Temperature Dependence of Pressure Broadened Linewidth of J = 1 ⇐ 0 Rotational Transition of CH_{3}C_{14}N Molecule Mixed with OCS and H_{2} Molecule

• Authors: S. Gierszal , J. Galica , E. Miś-Kuźmińska
• Languages of publication: EN

Abstracts

EN

The temperature dependence of the pressure-broadening parameters of the J = 1 ⇐ 0 rotational transition of OCS and H_{2} in the ground vibrational state of CH_{3}C_{14}N molecule is measured in the temperature range between 248 and 293 K. The line shape of the absorption is recorded with a Stark modulated microwave spectrometer. Using least squares fits of the data to the Voigt line function, several contributions to the linewidth have been de­duced. The experimental results are compared with the calculated results us­ing Murphy and Boggs collision broadening theory. The pressure-broadening parameters C_{W}(x) of the gas mixture CH_{3}CN+OCS and CH_{3}CN+H_{2} are 14.05±0.30 MHz/Tr, 9.15±0.12 MHz/Tr, respectively and the temperature dependence parameters α are -0.90 ± 0.07 and -0.77 ± 0.08.

Keywords

EN

33.20.Bx; 33.70.Jg

Discipline

• 33.70.Jg: Line and band widths, shapes, and shifts
• 33.20.Bx: Radio-frequency and microwave spectra

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1995
• Volume: 87
• Issue: 3
• Pages: 585-597

Dates

published

1995-03

received

1994-08-02

(unknown)

1994-09-23

Contributors

author

S. Gierszal

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

J. Galica

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

author

E. Miś-Kuźmińska

• Institute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland

Identifiers

DOI

10.12693/APhysPolA.87.585