abjean_1971#
R. Abjean, A. Mehu and A. Johannin-Gilles, “Interferometric determination of xenon and krypton refractive indices in the ultraviolet region”, Opt. Commun. 3, 45 (1971)
Source record · Catalogue · Review register
DOI: 10.1016/0030-4018(71)90211-2
Source kind: measurement
Recorded technique: Fabry-Perot interferometry at the lines 2537 A (Hg I), 2288 A (Cd I), 2139 A (Zn I), 1942 A (Hg II), 1849 A (Hg I) and 1807 A (S I), ‘according to an experimental technique previously used for nitrogen, argon, helium and neon’ (p. 45, refs. 5, 6: the Comptes Rendus papers of 1970, not in the library). Air Liquide krypton N 35 and xenon N 35 (impurities stated p. 45); each value the average of about twenty measurements.
Materials in structured entries: Kr, Xe
Dataset quantities: refractivity
Contents: 16 datasets; 2 formulas.
Curation notes#
State (p. 45): ‘The index n is given at the standard conditions (0 degrees and 760 mm)’; how the reduction was made is not stated (density unknown). The same laboratory’s later papers reduce with van der Waals relations (bideau_mehu_1976, bideau_mehu_1981).
Uncertainty (p. 45): ‘The experimental error essentially originates in the appreciation of the fractional part of the fringes, the other errors being unimportant compared to the latter (< 1/20). Each of the values given is the average of about twenty measurements. The statistical standard deviation for krypton is about 3 x 10^-6 for the wavelength 1807 A and 1.5 x 10^-6 for 2537 A. Likewise, for xenon it varies by about 2 to 6 x 10^-6 for the various wavelengths.’ The datasets take the largest stated value as one standard deviation for every row (whether it is the scatter of single measurements or of the mean is not said).
Wavelengths: the rows are the lines’ labels to 1 A; the paper does not say whether they are vacuum or air wavelengths. The calculated columns of Tables 1 and 2 are reproduced best at the lines’ vacuum wavelengths (the formulas at the rounded labels give 856.82 and 1029.80 against the printed 856.7 and 1029.4 at 2288 and 1849 A; at 2288.7 and 1849.5 A, vacuum wavelengths of the Cd I and Hg I lines quoted from memory, not from a library source, they give 856.7 and 1029.4): vacuum. The difference is below 0.4e-6, a tenth of the stated scatter.
KRYPTON WITHDRAWN: the krypton values are about 4 % above every other measurement and calculation (Table 4, p. 46; the paper attributes the difference to gas purity, p. 47). The authors withdrew them in bideau_mehu_1976 (p. 3: ‘we may conclude that our previous values were incorrect’; a xenon contamination of 4.3 % would explain them) and replaced them by new measurements. Every krypton dataset of this paper is excluded.
Tables 3 and 4 compare the paper’s formula values at round wavelengths with Kronjager (ref. 1, Z. Physik 98, 17 (1935)), Koch (ref. 2, Kgl. Fysiograf. Sallskap. Lund. Forh. 19, 15 (1949)), Chashchina and Shreider (ref. 3, Opt. Spectry 27, 161 (1969)), Kingston (ref. 9, kingston_1964) and Langhoff and Karplus (ref. 10, langhoff_1969). Only the cells marked ‘a) Experimental values’ of refs. 1-3 are extracted; the others are extrapolations of those authors’ formulas. The Kingston columns agree with kingston_1964’s Tables (xenon 872.4 ... 1059.5, krypton 495.4 ... 551.4); the Langhoff-Karplus krypton column agrees with langhoff_1969 (492.4 ... 547.2), but its xenon column (868.3 ... 1021.7) does not: langhoff_1969’s Table III gives 879.5 at 2200 A and 1105.8 at 1800 A (TC-166).
Reproductions elsewhere: bideau_mehu_1981’s experiment_Xe rows 253.7-180.7 nm are Table 1’s measured column (812.7 ... 1063.0) under nm labels; tang_1974’s abjean_1971_Xe (Table VI, 2200-1800 A) is Table 3’s formula column; bideau_mehu_1976’s ‘Abjean et al. (old values)’ krypton column.
Recorded bibliographic identity status: VALIDATED_WITH_WARNINGS. This concerns identification of the source; it does not establish the scientific correctness of its contents.
Datasets#
abjean_1971/experiment_Xe#
{
"id": "experiment_Xe",
"material": "Xe",
"file": "Xe/abjean_1971__experiment_Xe.csv",
"table": "tbl_84f9d5968312",
"quantity": "refractivity",
"scale": 1e-06,
"abscissa_unit": "angstrom",
"wavelength_medium": "vacuum",
"state": "1atm_0C",
"density": "unknown",
"use": "primary",
"uncertainty": {
"absolute": 6.0,
"level": "1 sigma"
}
}
Table 1, ‘meas.’: the original of bideau_mehu_1981/experiment_Xe at 253.7-180.7 nm.
abjean_1971/fit_Xe#
{
"id": "fit_Xe",
"material": "Xe",
"file": "Xe/abjean_1971__fit_Xe.csv",
"table": "tbl_84f9d5968312",
"quantity": "refractivity",
"scale": 1e-06,
"abscissa_unit": "angstrom",
"wavelength_medium": "vacuum",
"state": "1atm_0C",
"density": "unknown",
"use": "check"
}
Table 1, ‘calc.’: the paper’s xenon formula at the measured lines.
abjean_1971/formula_table_Xe#
{
"id": "formula_table_Xe",
"material": "Xe",
"file": "Xe/abjean_1971__formula_table_Xe.csv",
"table": "tbl_30db947f05b2",
"quantity": "refractivity",
"scale": 1e-06,
"abscissa_unit": "angstrom",
"wavelength_medium": "vacuum",
"state": "1atm_0C",
"density": "unknown",
"use": "check"
}
Table 3, ‘present work’, 2500-1800 A: the paper’s xenon formula at round wavelengths (the corrected formula reproduces every cell to 0.05e-6), not measurements. The heading prints ‘(n-1) . 10^3’ (image checked): a misprint for 10^6, as Table 1’s note for the same gas and the agreement with the formula show; scale 1e-6. tang_1974/abjean_1971_Xe reproduces this column (2200-1800 A).
abjean_1971/kronjager_1935_Xe#
{
"id": "kronjager_1935_Xe",
"material": "Xe",
"file": "Xe/abjean_1971__kronjager_1935_Xe.csv",
"table": "tbl_30db947f05b2",
"quantity": "refractivity",
"scale": 1e-06,
"abscissa_unit": "angstrom",
"wavelength_medium": "vacuum",
"state": "1atm_0C",
"density": "unknown",
"use": "reproduced",
"reproduced_from": [
"W. Kronjager, Z. Physik 98, 17 (1935)"
]
}
Table 3, ref. 1, cells marked a) (experimental) only: 2500-2200 A.
abjean_1971/koch_1949_Xe#
{
"id": "koch_1949_Xe",
"material": "Xe",
"file": "Xe/abjean_1971__koch_1949_Xe.csv",
"table": "tbl_30db947f05b2",
"quantity": "refractivity",
"scale": 1e-06,
"abscissa_unit": "angstrom",
"wavelength_medium": "vacuum",
"state": "1atm_0C",
"density": "unknown",
"use": "reproduced",
"reproduced_from": [
"J. Koch, Kgl. Fysiograf. Sallskap. Lund. Forh. 19, 15 (1949)"
]
}
Table 3, ref. 2, cells marked a) only: 2500-2300 A.
abjean_1971/chashchina_shreider_1969_Xe#
{
"id": "chashchina_shreider_1969_Xe",
"material": "Xe",
"file": "Xe/abjean_1971__chashchina_shreider_1969_Xe.csv",
"table": "tbl_30db947f05b2",
"quantity": "refractivity",
"scale": 1e-06,
"abscissa_unit": "angstrom",
"wavelength_medium": "vacuum",
"state": "1atm_0C",
"density": "unknown",
"use": "reproduced",
"reproduced_from": [
"G. I. Chashchina and E. Ya. Shreider, Opt. Spectry 27, 161 (1969)"
]
}
Table 3, ref. 3, cells marked a) only: 2200-1800 A (line-shift values standardised to Koch’s).
abjean_1971/kingston_1964_Xe#
{
"id": "kingston_1964_Xe",
"material": "Xe",
"file": "Xe/abjean_1971__kingston_1964_Xe.csv",
"table": "tbl_30db947f05b2",
"quantity": "refractivity",
"scale": 1e-06,
"abscissa_unit": "angstrom",
"wavelength_medium": "vacuum",
"state": "1atm_0C",
"density": "unknown",
"use": "reproduced",
"reproduced_from": [
"kingston_1964"
]
}
Table 3, ref. 9: agrees with kingston_1964/theory_Xe.
abjean_1971/langhoff_karplus_1969_Xe#
{
"id": "langhoff_karplus_1969_Xe",
"material": "Xe",
"file": "Xe/abjean_1971__langhoff_karplus_1969_Xe.csv",
"table": "tbl_30db947f05b2",
"quantity": "refractivity",
"scale": 1e-06,
"abscissa_unit": "angstrom",
"wavelength_medium": "vacuum",
"state": "1atm_0C",
"density": "unknown",
"use": "reproduced",
"reproduced_from": [
"langhoff_1969"
]
}
Table 3, ref. 10: does NOT agree with langhoff_1969/theory_Xe (868.3 against 879.5 at 2200 A, 1021.7 against 1105.8 at 1800 A); which Langhoff-Karplus values these are is not said.
abjean_1971/experiment_Kr#
{
"id": "experiment_Kr",
"material": "Kr",
"file": "Kr/abjean_1971__experiment_Kr.csv",
"table": "tbl_00feebf8a634",
"quantity": "refractivity",
"scale": 1e-06,
"abscissa_unit": "angstrom",
"wavelength_medium": "vacuum",
"state": "1atm_0C",
"density": "unknown",
"use": "excluded",
"uncertainty": {
"absolute": 3.0,
"level": "1 sigma"
}
}
Table 2, ‘meas.’. Withdrawn by the authors (bideau_mehu_1976, p. 188): about 4 % high, probably a xenon-contaminated sample; superseded by bideau_mehu_1976/experiment_Kr.
abjean_1971/fit_Kr#
{
"id": "fit_Kr",
"material": "Kr",
"file": "Kr/abjean_1971__fit_Kr.csv",
"table": "tbl_00feebf8a634",
"quantity": "refractivity",
"scale": 1e-06,
"abscissa_unit": "angstrom",
"wavelength_medium": "vacuum",
"state": "1atm_0C",
"density": "unknown",
"use": "excluded"
}
Table 2, ‘calc.’: the paper’s krypton formula, fitted to the withdrawn data.
abjean_1971/formula_table_Kr#
{
"id": "formula_table_Kr",
"material": "Kr",
"file": "Kr/abjean_1971__formula_table_Kr.csv",
"table": "tbl_9e525b4dedbd",
"quantity": "refractivity",
"scale": 1e-06,
"abscissa_unit": "angstrom",
"wavelength_medium": "vacuum",
"state": "1atm_0C",
"density": "unknown",
"use": "excluded"
}
Table 4, ‘present work’: the krypton formula at round wavelengths (reproduced to 0.05e-6), resting on the withdrawn data. The library leaves Table 4 uncaptioned; the image prints ‘Table 4’.
abjean_1971/kronjager_1935_Kr#
{
"id": "kronjager_1935_Kr",
"material": "Kr",
"file": "Kr/abjean_1971__kronjager_1935_Kr.csv",
"table": "tbl_9e525b4dedbd",
"quantity": "refractivity",
"scale": 1e-06,
"abscissa_unit": "angstrom",
"wavelength_medium": "vacuum",
"state": "1atm_0C",
"density": "unknown",
"use": "reproduced",
"reproduced_from": [
"W. Kronjager, Z. Physik 98, 17 (1935)"
]
}
Table 4, ref. 1, cells marked a) only: 2500-2100 A.
abjean_1971/koch_1949_Kr#
{
"id": "koch_1949_Kr",
"material": "Kr",
"file": "Kr/abjean_1971__koch_1949_Kr.csv",
"table": "tbl_9e525b4dedbd",
"quantity": "refractivity",
"scale": 1e-06,
"abscissa_unit": "angstrom",
"wavelength_medium": "vacuum",
"state": "1atm_0C",
"density": "unknown",
"use": "reproduced",
"reproduced_from": [
"J. Koch, Kgl. Fysiograf. Sallskap. Lund. Forh. 19, 15 (1949)"
]
}
Table 4, ref. 2, cells marked a) only: 2500 and 2400 A.
abjean_1971/chashchina_shreider_1969_Kr#
{
"id": "chashchina_shreider_1969_Kr",
"material": "Kr",
"file": "Kr/abjean_1971__chashchina_shreider_1969_Kr.csv",
"table": "tbl_9e525b4dedbd",
"quantity": "refractivity",
"scale": 1e-06,
"abscissa_unit": "angstrom",
"wavelength_medium": "vacuum",
"state": "1atm_0C",
"density": "unknown",
"use": "reproduced",
"reproduced_from": [
"G. I. Chashchina and E. Ya. Shreider, Opt. Spectry 27, 161 (1969)"
]
}
Table 4, ref. 3, cells marked a) only: 2300-1800 A.
abjean_1971/kingston_1964_Kr#
{
"id": "kingston_1964_Kr",
"material": "Kr",
"file": "Kr/abjean_1971__kingston_1964_Kr.csv",
"table": "tbl_9e525b4dedbd",
"quantity": "refractivity",
"scale": 1e-06,
"abscissa_unit": "angstrom",
"wavelength_medium": "vacuum",
"state": "1atm_0C",
"density": "unknown",
"use": "reproduced",
"reproduced_from": [
"kingston_1964"
]
}
Table 4, ref. 9: agrees with kingston_1964/theory_Kr.
abjean_1971/langhoff_karplus_1969_Kr#
{
"id": "langhoff_karplus_1969_Kr",
"material": "Kr",
"file": "Kr/abjean_1971__langhoff_karplus_1969_Kr.csv",
"table": "tbl_9e525b4dedbd",
"quantity": "refractivity",
"scale": 1e-06,
"abscissa_unit": "angstrom",
"wavelength_medium": "vacuum",
"state": "1atm_0C",
"density": "unknown",
"use": "reproduced",
"reproduced_from": [
"langhoff_1969"
]
}
Table 4, ref. 10: agrees with langhoff_1969/theory_Kr at 2200-1800 A.
Formulas#
abjean_1971/sellmeier_Xe#
{
"id": "sellmeier_Xe",
"material": "Xe",
"equation": "unnumbered, p. 46",
"printed": "n - 1 = 1.2055 x 10^-6 (-25.60/(46.301 - lambda^-2) + 23.80/(59.578 - lambda^-2) + 522.3468/(112.74023 - lambda^-2))",
"variable": "lambda: vacuum wavelength in um",
"form": "dn_sigma2",
"terms": {
"scale": "1.2055e-6",
"B": [
"-25.60",
"23.80",
"522.3468"
],
"C": [
"46.301",
"59.578",
"112.74023"
]
},
"state": "1atm_0C",
"density": "unknown",
"range_nm": [
180.7,
253.7
],
"check": "With both corrections, reproduces Table 1's calc. column to 0.4e-6 at the rounded line labels (813.26, 856.82, 895.16, 973.04, 1029.80, 1062.81 against 813.2, 856.7, 895.1, 972.9, 1029.4, 1062.5; closer at the lines' vacuum wavelengths, see the source notes) and Table 3's 'present work' column to 0.05e-6 at all eight round wavelengths. Checked 2026-09-25.",
"corrections": [
{
"term": "scale",
"index": 0,
"printed": "1.2055e-6",
"corrected": "1.2055e-4",
"reason": "The numerators are 100 f (krypton's are the text's f = 0.187, 0.193 times 100), so the prefactor of the Bideau-Mehu form, 1.2055e-2 per unit f, becomes 1.2055e-4; as printed the formula gives n - 1 = 8.1e-6, a hundred times the measured values.",
"evidence": "With 1.2055e-4 (and B1 = +25.60) the formula gives 813.26e-6 at 2537 A against Table 1's calc. 813.2 and all eight of Table 3's 'present work' cells to 0.05e-6 (818.59 ... 1068.91 against 818.6 ... 1068.9). Checked 2026-09-25."
},
{
"term": "B",
"index": 0,
"printed": "-25.60",
"corrected": "25.60",
"reason": "The equation image (equations/eq_af918dee2bd1.jpg) shows a dash before the first fraction, which the library reads as a minus sign; a negative strength of the 146.9 nm resonance line is unphysical, and with it the formula gives 613e-6 at 2537 A against 813.2 in Table 1.",
"evidence": "With +25.60 the formula reproduces Tables 1 and 3 (see check); with -25.60 it is 200e-6 low everywhere. Checked 2026-09-25."
}
]
}
The first two terms carry Anderson’s oscillator strengths of the 1469 A and 1295 A resonance lines, as adopted by Chashchina and Shreider (p. 46); the third is fitted to the paper’s own data. The range is the measured one.
abjean_1971/sellmeier_Kr#
{
"id": "sellmeier_Kr",
"material": "Kr",
"equation": "unnumbered, p. 46",
"printed": "n - 1 = 1.2055 x 10^-6 (18.7/(65.474 - lambda^-2) + 19.3/(73.645 - lambda^-2) + 500.0255/(163.9919 - lambda^-2))",
"variable": "lambda: vacuum wavelength in um",
"form": "dn_sigma2",
"terms": {
"scale": "1.2055e-6",
"B": [
"18.7",
"19.3",
"500.0255"
],
"C": [
"65.474",
"73.645",
"163.9919"
]
},
"state": "1atm_0C",
"density": "unknown",
"range_nm": [
180.7,
253.7
],
"check": "With the prefactor corrected, reproduces Table 2's calc. column to 0.1e-6 (491.22, 507.30, 520.70, 545.69, 562.00, 570.74 against 491.2, 507.2, 520.6, 545.6, 561.9, 570.7 after the 1807 A erratum) and Table 4's 'present work' column to 0.05e-6. Checked 2026-09-25.",
"corrections": [
{
"term": "scale",
"index": 0,
"printed": "1.2055e-6",
"corrected": "1.2055e-4",
"reason": "The numerators are 100 f (the text's f = 0.187 and 0.193 are printed 18.7 and 19.3), so the prefactor is 1.2055e-4, not 1.2055e-6; as printed the formula gives 4.9e-6, a hundredth of the tabulated values.",
"evidence": "With 1.2055e-4 the formula gives 491.22e-6 at 2537 A against Table 2's calc. 491.2, and all of Table 4's 'present work' cells to 0.05e-6. Checked 2026-09-25."
}
]
}
FITTED TO THE WITHDRAWN KRYPTON DATA (bideau_mehu_1976): about 4 % high; kept for the record, not for use. The first two terms carry Griffin and Hutcherson’s oscillator strengths, 0.187 and 0.193, of the 1236 A and 1165 A resonance lines (p. 46).
Corrections#
[
{
"dataset": "fit_Kr",
"row": "1807",
"column": "value",
"printed": "507.7",
"corrected": "570.7",
"reason": "Transposed digits: the row's own difference column prints meas. - calc. = 0.0 with meas. = 570.7, and the krypton formula gives 570.74 at 1807 A (570.68 at 1807.3 A).",
"evidence": "Table image tbl_00feebf8a634.jpg shows 507.7 in the calc. column and 0.0 in the difference column; formula evaluated 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.