Noble Gas Broadening in Fundamental Bands of H2S

✍ Scribed by B. Sumpf; I. Meusel; H.-D. Kronfeldt

• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 139 KB
• Volume: 184
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1997.7290

✦ Synopsis

For 23 lines from all three fundamental bands of H 2 S, noble gas broadening coefficients were measured applying a two-channel diode laser spectrometer in pulsed mode. Altogether for 17 lines from the n 1 band ( 3

3 ) , and 5 lines from the n 3 band ( 3

) broadening coefficients g H 2 S -noble gas for collisions with helium, neon, argon, krypton, and xenon were determined. The broadening coefficients for lines from different bands with similar rotational quantum numbers are comparable. Within the studied quantum number range, as in the case of collisions with H 2 S and air, the broadening coefficients show a pronounced J Љ dependence but no K Љ a dependence. The values for g H 2 S -noble gas decrease strongly with increasing J Љ. The largest change is observable for collisions with argon and krypton where a decrease in g H 2 S -noble gas from values of about 0.1 to 0.013 cm 01 / atm occurs. The broadening coefficients for collisions with different noble gas perturbers for the majority of lines follow the trends g H