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).
Graduate School of Global Environmental Studies and Department of Molecular Engineering, Kyoto University, Kyoto 615-8510, Japan. kawasaki@moleng.kyoto-u.ac.jp
Shinji
S
Nakamichi
Yoshimitsu
Y
Kawaguchi
Hisato
H
Fukuda
Shinichi
S
Enami
Satoshi
S
Hashimoto
Masahiro
M
Kawasaki
Toyofumi
T
Umekawa
Isamu
I
Morino
Hiroshi
H
Suto
Gen
G
Inoue
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