schinkoth_2000

D. Schinköth, M. Kock and E. Schulz-Gulde, “Experimental Stark broadening parameters for near-infrared Ar I and Kr I lines”, J. Quant. Spectrosc. Radiat. Transfer 64, 635 (2000)

Source record · Catalogue · Review register

DOI: 10.1016/S0022-4073(99)00155-7

Source kind: measurement

Recorded technique: Plasma (Stark) broadening of 15 Ar I 4s-4p and 12 Kr I 5s-5p near-infrared lines in an atmospheric-pressure wall-stabilised arc (4 mm channel, 35-70 A) run in neon, argon or krypton with about 1:10 admixtures of the gas under study, kept optically thin; end-on emission through a 2 m Czerny-Turner monochromator (415 pm/mm, Gaussian instrument function 10 pm HWHM at 632.8 nm) and a CCD; electron density from the continuum emission (about 5 %), temperature from the Ar II 480.6 nm or Kr II 457.7 nm line (2 %), assuming LTE; Voigt (argon) or generalised asymmetric Stark profiles with Holtsmark ion microfields (krypton) fitted to the profiles (Secs. 2-4). With neon as carrier gas only relative widths (n_e T^(1/6) scaling).

Materials in structured entries: None recorded.

Dataset quantities: None recorded.

Contents: 0 datasets; 0 formulas.

Curation notes

Context only, no datasets. J. Quant. Spectrosc. Radiat. Transfer 64, 635-643 (2000), PDF pages 1-9 = journal pp. 635-643. Identity checked on the first page: journal, volume, pages, authors, title, received 28 September 1998, accepted 6 July 1999. The library’s identity is VALIDATED_WITH_WARNINGS.

WHAT THE PAPER PRINTS. Table 1 (p. 641, Ar I) and Table 2 (p. 642, Kr I): per line (Racah labels, air wavelength to 0.1 nm) the Stark constant C4 in 10^-22 m^4 s^-1 (this work, with Refs. 2-5 for argon and Ref. 1 for krypton, reproduced), the Lorentzian half width at half maximum Delta lambda_HWHM (pm) and the ion broadening parameter A, both ‘given for n_e = 10^22 m^-3 and T = 10^4 K’, with Griem’s calculated half widths and A (Refs. 17, 18) for argon. Uncertainty of C4 (probable): 10 % for argon (15 % for the values marked a, from the neon-carrier relative measurements), 12 % for krypton (19 % marked a); maximum errors 14 and 17 % (p. 639). Argon C4 1.03-1.63, HWHM 3.30-5.08 pm, A 0.042-0.047; krypton C4 1.18-2.04, HWHM 3.99-5.66 pm, A 0.043-0.049. The C4 here is the line’s quadratic Stark constant, set by the difference of the upper and lower levels’ polarisabilities; the widths are electron-impact widths in a plasma.

LEVEL LABELS. Every argon row’s label is NIST’s 3s2.3p5 4s or 4p level pair (data/external/nist_asd/Ar_I_lines_nir.tsv; unprimed = (2P*<3/2>), primed = (2P*<1/2>)), the air wavelength matching NIST’s vacuum one converted to air within 0.06 nm, except the last row: ‘4s[3/2]1-4p’[3/2]1 738.4’ is NIST’s 738.6014 nm (vac) 4s 2[3/2]* J = 1 - 4p’ 2[3/2] J = 2 (upper level 107 289.700 cm^-1); the 4s[3/2]1 - 4p’[3/2]1 line is near 747.1 nm (air). The upper J is misprinted 1 for 2 (no value is taken, so no erratum). Two argon rows are both ‘772.4’: 4s[3/2]2-4p[3/2]1 (NIST 772.5887 vac) and 4s’[1/2]0-4p’[1/2]1 (772.6333 vac). All 12 krypton labels match NIST’s Kr I lines (Kr_I_lines_nir.tsv) by wavelength and Racah label. Some odd-parity superscripts are missing on the page (e.g. 4s’[1/2]1 in two argon rows).

NOT TAKEN (no quantity fits; Data rule 7). pressure_line_coefficient (TC-1040) is collisional broadening or shift of a bound line by a perturber gas (‘self or a gas’), per unit pressure or density, in MHz/torr, MHz/mbar, GHz/amagat, cm-1/amagat or cm3/s. These widths are plasma Stark widths: the perturbers are free electrons (and ions, through A) at T = 10^4 K, the width is quoted at a reference electron density in pm, and the ion part is quasistatic, not impact. C4 is a line’s quadratic Stark constant, the difference of two levels’ polarisabilities (a line Stark coefficient; declined, TC-1011). No new quantity is proposed: a plasma electron-impact width is not an input of OEP 8, whose argon pressure broadening is by neutral argon.

CHECKED (2026-10-12). Table 1 and Table 2 cells against the page images (p. 641 is printed rotated; its footnote a and the n_e, T reference are on the page, not in the extracted table). Milosavljevic et al. (milosavljevic_2006, their ref. 9) quote this paper’s widths as FWHM at 10.0 x 10^3 K and 1 x 10^22 m^-3: 7.42, 7.42, 6.78, 6.6 and 7.06 pm and A 0.044, 0.044, 0.042, 0.044, 0.044 for 751.465, 763.511, 772.376, 706.722 and 738.398 nm, exactly twice the HWHM here (3.71, 3.71, 3.39, 3.30, 3.53) and the same A.

FINDING AGAINST werbowy_2026 (TC-1007). Werbowy’s Table 1 column ‘From the ion broadening A, Ref. [2]’ (this paper) lists the same 15 argon lines, single values or ranges in kHz/(kV/cm)^2. Each range spans this paper’s C4 ‘This work’ and the reproduced C4 of Refs. 2-5 in the same row, times about 127 (any factor from 125 to 130 reproduces 14 of the 15 entries to the printed 10; 772.376 nm, printed 170, gives 136 and 127). Werbowy states Delta alpha_0 = 2 C4 (its p. 3); 2 C4 with C4 in angular frequency gives 154 per 10^-22 m^4 s^-1, and in ordinary frequency 965; neither is 127, and Werbowy does not give the conversion. These are reproduced comparison values in werbowy_2026 (not taken there).

FURTHER DATA CITED AND NOT IN THE LIBRARY: Sohns and Kock, JQSRT 47, 325 (1992); Jones, Musiol and Wiese, Spectral Line Shapes 2, 125 (printed 1993 here, 1983 in milosavljevic_2006); Musiolek, Beitr. Plasmaphys. 21, 179 (1981); Bakshi and Kearney, JQSRT 42, 405 (1989); Ernst, Müller and Zaengel, Physica C 93, 414 (1978) (krypton).

Recorded bibliographic identity status: VALIDATED_WITH_WARNINGS. This concerns identification of the source; it does not establish the scientific correctness of its contents.

Datasets

No datasets are recorded.

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 review register for the checks and decisions.