", "geometry": "90 deg, laser polarized; z(x,x)y and z(x,z)y analysed (not stated which Table II uses)" } } Table II \(p\. 3\), 'This paper' column, row 'CO2\(nu1\)' \(1388 cm\-1, the upper member of the Fermi dyad\) over the N2 Q branch at 488\.0 nm, per molecule of the gas\. Reproducibility \+\-10 % \(p\. 3\)\. fenner\_1973/ratio\_CO2\_nu1\_others ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_CO2_nu1_others", "material": "CO2", "file": "CO2/fenner_1973__ratio_CO2_nu1_others.csv", "table": "tbl_422afc34de03", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "reproduced", "reproduced_from": [ "D. G. Fouche and R. K. Chang, Appl. Phys. Letters 18, 579 (1971); 20, 256 (1972)", "murphy_1969", "E. J. Stansbury, M. F. Crawford, and H. L. Welch, Can. J. Phys. 31, 954 (1953)", "C. M. Penney, L. M. Goldman, and M. Lapp, Nature Phys. Sci. 235, 110 (1972)" ], "parameters": { "transition": "nu1 Q branch (1388 cm-1)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)" } } Table II \(p\. 3\), row 'CO2\(nu1\)', the other workers' columns \(row = the column\), 'adjusted to 488\.0 nm using an assumed frequency dependence of nu\_R^4' by Fenner et al\. Stansbury et al\.'s 4\.0 is three times the others \(uncommented\)\. fenner\_1973/ratio\_CO2\_2nu2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_CO2_2nu2", "material": "CO2", "file": "CO2/fenner_1973__ratio_CO2_2nu2.csv", "table": "tbl_422afc34de03", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "primary", "uncertainty": { "relative": 0.1, "level": "not stated" }, "parameters": { "transition": "2nu2 Q branch (1286 cm-1)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)", "geometry": "90 deg, laser polarized; z(x,x)y and z(x,z)y analysed (not stated which Table II uses)" } } Table II \(p\. 3\), 'This paper' column, row 'CO2\(2nu2\)' \(1286 cm\-1, the lower member of the Fermi dyad\) over the N2 Q branch at 488\.0 nm\. Reproducibility \+\-10 % \(p\. 3\)\. fenner\_1973/ratio\_CO2\_2nu2\_others ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_CO2_2nu2_others", "material": "CO2", "file": "CO2/fenner_1973__ratio_CO2_2nu2_others.csv", "table": "tbl_422afc34de03", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "reproduced", "reproduced_from": [ "D. G. Fouche and R. K. Chang, Appl. Phys. Letters 18, 579 (1971); 20, 256 (1972)", "murphy_1969" ], "parameters": { "transition": "2nu2 Q branch (1286 cm-1)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)" } } Table II \(p\. 3\), row 'CO2\(2nu2\)', the other workers' columns \(row = the column\), 'adjusted to 488\.0 nm using an assumed frequency dependence of nu\_R^4' by Fenner et al\. fenner\_1973/ratio\_N2O\_nu1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_N2O_nu1", "material": "N2O", "file": "N2O/fenner_1973__ratio_N2O_nu1.csv", "table": "tbl_422afc34de03", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "primary", "uncertainty": { "relative": 0.1, "level": "not stated" }, "parameters": { "transition": "nu1 Q branch (1285 cm-1)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)", "geometry": "90 deg, laser polarized; z(x,x)y and z(x,z)y analysed (not stated which Table II uses)" } } Table II \(p\. 3\), 'This paper' column, row 'N2O\(nu1\)' \(1285 cm\-1\) over the N2 Q branch at 488\.0 nm\. Reproducibility \+\-10 % \(p\. 3\)\. fenner\_1973/ratio\_N2O\_nu1\_others ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_N2O_nu1_others", "material": "N2O", "file": "N2O/fenner_1973__ratio_N2O_nu1_others.csv", "table": "tbl_422afc34de03", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "reproduced", "reproduced_from": [ "D. G. Fouche and R. K. Chang, Appl. Phys. Letters 18, 579 (1971); 20, 256 (1972)" ], "parameters": { "transition": "nu1 Q branch (1285 cm-1)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)" } } Table II \(p\. 3\), row 'N2O\(nu1\)', Fouche and Chang's value \(refs\. 3\-4\) 'adjusted to 488\.0 nm using an assumed frequency dependence of nu\_R^4' by Fenner et al\. fenner\_1973/ratio\_N2O\_nu3 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_N2O_nu3", "material": "N2O", "file": "N2O/fenner_1973__ratio_N2O_nu3.csv", "table": "tbl_422afc34de03", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "primary", "uncertainty": { "relative": 0.1, "level": "not stated" }, "parameters": { "transition": "nu3 Q branch (2224 cm-1)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)", "geometry": "90 deg, laser polarized; z(x,x)y and z(x,z)y analysed (not stated which Table II uses)" } } Table II \(p\. 3\), 'This paper' column, row 'N2O\(nu3\)' \(2224 cm\-1; nu3 in the paper's numbering, the N\-N stretch\) over the N2 Q branch at 488\.0 nm\. Reproducibility \+\-10 % \(p\. 3\)\. fenner\_1973/ratio\_N2O\_nu3\_others ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_N2O_nu3_others", "material": "N2O", "file": "N2O/fenner_1973__ratio_N2O_nu3_others.csv", "table": "tbl_422afc34de03", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "reproduced", "reproduced_from": [ "D. G. Fouche and R. K. Chang, Appl. Phys. Letters 18, 579 (1971); 20, 256 (1972)" ], "parameters": { "transition": "nu3 Q branch (2224 cm-1)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)" } } Table II \(p\. 3\), row 'N2O\(nu3\)', Fouche and Chang's value \(refs\. 3\-4\) 'adjusted to 488\.0 nm using an assumed frequency dependence of nu\_R^4' by Fenner et al\. fenner\_1973/ratio\_CH4\_nu1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_CH4_nu1", "material": "CH4", "file": "CH4/fenner_1973__ratio_CH4_nu1.csv", "table": "tbl_422afc34de03", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "primary", "uncertainty": { "relative": 0.1, "level": "not stated" }, "parameters": { "transition": "nu1 Q branch (2914 cm-1)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)", "geometry": "90 deg, laser polarized; z(x,x)y and z(x,z)y analysed (not stated which Table II uses)" } } Table II \(p\. 3\), 'This paper' column, row 'CH4\(nu1\)' \(2914 cm\-1\) over the N2 Q branch at 488\.0 nm\. Reproducibility \+\-10 % \(p\. 3\)\. 'Notable exceptions are our systematically lower values in comparison with pre\-laser data for the polyatomic hydrocarbons\: methane, ethane and benzene' \(p\. 4\)\: 6\.0 against 7\.0\-8\.1\. fenner\_1973/ratio\_CH4\_nu1\_others ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_CH4_nu1_others", "material": "CH4", "file": "CH4/fenner_1973__ratio_CH4_nu1_others.csv", "table": "tbl_422afc34de03", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "reproduced", "reproduced_from": [ "D. G. Fouche and R. K. Chang, Appl. Phys. Letters 18, 579 (1971); 20, 256 (1972)", "murphy_1969", "E. J. Stansbury, M. F. Crawford, and H. L. Welch, Can. J. Phys. 31, 954 (1953)", "C. M. Penney, L. M. Goldman, and M. Lapp, Nature Phys. Sci. 235, 110 (1972)" ], "parameters": { "transition": "nu1 Q branch (2914 cm-1)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)" } } Table II \(p\. 3\), row 'CH4\(nu1\)', the other workers' columns \(row = the column\), 'adjusted to 488\.0 nm using an assumed frequency dependence of nu\_R^4' by Fenner et al\. fenner\_1973/ratio\_O2\_rayleigh ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_O2_rayleigh", "material": "O2", "table": "text", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "check", "parameters": { "transition": "v=0-1 Q branch (1556 cm-1)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)" } } 1 inline points in the source record. p\. 4\: the ratio to the N2 Q branch obtained from the measured Rayleigh\-to\-Raman ratio and the Rayleigh cross section computed from refractive indices \(refs\. 10\-11\)\: 'values 1\.1, 1\.5, 1\.0, and 1\.4 for molecules\: O2, Q\(1\) of H2, CO, and nu1 vibration of CO2'\. The direct value is 1\.3 \(Table II\)\. No uncertainty stated\. fenner\_1973/ratio\_H2\_Q1\_rayleigh ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_H2_Q1_rayleigh", "material": "H2", "table": "text", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "check", "parameters": { "transition": "v=0-1 Q(1)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)" } } 1 inline points in the source record. p\. 4\: the Q\(1\) ratio to the N2 Q branch obtained through the Rayleigh cross section \(see ratio\_O2\_rayleigh\)\. The direct value is 1\.6 \(Table II\)\. No uncertainty stated\. fenner\_1973/ratio\_CO\_rayleigh ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_CO_rayleigh", "material": "CO", "table": "text", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "check", "parameters": { "transition": "v=0-1 Q branch (2145 cm-1)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)" } } 1 inline points in the source record. p\. 4\: the CO ratio to the N2 Q branch obtained through the Rayleigh cross section \(see ratio\_O2\_rayleigh\)\. The direct value is 1\.0 \(Table II\)\. No uncertainty stated\. fenner\_1973/ratio\_CO2\_nu1\_rayleigh ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "ratio_CO2_nu1_rayleigh", "material": "CO2", "table": "text", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "check", "parameters": { "transition": "nu1 Q branch (1388 cm-1)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)" } } 1 inline points in the source record. p\. 4\: the CO2 nu1 ratio to the N2 Q branch obtained through the Rayleigh cross section \(see ratio\_O2\_rayleigh\)\. The direct value is 1\.4 \(Table II\)\. No uncertainty stated\. fenner\_1973/rotational\_N2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "rotational_N2", "material": "N2", "file": "N2/fenner_1973__rotational_N2.csv", "table": "tbl_81ab5bdc357b", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "primary", "parameters": { "transition": "pure rotational lines (per row: the strongest Stokes line, printed 0(J), or all Stokes and anti-Stokes lines)", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)", "geometry": "90 deg, both polarizations of the scattered light (the reference Q branch as in Table II)", "temperature_k": 295.15 } } Table III \(p\. 3\), 22 C\: the strongest Stokes pure rotational line \(printed '0\(6\)'\) and the sum of all Stokes and anti\-Stokes rotational lines, over the N2 Q branch of the same gas; 'the differential cross section for both polarizations at 90 deg'\. From the fit of Eq\. \(7\) to the measured lines \(see the record's notes\)\. No uncertainty stated\. fenner\_1973/vibrot\_N2 ~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "vibrot_N2", "material": "N2", "file": "N2/fenner_1973__vibrot_N2.csv", "table": "tbl_81ab5bdc357b", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "primary", "parameters": { "transition": "v=0-1 O and S branches, all lines", "reference_material": "N2", "reference_transition": "v=0-1 Q branch (2331 cm-1)", "geometry": "90 deg, both polarizations of the scattered light", "temperature_k": 295.15 } } Table III \(p\. 3\), row 'vib\-rot', 22 C\: 'the vibrational\-rotational cross section of all lines relative to the Q branch nu1 vibration' \(p\. 4\), i\.e\. the O and S branch lines of the v = 0\-1 band over its Q branch\. No uncertainty stated\. fenner\_1973/rotational\_O2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "rotational_O2", "material": "O2", "file": "O2/fenner_1973__rotational_O2.csv", "table": "tbl_81ab5bdc357b", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "primary", "parameters": { "transition": "pure rotational lines (per row: the strongest Stokes line, printed 0(J), or all Stokes and anti-Stokes lines)", "reference_material": "O2", "reference_transition": "v=0-1 Q branch (1556 cm-1)", "geometry": "90 deg, both polarizations of the scattered light", "temperature_k": 295.15 } } Table III \(p\. 3\), 22 C\: the strongest Stokes pure rotational line \(printed '0\(7\)', N = 7 by the caption's reading\) and the sum of all rotational lines, over the O2 Q branch\. No uncertainty stated\. fenner\_1973/vibrot\_O2 ~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "vibrot_O2", "material": "O2", "file": "O2/fenner_1973__vibrot_O2.csv", "table": "tbl_81ab5bdc357b", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "primary", "parameters": { "transition": "v=0-1 O and S branches, all lines", "reference_material": "O2", "reference_transition": "v=0-1 Q branch (1556 cm-1)", "geometry": "90 deg, both polarizations of the scattered light", "temperature_k": 295.15 } } Table III \(p\. 3\), row 'vib\-rot', 22 C\: the O and S branch lines of the O2 v = 0\-1 band over its Q branch \(p\. 4\)\. No uncertainty stated\. fenner\_1973/rotational\_H2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "rotational_H2", "material": "H2", "file": "H2/fenner_1973__rotational_H2.csv", "table": "tbl_81ab5bdc357b", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "primary", "parameters": { "transition": "pure rotational lines (per row: the strongest Stokes line, printed 0(J), or all Stokes and anti-Stokes lines)", "reference_material": "H2", "reference_transition": "v=0-1 Q(1)", "geometry": "90 deg, both polarizations of the scattered light", "temperature_k": 295.15 } } Table III \(p\. 3\), 22 C, normal H2\: the strongest Stokes rotational line \(printed '0\(1\)', the S\(1\) line J = 1 \-\> 3\) and the sum of all rotational lines, 'Referred to Q\(1\) vibrational line' \(note a\)\. No uncertainty stated\. fenner\_1973/rotational\_CO ~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "rotational_CO", "material": "CO", "file": "CO/fenner_1973__rotational_CO.csv", "table": "tbl_81ab5bdc357b", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "primary", "parameters": { "transition": "pure rotational lines (per row: the strongest Stokes line, printed 0(J), or all Stokes and anti-Stokes lines)", "reference_material": "CO", "reference_transition": "v=0-1 Q branch (2145 cm-1)", "geometry": "90 deg, both polarizations of the scattered light", "temperature_k": 295.15 } } Table III \(p\. 3\), 22 C\: the strongest Stokes rotational line \(printed '0\(6\)'\) and the sum of all rotational lines, over the CO Q branch\. No uncertainty stated\. fenner\_1973/rotational\_CO2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "rotational_CO2", "material": "CO2", "file": "CO2/fenner_1973__rotational_CO2.csv", "table": "tbl_81ab5bdc357b", "quantity": "raman_cross_section_ratio", "unit": "1", "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "primary", "parameters": { "transition": "pure rotational lines (per row: the strongest Stokes line, printed 0(J), or all Stokes and anti-Stokes lines)", "reference_material": "CO2", "reference_transition": "nu1 Q branch (1388 cm-1)", "geometry": "90 deg, both polarizations of the scattered light", "temperature_k": 295.15 } } Table III \(p\. 3\), 22 C\: the strongest Stokes rotational line \(printed '0\(16\)'\) and the sum of all rotational lines, 'Referred to nu1 vibrational line' \(note b\), the 1388 cm\-1 Q branch\. No uncertainty stated\. fenner\_1973/absolute\_N2 ~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "absolute_N2", "material": "N2", "file": "N2/fenner_1973__absolute_N2.csv", "table": "tbl_8d6a0ed08ffd", "quantity": "raman_cross_section", "unit": "cm2/sr", "scale": 1e-31, "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "primary", "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "transition": "v=0-1 Q branch (2331 cm-1)", "geometry": "90 deg, z(x,x)y (the parallel component), depolarization taken as zero" } } Table IV \(p\. 3\), 'This paper \- calibrated spectrometer', cm2/ster\-mol \(per molecule\)\: the N2 Q branch at 488\.0 nm, 'for orthogonal scattering geometry z\(x,x\)y and a depolarization ratio of zero' \(p\. 4\)\. The mean of six determinations \(average deviation \+\-5 %\); the printed \+\-1\.1 is the authors' '\+\-35%' estimate from 'the uncertainty of each of the eight independent parameters in Eq\. \(6\) and application of standard error analysis' \(p\. 4\), level not stated\. hyatt\_1973 \(same group\) gives 5\.4 \+\- 0\.3 at 488\.0 nm\. fenner\_1973/absolute\_N2\_benzene ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "absolute_N2_benzene", "material": "N2", "file": "N2/fenner_1973__absolute_N2_benzene.csv", "table": "tbl_8d6a0ed08ffd", "quantity": "raman_cross_section", "unit": "cm2/sr", "scale": 1e-31, "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "check", "parameters": { "transition": "v=0-1 Q branch (2331 cm-1)", "geometry": "90 deg, z(x,x)y (the parallel component), depolarization taken as zero" } } Table IV \(p\. 3\), 'This paper \- comparison with nu2 of C6H6', against the 992 cm\-1 line of liquid benzene taken as 3\.25 x 10^\-29 cm2/ster\-mol \(Kato and Takuma, ref\. 12\)\. 'Subject to more experimental uncertainty' than the calibrated\-spectrometer value \(p\. 4\); no uncertainty printed\. Kept as a check\: the authors prefer absolute\_N2\. fenner\_1973/absolute\_N2\_others ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "absolute_N2_others", "material": "N2", "file": "N2/fenner_1973__absolute_N2_others.csv", "table": "tbl_8d6a0ed08ffd", "quantity": "raman_cross_section", "unit": "cm2/sr", "scale": 1e-31, "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "reproduced", "reproduced_from": [ "C. M. Penney, L. M. Goldman, and M. Lapp, Nature Phys. Sci. 235, 110 (1972)", "D. G. Fouche and R. K. Chang, Appl. Phys. Letters 20, 256 (1972)", "murphy_1969", "E. J. Stansbury, M. F. Crawford, and H. L. Welch, Can. J. Phys. 31, 954 (1953)" ], "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "transition": "v=0-1 Q branch (2331 cm-1)" } } Table IV \(p\. 3\), the other authors' N2 Q\-branch cross sections, 'adjusted using a nu\_R^4 frequency dependence' to 488\.0 nm by Fenner et al\. \(rows by author; the footnotes b\-e give the references 5, 4, 2, 1\)\. The \+\- are as printed, level not stated\. Formulas -------- No formulas are recorded. Corrections ----------- No dataset errata are recorded in this source record. Formula corrections, where recorded, appear with their formulas above. Curation notes may also discuss corrections or unresolved interpretation. Consult the :doc:`review register ` for the checks and decisions.