matsui_2003#
T. Matsui, A. S.-C. Cheung, K. W.-S. Leung, K. Yoshino, W. H. Parkinson, A. P. Thorne, J. E. Murray, K. Ito and T. Imajo, “High resolution absorption cross-section measurements of the Schumann-Runge bands of O2 by VUV Fourier transform spectroscopy”, J. Mol. Spectrosc. 219, 45 (2003)
Source record · Catalogue · Review register
DOI: 10.1016/s0022-2852(03)00009-2
Source kind: measurement
Recorded technique: Vacuum-ultraviolet Fourier-transform spectroscopy (the Imperial College spectrometer) with synchrotron radiation (Photon Factory beam line 12B, predisperser 2.5 nm wide at 177.5 and 180.0 nm), resolution 0.06 or 0.12 cm^-1; a 7.82 cm cell of O2 at 2.00, 4.00 and 10.00 Torr, 295 K (column densities 0.51, 1.02 and 2.56e18 cm^-2), capacitance manometer; lines fitted with Voigt profiles (GREMLIN), about 650 lines of the (12,0)-(17,0) bands, 175-182.5 nm (pp. 45-47). Line intensities from the 2.00 Torr spectra only (saturation at 4 and 10 Torr, p. 54).
Materials in structured entries: O2
Dataset quantities: oscillator_strength
Contents: 6 datasets; 0 formulas.
Curation notes#
Journal pages 45-57 = PDF pages 1-13. O2 only, 295 K. Only the band values are taken (Table 5); the line lists (Tables 1a, 1b: positions; Table 2: term values; Tables 4a, 4b: integrated line cross sections with branch totals) and the molecular constants (Table 3) are not extracted.
Band oscillator strength (Eq. 1, p. 55): f(v’, v’’) = (m c^2 / (pi e^2)) (1 / N(v’’)) integral sigma(nu) dnu over all rotational lines of the band, N(v’’) the fractional Boltzmann population of the lower level, from the extended total cross-sections of the principal branches (extrapolated to N’’ = 41 with a Boltzmann distribution) and the observed totals of the satellite and forbidden branches. Table 5 also gives the total (observed) and extended integrated cross-sections in 10^-17 cm^2 cm^-1 (not extracted: no vocabulary quantity). Check (2026-09-25): the extended values times 1/(pi r_e) = 1.12958e12 cm^-1 give 2.372, 2.621, 2.700, 2.666, 2.395, 2.124e-5, the printed f to their rounding (N(0) = 1 to 0.1 % at 295 K).
Accuracy (p. 55): pressure (+-0.02 Torr), temperature (295 +- 2 K) and path (7.82 +- 0.01 cm) give ‘a random error of less than 2 %’; the noise is +-3e-20 cm^2 (3-4 % for the strong lines of 5-6e-19 cm^2 cm^-1, 10 % at 2.5e-19, 17 % at 1.0e-19); ‘total errors on the integrated cross-sections are estimated to be less than 5 %’. The band values are line-by-line integrals at a resolution comparable to the Doppler widths, free of the blending of neighbouring bands that the authors think inflated the earlier low-resolution values (p. 56). The abstract’s f values (2.38, 2.62, 2.70, 2.66, 2.40, 2.12e-5) are Table 5’s.
The five comparison columns are reproduced: LBC (Lewis et al. 1986, 1.4 cm^-1 resolution without pressure broadening, ‘near the present results, but still a little larger’), YFEP (Yoshino et al. 1983, 0.40 cm^-1, (12,0) only, agreeing), GGMBL (Gies et al. 1981), HCMK (Huebner et al. 1975, electron energy loss, ‘much smaller’ than theirs) and Bethke (1959, bethke_1959). The Bethke column copies bethke_1959’s Table I except (17,0), printed 2.95 for Bethke’s 2.94 (erratum). This work is 15-28 % below Bethke ((12,0) -15 %, (17,0) -28 %).
Band positions: the rows are indexed by v’. The band origins T(v) of Table 3 (cm^-1, relative to the hypothetical F2 N = J = 0 level of X(0); calibration uncertainty 0.03 cm^-1) are 55783.011 (v’ = 12), 56083.695, 56338.380, 56548.168, 56716.53 and 56848.56 (v’ = 17), about 179.3-175.9 nm (tbl_60e4f321647c, image checked; not extracted).
Recorded bibliographic identity status: VALIDATED. This concerns identification of the source; it does not establish the scientific correctness of its contents.
Datasets#
matsui_2003/present#
{
"id": "present",
"material": "O2",
"file": "O2/matsui_2003__present.csv",
"table": "tbl_0c3259b06159",
"quantity": "oscillator_strength",
"scale": 1e-05,
"abscissa": "label",
"use": "primary",
"uncertainty": {
"relative": 0.05,
"level": "bound"
}
}
Table 5 ‘Present’: band oscillator strengths of the Schumann-Runge (v’, 0) bands, v’ = 12-17 (index v’), in 1e-5, at 295 K. Less than 5 % (stated as a bound on the integrated cross-sections).
matsui_2003/lbc#
{
"id": "lbc",
"material": "O2",
"file": "O2/matsui_2003__lbc.csv",
"table": "tbl_0c3259b06159",
"quantity": "oscillator_strength",
"scale": 1e-05,
"abscissa": "label",
"use": "reproduced",
"reproduced_from": [
"B. R. Lewis, L. Berzins, J. H. Carver, J. Quant. Spectrosc. Radiat. Transfer 36, 209 (1986)"
]
}
Table 5 ‘LBC’ (note c), v’ = 12-16 (none for 17), in 1e-5: Lewis et al.’s band oscillator strengths, reproduced.
matsui_2003/yfep#
{
"id": "yfep",
"material": "O2",
"file": "O2/matsui_2003__yfep.csv",
"table": "tbl_0c3259b06159",
"quantity": "oscillator_strength",
"scale": 1e-05,
"abscissa": "label",
"use": "reproduced",
"reproduced_from": [
"K. Yoshino, D. E. Freeman, J. R. Esmond, W. H. Parkinson, Planet. Space Sci. 31, 339 (1983)"
]
}
Table 5 ‘YFEP’ (note d), (12,0) only, in 1e-5: Yoshino et al.’s value from line-by-line cross sections at 0.40 cm^-1, reproduced. Merged with the LBC column in the library cells (structural fix in the script).
matsui_2003/ggmbl#
{
"id": "ggmbl",
"material": "O2",
"file": "O2/matsui_2003__ggmbl.csv",
"table": "tbl_0c3259b06159",
"quantity": "oscillator_strength",
"scale": 1e-05,
"abscissa": "label",
"use": "reproduced",
"reproduced_from": [
"H. P. Gies, S. T. Gibson, D. G. McCoy, A. J. Blake, B. R. Lewis, J. Quant. Spectrosc. Radiat. Transfer 26, 469 (1981)"
]
}
Table 5 ‘GGMBL’ (note e), v’ = 12-17, in 1e-5: Gies et al.’s band oscillator strengths, reproduced.
matsui_2003/hcmk#
{
"id": "hcmk",
"material": "O2",
"file": "O2/matsui_2003__hcmk.csv",
"table": "tbl_0c3259b06159",
"quantity": "oscillator_strength",
"scale": 1e-05,
"abscissa": "label",
"use": "reproduced",
"reproduced_from": [
"R. H. Huebner, R. J. Celotta, S. R. Mielczarek, C. E. Kuyatt, J. Chem. Phys. 63, 241 (1975)"
]
}
Table 5 ‘HCMK’ (note f), v’ = 12-17, in 1e-5: Huebner et al.’s electron-energy-loss band oscillator strengths, reproduced (the highest of the set).
matsui_2003/bethke#
{
"id": "bethke",
"material": "O2",
"file": "O2/matsui_2003__bethke.csv",
"table": "tbl_0c3259b06159",
"quantity": "oscillator_strength",
"scale": 1e-05,
"abscissa": "label",
"use": "reproduced",
"reproduced_from": [
"bethke_1959"
]
}
Table 5 ‘Bethke’ (note g), v’ = 12-17, in 1e-5: bethke_1959’s Table I, reproduced; (17,0) printed 2.95 for Bethke’s 2.94 (erratum).
Formulas#
No formulas are recorded.
Corrections#
[
{
"dataset": "bethke",
"row": "(17,0)",
"column": "value",
"printed": "2.95",
"corrected": "2.94",
"reason": "The reproduction of Bethke's (17,0) band oscillator strength reads 2.95e-5; Bethke's Table I prints 2.94e-5, and his K_0 = 699 cm^-2 atm^-1 with his Eq. (2), 4.203e-8 K_0, gives 2.938e-5. The other five reproduced values equal Bethke's.",
"evidence": "Table 5 image (tbl_0c3259b06159.jpg) prints 2.95; bethke_1959 Table I image (tbl_172bb90e7da2.jpg) prints 2.94; checked 2026-09-25."
}
]
Formula corrections, where recorded, appear with their formulas above. Curation notes may also discuss corrections or unresolved interpretation. Consult the review register for the checks and decisions.