dunmur_1979b ============ D\. A\. Dunmur, D\. C\. Hunt and N\. E\. Jessup, "The influence of intermolecular interactions on the Kerr effect in gases\. II\. Experimental results for spherical top molecules", Mol\. Phys\. 37, 713 \(1979\) `Source record `__ · :doc:`Catalogue ` · :doc:`Review register ` DOI: `10\.1080/00268977900103141 `__ **Source kind:** measurement **Recorded technique:** Electric\-field\-induced birefringence by a modulation technique \(Buckingham and Dunmur 1968; Boyle et al\. 1966\) at 633 or 458 nm, relative to a fluorobenzene Kerr cell calibrated by the Senarmont method\. 2\-100 bar\: a stainless\-steel cell with parallel electrodes 205 mm long, 4\.9 mm apart, in a thermostatted tank \(Budenberg test gauge\); below 2 bar\: a pyrex cell with 2\.965 m nickel\-plated electrodes 4\.98 mm apart \(20\-40 degrees C only, mercury manometer\)\. \(n\_par \- n\_perp\)/E^2 extrapolated to zero field at each temperature and pressure; molar volumes from Dymond and Smith's virial coefficients; the Kerr virial coefficients from a least\-squares fit of Eq\. \(2\) in V\_m^\-1 and T \(Eqs\. 6\-8\)\. Gases\: Ar 99\.9997 %, Kr 99\.97 %, Xe 99\.997 % \(British Oxygen\), CH4 99\.98 % \(Matheson\), CF4 \> 99\.7 %, SF6 \> 98 % \(ICI\), neopentane 99\.99 % \(pp\. 714\-716\)\. **Materials in structured entries:** Ar, CH4, Kr, SF6, Xe **Dataset quantities:** hyperpolarizability, kerr\_virial\_coefficient, molar\_kerr\_constant **Contents:** 32 datasets; 0 formulas. Curation notes -------------- Part II of Dunmur and Jessup; Part I \(the statistical theory, Mol\. Phys\. 37, 697\) is dunmur\_1979, whose Table 2 and Table 4 'expt \[19\]' rows reprint this paper \(to be re\-pointed; checked below\)\. Identity checked against the first page \(Mol\. Phys\. 37, 713\-724 \(1979\), received 12 May 1978\)\. Page numbers are the journal's\: pdf page 1 is the publisher's cover, so p\. = pdf page \+ 711\. Scope\: Ar, Kr, Xe, CH4 and SF6; CF4 \(Table 7\) and 2,2\-dimethylpropane \(neopentane, Table 6\) are not curated species \(values in notes\)\. DEFINITIONS \(pp\. 715\-716, 719\)\. mK = lim\_\(E \-\> 0\) 6 n \(n\_par \- n\_perp\) V\_m/\[\(n^2 \+ 2\)^2 \(eps \+ 2\)^2 E^2\] \(Eq\. 1\) = A\_K \+ B\_K V\_m^\-1 \+ C\_K V\_m^\-2 \+ \.\.\. \(Eq\. 3\); the data \[\(n\_par \- n\_perp\)/E^2\]\_\(E=0\) = a0 V\_m^\-1 \+ \(b0 \+ b1/T \+ b2/T^2\) V\_m^\-2 \+ c0 V\_m^\-3 \(Eq\. 2, the temperature dependence empirical; c0 omitted for the rare gases, where it worsened the fit\), so A\_K = 2 a0/27 \(Eq\. 6\), B\_K = \(2/27\)\[b0 \+ b1/T \+ b2/T^2 \- a0 \(2 A\_eps \+ A\_r/2\)\] \(Eq\. 7\), C\_K Eq\. \(8\), with Part I's polarizabilities \(Eq\. 9\)\. A\_K = N\_A gamma\-bar/\(81 eps0\), gamma\-bar = \(1/10\)\[3 gamma\_abab\(\-w; w, 0, 0\) \- gamma\_aabb\(\-w; w, 0, 0\)\] \(Eq\. 10, p\. 719\)\: the dc Kerr gamma^K in the Taylor\-series \(T\) convention \(as buckingham\_1969's A\_K = N gamma/81 eps0\); checked, 81 eps0 A\_K/N\_A reproduces Table 8 from Tables 1\-5 \(7\.38, 19\.17, 19\.17, 11\.91; Xe 48\.8 from the printed A\_K = 41 against Table 8's 49\.2\)\. A\_K is temperature independent for atoms and spherical tops without a vibrational contribution \(neopentane's Kerr constant constant to \+\-0\.5 % over 20\-40 degrees C at fixed low density, p\. 715\)\. S\.I\. units as printed\: A\_K in C^2 m^5 J^\-2 per mole, B\_K in C^2 m^8 J^\-2, C\_K in C^2 m^11 J^\-2, gamma in C^4 m^4 J^\-3\. The density ranges of Tables 1\-7 are printed as '10^\-2 V\_m^\-1/m^\-3' \(i\.e\. V\_m^\-1 in units of 10^2 mol m^\-3\); not extracted\. WAVELENGTHS\: 458 nm for Ar, Kr, Xe and CH4 \(Tables 1\-3, 5\), 633 nm for SF6 \(Table 4\) except its 297 K low\-density row, which is marked 'Measured at a wavelength of 458 nm'\: so SF6's A\_K and hence its gamma \(Table 8\) are 458 nm values\. shelton\_1994's Table XII note aa says 'dc Kerr at 633 nm except CH4 at 458 nm' \(its table12\_SF6\_dc\_kerr row 'ref 22' is stored at 632\.8 nm\)\: for SF6 that is not what this paper prints\. The He\-Ne and argon\-ion laser lines, stored as standard\-air wavelengths \(not said\)\. UNCERTAINTY \(p\. 716\)\. 'In all our experiments the precision of the measurements exceeded their absolute accuracy, and the errors quoted for the first Kerr virial coefficients, except the low density result for tetrafluoromethane, represent calibration uncertainties'; the B\_K errors estimate the accuracy from the difference between the global fit and fits at each temperature\. Level not stated\. 'The close agreement around room temperature between our experimental results for B\_K and those calculated using equation \(15\) \.\.\. suggests that the accuracy of our results is in fact higher than that claimed' \(p\. 723\)\. C\_K are 'tentative' \(abstract\)\. TABLE 8 LITERATURE \(p\. 720; reproduced datasets gamma\_\\_lit\_\, row = reference number\)\. dc Kerr\: \[3\] Buckingham and Dunmur 1968 \(buckingham\_1968\: its 0\.59\(4\), 1\.4\(1\), 3\.9\(3\), 1\.2\(1\) x 10^\-36 esu of Ar, Kr, Xe, SF6 x 1\.23799e\-25 = 7\.30\(50\), 17\.3\(12\), 48\.3\(37\), 14\.9\(12\) x 10^\-62\: all as printed here except Ar's error, 0\.6 where 0\.50 converts\), \[5\] Buckingham and Orr 1969 \(buckingham\_1969\: 0\.180\(9\) x 10^\-60 = 18\.0\(9\), as printed\); three\-wave mixing \('TWM', process other\)\: \[22\] Hauchecorne, Kerherve and Mayer 1971 \(with Kielich 1969\), \[23\] Rado 1967; ESHG\: \[24\] Finn and Ward 1971, \[25\] Ward and Bigio 1975, \[22\]; THG \(printed 'gamma\_TMG'\)\: \[26\] Ward and New 1969 \(ward\_1969\)\. The wavelengths of the literature values are not given here; the conversions to gamma\-bar in C^4 m^4 J^\-3 are this paper's\. 'The hyperpolarizabilities obtained from harmonic generation experiments for krypton, xenon and tetrafluoromethane differ from the Kerr effect values', attributed for Kr and Xe to dispersion \(p\. 719\)\. Out of scope\: CF4 7\.7 \+\- 0\.6 \(this work\), 9\.3 \+\- 0\.5 \[5\], ESHG 6\.8 \+\- 0\.2 \[25\]; neopentane 110 \+\- 6, n\-pentane 114 \+\- 36 \[21\]\. NOT EXTRACTED \(no quantity\)\: the ratios B\_K^expt/B\_K^DID of Tables 1\-7 and the Table 9 averages \(Ar 0\.65 \+\- 0\.11, Kr 0\.63 \+\- 0\.09, Xe 0\.67 \+\- 0\.12, CH4 1\.40 \+\- 0\.2, SF6 2\.5 \+\- 0\.4, CF4 1\.10 \+\- 0\.1, neopentane 3\.9 \+\- 0\.3, against Kerr and depolarized\-light\-scattering literature\); Table 10, the empirical pair\-anisotropy parameters x1/R0^3 \(Ar \-0\.34, Kr \-0\.37, Xe \-0\.32, CH4 0\.30, SF6 0\.95\) and x2/R0^3 \(rejected\), and alpha/\(4 pi eps0 R0^3\) \(Eq\. 13\); McTague et al\.'s argon parameters mu = 7\.2e29 m^\-3, lambda = 8e9 m^\-1 \(Eq\. 15\); Figs\. 1\-2\. CF4 \(Table 7, 633 nm; 296 K row at 458 nm\)\: A\_K 6\.5 \+\- 0\.4 \(6\.5 \+\- 1\.3 at low density\), B\_K 54\-39 x 10^\-33, C\_K \-200 \+\- 200 x 10^\-38 at 269\-332 K; neopentane \(Table 6, 633 nm; 300 K at 458 nm\)\: A\_K 93 \+\- 5, B\_K 4050\-3010 x 10^\-33, C\_K \-1700 \+\- 1000 x 10^\-36\. REPRODUCTIONS ELSEWHERE \(checked 2026\-09\-27; none of these records is from this extraction except shelton\_1994\)\: dunmur\_1979's table2\_expt\_\ \(B\_K\: Ar 3\.8 at 305 K, Kr 16 at 303, Xe 98 at 302, CH4 37 at 302, SF6 470 at 303\: all as in Tables 1\-5\) and table4\_expt\_CH4 \(\-450 x 10^\-38 at '300 K'\: Table 5's 302 and 312 K value\) and table4\_expt\_SF6 \(\-10000 x 10^\-38 = \-100 x 10^\-36, Table 4\); shelton\_1994's table12\_CH4\_dc\_kerr and table12\_SF6\_dc\_kerr rows 'ref 22' \(3079 \+\- 160 au = 19\.2\(10\) x 10^\-62/6\.23538e\-65, and 1908 \+\- 133 au = 11\.9 x 10^\-62, whose 0\.8 converts to 128, not 133; re\-pointed there\); hattig\_1998's expt\_dc\_kerr\_Ar row at 457\.9 nm, 1187 \+\- 96 au \(7\.39\(60\) x 10^\-62 converts to 1185\(96\); 1187 is 7\.40\)\. **Recorded bibliographic identity status:** VALIDATED\_WITH\_WARNINGS. This concerns identification of the source; it does not establish the scientific correctness of its contents. Datasets -------- dunmur\_1979b/A\_K\_Ar ~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "A_K_Ar", "material": "Ar", "file": "Ar/dunmur_1979b__A_K_Ar.csv", "table": "tbl_3848d596ace9", "quantity": "molar_kerr_constant", "unit": "C2 m5 J-2", "scale": 1e-29, "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "check", "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "temperature_range_k": "253-315" } } Table 1 \(p\. 717\), lambda = 458 nm\: the first Kerr virial coefficient A\_K \(the zero\-density molar Kerr constant\), the temperature\-independent coefficient a0 of the Eq\. \(2\) fit \(A\_K = 2 a0/27, Eq\. 6\) over the whole table, printed on every row and taken once \(row = the first temperature\)\. No low\-density measurement was possible for the rare gases \(breakdown\)\. The error is a calibration uncertainty \(p\. 716\); level not stated\. A\_K = N\_A gamma\-bar/\(81 eps0\)\: gamma\_Ar is this value converted\. dunmur\_1979b/B\_K\_Ar ~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "B_K_Ar", "material": "Ar", "file": "Ar/dunmur_1979b__B_K_Ar.csv", "table": "tbl_3848d596ace9", "quantity": "kerr_virial_coefficient", "unit": "C2 m8 J-2", "scale": 1e-33, "abscissa": "temperature", "abscissa_unit": "K", "use": "check", "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "order": 2, "wavelength_nm": 458 } } Table 1 \(p\. 717\), lambda = 458 nm\: the second Kerr virial coefficient B\_K against temperature, from the Eq\. \(2\) fit \(b0 \+ b1/T \+ b2/T^2, Eq\. 7\) with A\_eps and A\_r of Part I\. The error is estimated from the difference between the global fit and fits at each temperature separately \(p\. 716\); level not stated\. The B\_K^expt/B\_K^DID column \(0\.57\-0\.75 for the rare gases\) is not extracted\. dunmur\_1979b/A\_K\_Kr ~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "A_K_Kr", "material": "Kr", "file": "Kr/dunmur_1979b__A_K_Kr.csv", "table": "tbl_6fa5749b14cf", "quantity": "molar_kerr_constant", "unit": "C2 m5 J-2", "scale": 1e-29, "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "check", "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "temperature_range_k": "257-313" } } Table 2 \(p\. 717\), lambda = 458 nm\: the first Kerr virial coefficient A\_K \(the zero\-density molar Kerr constant\), the temperature\-independent coefficient a0 of the Eq\. \(2\) fit \(A\_K = 2 a0/27, Eq\. 6\) over the whole table, printed on every row and taken once \(row = the first temperature\)\. No low\-density measurement was possible for the rare gases \(breakdown\)\. The error is a calibration uncertainty \(p\. 716\); level not stated\. A\_K = N\_A gamma\-bar/\(81 eps0\)\: gamma\_Kr is this value converted\. dunmur\_1979b/B\_K\_Kr ~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "B_K_Kr", "material": "Kr", "file": "Kr/dunmur_1979b__B_K_Kr.csv", "table": "tbl_6fa5749b14cf", "quantity": "kerr_virial_coefficient", "unit": "C2 m8 J-2", "scale": 1e-33, "abscissa": "temperature", "abscissa_unit": "K", "use": "check", "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "order": 2, "wavelength_nm": 458 } } Table 2 \(p\. 717\), lambda = 458 nm\: the second Kerr virial coefficient B\_K against temperature, from the Eq\. \(2\) fit \(b0 \+ b1/T \+ b2/T^2, Eq\. 7\) with A\_eps and A\_r of Part I\. The error is estimated from the difference between the global fit and fits at each temperature separately \(p\. 716\); level not stated\. The B\_K^expt/B\_K^DID column \(0\.57\-0\.75 for the rare gases\) is not extracted\. dunmur\_1979b/A\_K\_Xe ~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "A_K_Xe", "material": "Xe", "file": "Xe/dunmur_1979b__A_K_Xe.csv", "table": "tbl_c76c4b08dfc1", "quantity": "molar_kerr_constant", "unit": "C2 m5 J-2", "scale": 1e-29, "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "check", "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "temperature_range_k": "256-313" } } Table 3 \(p\. 717\), lambda = 458 nm\: the first Kerr virial coefficient A\_K \(the zero\-density molar Kerr constant\), the temperature\-independent coefficient a0 of the Eq\. \(2\) fit \(A\_K = 2 a0/27, Eq\. 6\) over the whole table, printed on every row and taken once \(row = the first temperature\)\. No low\-density measurement was possible for the rare gases \(breakdown\)\. The error is a calibration uncertainty \(p\. 716\); level not stated\. A\_K = N\_A gamma\-bar/\(81 eps0\)\: gamma\_Xe is this value converted\. dunmur\_1979b/B\_K\_Xe ~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "B_K_Xe", "material": "Xe", "file": "Xe/dunmur_1979b__B_K_Xe.csv", "table": "tbl_c76c4b08dfc1", "quantity": "kerr_virial_coefficient", "unit": "C2 m8 J-2", "scale": 1e-33, "abscissa": "temperature", "abscissa_unit": "K", "use": "check", "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "order": 2, "wavelength_nm": 458 } } Table 3 \(p\. 717\), lambda = 458 nm\: the second Kerr virial coefficient B\_K against temperature, from the Eq\. \(2\) fit \(b0 \+ b1/T \+ b2/T^2, Eq\. 7\) with A\_eps and A\_r of Part I\. The error is estimated from the difference between the global fit and fits at each temperature separately \(p\. 716\); level not stated\. The B\_K^expt/B\_K^DID column \(0\.57\-0\.75 for the rare gases\) is not extracted\. dunmur\_1979b/A\_K\_SF6 ~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "A_K_SF6", "material": "SF6", "file": "SF6/dunmur_1979b__A_K_SF6.csv", "table": "tbl_08c025d2f30b", "quantity": "molar_kerr_constant", "unit": "C2 m5 J-2", "scale": 1e-29, "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "check", "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "temperature_k": 297 } } Table 4 \(p\. 718\), row 297 K \(dagger\: measured at 458 nm\), low densities 0\.21\-0\.42 x 10^2 mol m^\-3\: A\_K = 10 \+\- 0\.7 x 10^\-29 C^2 m^5 J^\-2, the value that fixes a0 in the higher\-pressure fits \(p\. 717\)\. The error is a calibration uncertainty; level not stated\. gamma\_SF6 is this value converted\. dunmur\_1979b/B\_K\_SF6 ~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "B_K_SF6", "material": "SF6", "file": "SF6/dunmur_1979b__B_K_SF6.csv", "table": "tbl_08c025d2f30b", "quantity": "kerr_virial_coefficient", "unit": "C2 m8 J-2", "scale": 1e-33, "abscissa": "temperature", "abscissa_unit": "K", "use": "check", "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "order": 2, "wavelength_nm": 633 } } Table 4 \(p\. 718\), lambda = 633 nm\: B\_K of SF6 at 253\-333 K from the Eq\. \(2\) fit with a0 fixed from the low\-density A\_K \(the 297 K 458 nm row is B\_K\_458\_SF6\)\. Error as for the rare gases; level not stated\. dunmur\_1979b/B\_K\_458\_SF6 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "B_K_458_SF6", "material": "SF6", "file": "SF6/dunmur_1979b__B_K_458_SF6.csv", "table": "tbl_08c025d2f30b", "quantity": "kerr_virial_coefficient", "unit": "C2 m8 J-2", "scale": 1e-33, "abscissa": "temperature", "abscissa_unit": "K", "use": "check", "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "order": 2, "wavelength_nm": 458 } } Table 4 \(p\. 718\), row 297 K \(dagger\: 458 nm, low densities 0\.21\-0\.42 x 10^2 mol m^\-3\)\: B\_K = 540 \+\- 110 x 10^\-33 C^2 m^8 J^\-2\. Level not stated\. dunmur\_1979b/C\_K\_SF6 ~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "C_K_SF6", "material": "SF6", "file": "SF6/dunmur_1979b__C_K_SF6.csv", "table": "tbl_08c025d2f30b", "quantity": "kerr_virial_coefficient", "unit": "C2 m11 J-2", "scale": 1e-36, "abscissa": "temperature", "abscissa_unit": "K", "use": "check", "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "order": 3, "wavelength_nm": 633 } } Table 4 \(p\. 718\), lambda = 633 nm\: the third Kerr virial coefficient C\_K of SF6, \-100 \+\- 60 x 10^\-36 C^2 m^11 J^\-2 at every temperature \(c0 of Eq\. 2 is taken temperature independent\: 'Our measurements were never precise enough to allow the determination of the temperature dependence of c0', p\. 715\); 'tentative' \(abstract\)\. Level not stated\. dunmur\_1979b/A\_K\_CH4 ~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "A_K_CH4", "material": "CH4", "file": "CH4/dunmur_1979b__A_K_CH4.csv", "table": "tbl_82697e3efe49", "quantity": "molar_kerr_constant", "unit": "C2 m5 J-2", "scale": 1e-29, "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "check", "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "temperature_k": 298 } } Table 5 \(p\. 718\), row 298 K, lambda = 458 nm, low densities 0\.28\-0\.64 x 10^2 mol m^\-3 \(the pyrex cell\)\: A\_K = 16\.1 \+\- 0\.8 x 10^\-29 C^2 m^5 J^\-2, the value that fixes a0 in the fits\. Calibration uncertainty; level not stated\. It and gamma\_CH4 \(19\.2 \+\- 1\.0\) coincide digit for digit with krypton's A\_K and gamma \(Tables 2 and 8\)\: not explained, and the paper gives no reason to doubt it; Buckingham and Orr's 632\.8 nm value is 18\.0 \+\- 0\.9 x 10^\-62 \(buckingham\_1969\)\. dunmur\_1979b/B\_K\_CH4 ~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "B_K_CH4", "material": "CH4", "file": "CH4/dunmur_1979b__B_K_CH4.csv", "table": "tbl_82697e3efe49", "quantity": "kerr_virial_coefficient", "unit": "C2 m8 J-2", "scale": 1e-33, "abscissa": "temperature", "abscissa_unit": "K", "use": "check", "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "order": 2, "wavelength_nm": 458 } } Table 5 \(p\. 718\), lambda = 458 nm\: B\_K of CH4 at 256\-312 K from the Eq\. \(2\) fit with a0 fixed from the low\-density A\_K\. Level not stated\. B\_K^expt/B\_K^DID = 1\.37\-1\.45 \(not extracted\)\. dunmur\_1979b/C\_K\_CH4 ~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "C_K_CH4", "material": "CH4", "file": "CH4/dunmur_1979b__C_K_CH4.csv", "table": "tbl_82697e3efe49", "quantity": "kerr_virial_coefficient", "unit": "C2 m11 J-2", "scale": 1e-38, "abscissa": "temperature", "abscissa_unit": "K", "use": "check", "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "order": 3, "wavelength_nm": 458 } } Table 5 \(p\. 718\), lambda = 458 nm\: C\_K of CH4 \(10^\-38 C^2 m^11 J^\-2, note the factor\: 10^36 for SF6\), \-470 to \-450 \+\- 330 to 320 at 256\-312 K \(c0 temperature independent; the variation comes from Eq\. 8's b terms\); 'tentative'\. C\_K^expt/C\_K^DID = 1\.47 and C\_K/B\_K = 11 x 10^\-5 m^3 \(pp\. 723\-724\)\. Level not stated\. dunmur\_1979b/gamma\_Ar ~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "gamma_Ar", "material": "Ar", "file": "Ar/dunmur_1979b__gamma_Ar.csv", "table": "tbl_623370bf3c99", "quantity": "hyperpolarizability", "unit": "SI", "scale": 1e-62, "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "check", "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "process": "dc_kerr", "convention": "T", "part": "electronic", "component": "K" } } Table 8 \(p\. 720\), this work\: 10^62 gamma\-bar/\(C^4 m^4 J^\-3\) of Ar from A\_K = N\_A gamma\-bar/\(81 eps0\) \(p\. 719\), gamma\-bar = \(1/10\)\[3 gamma\_abab\(\-w; w, 0, 0\) \- gamma\_aabb\(\-w; w, 0, 0\)\] \(Eq\. 10\)\: the dc Kerr gamma^K in the T convention \(as buckingham\_1969\), at the wavelength of the A\_K measurement, 458 nm\. Error as A\_K's \(calibration\); level not stated\. dunmur\_1979b/gamma\_Kr ~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "gamma_Kr", "material": "Kr", "file": "Kr/dunmur_1979b__gamma_Kr.csv", "table": "tbl_623370bf3c99", "quantity": "hyperpolarizability", "unit": "SI", "scale": 1e-62, "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "check", "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "process": "dc_kerr", "convention": "T", "part": "electronic", "component": "K" } } Table 8 \(p\. 720\), this work\: 10^62 gamma\-bar/\(C^4 m^4 J^\-3\) of Kr from A\_K = N\_A gamma\-bar/\(81 eps0\) \(p\. 719\), gamma\-bar = \(1/10\)\[3 gamma\_abab\(\-w; w, 0, 0\) \- gamma\_aabb\(\-w; w, 0, 0\)\] \(Eq\. 10\)\: the dc Kerr gamma^K in the T convention \(as buckingham\_1969\), at the wavelength of the A\_K measurement, 458 nm\. Error as A\_K's \(calibration\); level not stated\. dunmur\_1979b/gamma\_Xe ~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "gamma_Xe", "material": "Xe", "file": "Xe/dunmur_1979b__gamma_Xe.csv", "table": "tbl_623370bf3c99", "quantity": "hyperpolarizability", "unit": "SI", "scale": 1e-62, "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "check", "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "process": "dc_kerr", "convention": "T", "part": "electronic", "component": "K" } } Table 8 \(p\. 720\), this work\: 10^62 gamma\-bar/\(C^4 m^4 J^\-3\) of Xe from A\_K = N\_A gamma\-bar/\(81 eps0\) \(p\. 719\), gamma\-bar = \(1/10\)\[3 gamma\_abab\(\-w; w, 0, 0\) \- gamma\_aabb\(\-w; w, 0, 0\)\] \(Eq\. 10\)\: the dc Kerr gamma^K in the T convention \(as buckingham\_1969\), at the wavelength of the A\_K measurement, 458 nm\. Error as A\_K's \(calibration\); level not stated\. Converted from 41 \+\- 2 \(Table 3\) the value would be 48\.8\: the printed 49\.2 carries more digits of A\_K than Table 3 prints\. dunmur\_1979b/gamma\_CH4 ~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "gamma_CH4", "material": "CH4", "file": "CH4/dunmur_1979b__gamma_CH4.csv", "table": "tbl_623370bf3c99", "quantity": "hyperpolarizability", "unit": "SI", "scale": 1e-62, "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "check", "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "process": "dc_kerr", "convention": "T", "part": "total", "component": "K" } } Table 8 \(p\. 720\), this work\: 10^62 gamma\-bar/\(C^4 m^4 J^\-3\) of CH4 from A\_K = N\_A gamma\-bar/\(81 eps0\) \(p\. 719\), gamma\-bar = \(1/10\)\[3 gamma\_abab\(\-w; w, 0, 0\) \- gamma\_aabb\(\-w; w, 0, 0\)\] \(Eq\. 10\)\: the dc Kerr gamma^K in the T convention \(as buckingham\_1969\), at the wavelength of the A\_K measurement, 458 nm\. Error as A\_K's \(calibration\); level not stated\. dunmur\_1979b/gamma\_SF6 ~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "gamma_SF6", "material": "SF6", "file": "SF6/dunmur_1979b__gamma_SF6.csv", "table": "tbl_623370bf3c99", "quantity": "hyperpolarizability", "unit": "SI", "scale": 1e-62, "abscissa_unit": "nm", "wavelength_medium": "standard_air", "use": "check", "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "process": "dc_kerr", "convention": "T", "part": "total", "component": "K" } } Table 8 \(p\. 720\), this work\: 10^62 gamma\-bar/\(C^4 m^4 J^\-3\) of SF6 from A\_K = N\_A gamma\-bar/\(81 eps0\) \(p\. 719\), gamma\-bar = \(1/10\)\[3 gamma\_abab\(\-w; w, 0, 0\) \- gamma\_aabb\(\-w; w, 0, 0\)\] \(Eq\. 10\)\: the dc Kerr gamma^K in the T convention \(as buckingham\_1969\), at the wavelength of the A\_K measurement, 458 nm\. Error as A\_K's \(calibration\); level not stated\. dunmur\_1979b/gamma\_dc\_kerr\_lit\_Ar ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "gamma_dc_kerr_lit_Ar", "material": "Ar", "file": "Ar/dunmur_1979b__gamma_dc_kerr_lit_Ar.csv", "table": "tbl_623370bf3c99", "quantity": "hyperpolarizability", "unit": "SI", "scale": 1e-62, "abscissa_unit": "nm", "use": "reproduced", "reproduced_from": [ "buckingham_1968" ], "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "process": "dc_kerr", "convention": "T", "part": "electronic" } } Table 8 \(p\. 720\), dc Kerr \('Published values'\) of Ar as quoted and converted to 10^62 gamma/\(C^4 m^4 J^\-3\) by Dunmur et al\.; row = the reference number \(\[3\]\)\. Wavelength not given here \(not stated\)\. Level of the errors not stated\. dunmur\_1979b/gamma\_eshg\_lit\_Ar ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "gamma_eshg_lit_Ar", "material": "Ar", "file": "Ar/dunmur_1979b__gamma_eshg_lit_Ar.csv", "table": "tbl_623370bf3c99", "quantity": "hyperpolarizability", "unit": "SI", "scale": 1e-62, "abscissa_unit": "nm", "use": "reproduced", "reproduced_from": [ "R. S. Finn and J. F. Ward, Phys. Rev. Lett. 26, 285 (1971)" ], "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "process": "eshg", "convention": "T", "part": "electronic" } } Table 8 \(p\. 720\), ESHG \(printed 'gamma\_ESMG'\) of Ar as quoted and converted to 10^62 gamma/\(C^4 m^4 J^\-3\) by Dunmur et al\.; row = the reference number \(\[24\]\)\. Wavelength not given here \(not stated\)\. Level of the errors not stated\. dunmur\_1979b/gamma\_thg\_lit\_Ar ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "gamma_thg_lit_Ar", "material": "Ar", "file": "Ar/dunmur_1979b__gamma_thg_lit_Ar.csv", "table": "tbl_623370bf3c99", "quantity": "hyperpolarizability", "unit": "SI", "scale": 1e-62, "abscissa_unit": "nm", "use": "reproduced", "reproduced_from": [ "ward_1969" ], "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "process": "thg", "convention": "T", "part": "electronic" } } Table 8 \(p\. 720\), THG \(printed 'gamma\_TMG'\) of Ar as quoted and converted to 10^62 gamma/\(C^4 m^4 J^\-3\) by Dunmur et al\.; row = the reference number \(\[26\]\)\. Wavelength not given here \(not stated\)\. Level of the errors not stated\. dunmur\_1979b/gamma\_dc\_kerr\_lit\_Kr ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "gamma_dc_kerr_lit_Kr", "material": "Kr", "file": "Kr/dunmur_1979b__gamma_dc_kerr_lit_Kr.csv", "table": "tbl_623370bf3c99", "quantity": "hyperpolarizability", "unit": "SI", "scale": 1e-62, "abscissa_unit": "nm", "use": "reproduced", "reproduced_from": [ "buckingham_1968" ], "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "process": "dc_kerr", "convention": "T", "part": "electronic" } } Table 8 \(p\. 720\), dc Kerr \('Published values'\) of Kr as quoted and converted to 10^62 gamma/\(C^4 m^4 J^\-3\) by Dunmur et al\.; row = the reference number \(\[3\]\)\. Wavelength not given here \(not stated\)\. Level of the errors not stated\. dunmur\_1979b/gamma\_eshg\_lit\_Kr ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "gamma_eshg_lit_Kr", "material": "Kr", "file": "Kr/dunmur_1979b__gamma_eshg_lit_Kr.csv", "table": "tbl_623370bf3c99", "quantity": "hyperpolarizability", "unit": "SI", "scale": 1e-62, "abscissa_unit": "nm", "use": "reproduced", "reproduced_from": [ "R. S. Finn and J. F. Ward, Phys. Rev. Lett. 26, 285 (1971)" ], "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "process": "eshg", "convention": "T", "part": "electronic" } } Table 8 \(p\. 720\), ESHG \(printed 'gamma\_ESMG'\) of Kr as quoted and converted to 10^62 gamma/\(C^4 m^4 J^\-3\) by Dunmur et al\.; row = the reference number \(\[24\]\)\. Wavelength not given here \(not stated\)\. Level of the errors not stated\. dunmur\_1979b/gamma\_thg\_lit\_Kr ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "gamma_thg_lit_Kr", "material": "Kr", "file": "Kr/dunmur_1979b__gamma_thg_lit_Kr.csv", "table": "tbl_623370bf3c99", "quantity": "hyperpolarizability", "unit": "SI", "scale": 1e-62, "abscissa_unit": "nm", "use": "reproduced", "reproduced_from": [ "ward_1969" ], "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "process": "thg", "convention": "T", "part": "electronic" } } Table 8 \(p\. 720\), THG \(printed 'gamma\_TMG'\) of Kr as quoted and converted to 10^62 gamma/\(C^4 m^4 J^\-3\) by Dunmur et al\.; row = the reference number \(\[26\]\)\. Wavelength not given here \(not stated\)\. Level of the errors not stated\. dunmur\_1979b/gamma\_dc\_kerr\_lit\_Xe ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "gamma_dc_kerr_lit_Xe", "material": "Xe", "file": "Xe/dunmur_1979b__gamma_dc_kerr_lit_Xe.csv", "table": "tbl_623370bf3c99", "quantity": "hyperpolarizability", "unit": "SI", "scale": 1e-62, "abscissa_unit": "nm", "use": "reproduced", "reproduced_from": [ "buckingham_1968" ], "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "process": "dc_kerr", "convention": "T", "part": "electronic" } } Table 8 \(p\. 720\), dc Kerr \('Published values'\) of Xe as quoted and converted to 10^62 gamma/\(C^4 m^4 J^\-3\) by Dunmur et al\.; row = the reference number \(\[3\]\)\. Wavelength not given here \(not stated\)\. Level of the errors not stated\. dunmur\_1979b/gamma\_eshg\_lit\_Xe ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "gamma_eshg_lit_Xe", "material": "Xe", "file": "Xe/dunmur_1979b__gamma_eshg_lit_Xe.csv", "table": "tbl_623370bf3c99", "quantity": "hyperpolarizability", "unit": "SI", "scale": 1e-62, "abscissa_unit": "nm", "use": "reproduced", "reproduced_from": [ "R. S. Finn and J. F. Ward, Phys. Rev. Lett. 26, 285 (1971)" ], "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "process": "eshg", "convention": "T", "part": "electronic" } } Table 8 \(p\. 720\), ESHG \(printed 'gamma\_ESMG'\) of Xe as quoted and converted to 10^62 gamma/\(C^4 m^4 J^\-3\) by Dunmur et al\.; row = the reference number \(\[24\]\)\. Wavelength not given here \(not stated\)\. Level of the errors not stated\. dunmur\_1979b/gamma\_thg\_lit\_Xe ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "gamma_thg_lit_Xe", "material": "Xe", "file": "Xe/dunmur_1979b__gamma_thg_lit_Xe.csv", "table": "tbl_623370bf3c99", "quantity": "hyperpolarizability", "unit": "SI", "scale": 1e-62, "abscissa_unit": "nm", "use": "reproduced", "reproduced_from": [ "ward_1969" ], "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "process": "thg", "convention": "T", "part": "electronic" } } Table 8 \(p\. 720\), THG \(printed 'gamma\_TMG'\) of Xe as quoted and converted to 10^62 gamma/\(C^4 m^4 J^\-3\) by Dunmur et al\.; row = the reference number \(\[26\]\)\. Wavelength not given here \(not stated\)\. Level of the errors not stated\. dunmur\_1979b/gamma\_dc\_kerr\_lit\_CH4 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "gamma_dc_kerr_lit_CH4", "material": "CH4", "file": "CH4/dunmur_1979b__gamma_dc_kerr_lit_CH4.csv", "table": "tbl_623370bf3c99", "quantity": "hyperpolarizability", "unit": "SI", "scale": 1e-62, "abscissa_unit": "nm", "use": "reproduced", "reproduced_from": [ "buckingham_1969" ], "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "process": "dc_kerr", "convention": "T", "part": "total" } } Table 8 \(p\. 720\), dc Kerr \('Published values'\) of CH4 as quoted and converted to 10^62 gamma/\(C^4 m^4 J^\-3\) by Dunmur et al\.; row = the reference number \(\[5\]\)\. Wavelength not given here \(not stated\)\. Level of the errors not stated\. dunmur\_1979b/gamma\_twm\_lit\_CH4 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "gamma_twm_lit_CH4", "material": "CH4", "file": "CH4/dunmur_1979b__gamma_twm_lit_CH4.csv", "table": "tbl_623370bf3c99", "quantity": "hyperpolarizability", "unit": "SI", "scale": 1e-62, "abscissa_unit": "nm", "use": "reproduced", "reproduced_from": [ "G. Hauchecorne, F. Kerherve and G. Mayer, J. Phys. (Paris) 32, 47 (1971); S. Kielich, IEEE J. Quantum Electron. 5, 562 (1969)" ], "parameters": { "process": "other", "convention": "T", "part": "total" } } Table 8 \(p\. 720\), three\-wave mixing \(TWM\) of CH4 as quoted and converted to 10^62 gamma/\(C^4 m^4 J^\-3\) by Dunmur et al\.; row = the reference number \(\[22\]\)\. Wavelength not given here \(not stated\)\. Values printed without an error have none\. Level of the errors not stated\. dunmur\_1979b/gamma\_eshg\_lit\_CH4 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "gamma_eshg_lit_CH4", "material": "CH4", "file": "CH4/dunmur_1979b__gamma_eshg_lit_CH4.csv", "table": "tbl_623370bf3c99", "quantity": "hyperpolarizability", "unit": "SI", "scale": 1e-62, "abscissa_unit": "nm", "use": "reproduced", "reproduced_from": [ "J. F. Ward and I. J. Bigio, Phys. Rev. A 11, 60 (1975)", "G. Hauchecorne, F. Kerherve and G. Mayer, J. Phys. (Paris) 32, 47 (1971); S. Kielich, IEEE J. Quantum Electron. 5, 562 (1969)" ], "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "process": "eshg", "convention": "T", "part": "total" } } Table 8 \(p\. 720\), ESHG \(printed 'gamma\_ESMG'\) of CH4 as quoted and converted to 10^62 gamma/\(C^4 m^4 J^\-3\) by Dunmur et al\.; row = the reference number \(\[25\], \[22\]\)\. Wavelength not given here \(not stated\)\. Values printed without an error have none\. Level of the errors not stated\. dunmur\_1979b/gamma\_dc\_kerr\_lit\_SF6 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "gamma_dc_kerr_lit_SF6", "material": "SF6", "file": "SF6/dunmur_1979b__gamma_dc_kerr_lit_SF6.csv", "table": "tbl_623370bf3c99", "quantity": "hyperpolarizability", "unit": "SI", "scale": 1e-62, "abscissa_unit": "nm", "use": "reproduced", "reproduced_from": [ "buckingham_1968" ], "uncertainty": { "column": true, "level": "not stated" }, "parameters": { "process": "dc_kerr", "convention": "T", "part": "total" } } Table 8 \(p\. 720\), dc Kerr \('Published values'\) of SF6 as quoted and converted to 10^62 gamma/\(C^4 m^4 J^\-3\) by Dunmur et al\.; row = the reference number \(\[3\]\)\. Wavelength not given here \(not stated\)\. Level of the errors not stated\. dunmur\_1979b/gamma\_twm\_lit\_SF6 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ .. code-block:: text { "id": "gamma_twm_lit_SF6", "material": "SF6", "file": "SF6/dunmur_1979b__gamma_twm_lit_SF6.csv", "table": "tbl_623370bf3c99", "quantity": "hyperpolarizability", "unit": "SI", "scale": 1e-62, "abscissa_unit": "nm", "use": "reproduced", "reproduced_from": [ "G. Hauchecorne, F. Kerherve and G. Mayer, J. Phys. (Paris) 32, 47 (1971); S. Kielich, IEEE J. Quantum Electron. 5, 562 (1969)", "W. G. Rado, Appl. Phys. Lett. 11, 123 (1967)" ], "parameters": { "process": "other", "convention": "T", "part": "total" } } Table 8 \(p\. 720\), three\-wave mixing \(TWM\) of SF6 as quoted and converted to 10^62 gamma/\(C^4 m^4 J^\-3\) by Dunmur et al\.; row = the reference number \(\[22\], \[23\]\)\. Wavelength not given here \(not stated\)\. Values printed without an error have none\. Level of the errors 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.