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 `__ · :doc:`Catalogue ` · :doc:`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 :doc:`review register ` for the checks and decisions.