Absorption Spectrum of H218O in the Range 12 400–14 520 cm−1

✍ Scribed by Mizuho Tanaka; James W. Brault; Jonathan Tennyson

• Publisher: Elsevier Science
• Year: 2002
• Tongue: English
• Weight: 77 KB
• Volume: 216
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.2002.8670

✦ Synopsis

Fourier transform spectra recorded using (a) natural abundance water vapor, (b) H 2 18 O-enriched water vapor, and (c) H 2 17 Oenriched water vapor are analyzed. The ratio of intensities in three spectra is used to identify 927 lines due to absorption by H 2 18 O. Intensities and self-broadening parameters are derived for these lines. Using theoretical linelists, comparisons with previously assigned H 2 16 O spectra, and automatic searches for combination differences, 747 lines are assigned. These lines belong to 14 vibrational states in the 3ν + δ and 4ν polyads. Newly determined H 2 18 O vibrational band origins include 4ν 1 at 13 793.09 cm -1 , 3ν 1 + ν 3 at 13 795.40 cm -1 , 2ν 1 + 2ν 3 at 14 188.82 cm -1 , ν 1 + 3ν 3 at 14 276.34 cm -1 , and 2ν 2 + 2ν 2 + ν 3 at 13 612.71 cm -1 . These results are compared with data in HITRAN.