Buffer-gas pressure broadening for the (3 0(0) 1)III <-- (0 0 0) band of CO2 measured with continuous-wave cavity ring-down spectroscopy.
Buffer-gas pressure broadening for the (3 0(0) 1)(III)<--(0 0 0) band of CO(2) in the 1600 nm region was investigated with continuous wave cavity ring-down spectroscopy within the temperature range 263-326 K. The measured absorption profiles were analyzed with Voigt functions. Pressure broadening coefficient, gamma(gas), and the temperature dependent parameter (broadening exponent), n, were determined for a variety of buffer gases: N(2), O(2), He, Ne, Ar, Kr and Xe. gamma(air) values estimated subsequently are 0.096(2) for R(0), 0.085(5) for P(8), 0.075(2) for P(16), 0.070(4) for P(26), and 0.069(2) for P(38) in units of cm(-1) atm(-1), where numbers in parentheses are one standard deviation in units of the last digits quoted. n(air) values are 0.77(4) for R(0), and 0.73(11) for P(8).
Nakamichi
Shinji
S
Graduate School of Global Environmental Studies and Department of Molecular Engineering, Kyoto University, Kyoto 615-8510, Japan. kawasaki@moleng.kyoto-u.ac.jp
Kawaguchi
Yoshimitsu
Y
Fukuda
Hisato
H
Enami
Shinichi
S
Hashimoto
Satoshi
S
Kawasaki
Masahiro
M
Umekawa
Toyofumi
T
Morino
Isamu
I
Suto
Hiroshi
H
Inoue
Gen
G
D002021:Buffers; D002245:Carbon Dioxide / Q000737:chemistry*; D005740:Gases / Q000737:chemistry*; D006358:Hot Temperature; D008962:Models, Theoretical; D009584:Nitrogen / Q000737:chemistry; D005741:Noble Gases / Q000737:chemistry; D011312:Pressure; D013057:Spectrum Analysis / Q000295:instrumentation / Q000379:methods
D002021:Buffers; D005740:Gases; D005741:Noble Gases; D002245:Carbon Dioxide; D009584:Nitrogen