Absolute Line Intensities in the Bands ν2 and ν5 and the Transition Dipole Moments of CH3F

✍ Scribed by V. Dunjko; M. Nischan; D. Clark; A.W. Mantz; D. Papousek

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 462 KB
• Volume: 159
• Category: Article
• ISSN: 0022-2852
• DOI: 10.1006/jmsp.1993.1101

✦ Synopsis

The absolute intensities of 188 vibration-rotational spectral lines of transitions to the vibrational states (\nu_{2}=1) and (\nu_{5}=1) of ({ }^{12} \mathrm{CH}_{3} \mathrm{~F}) have been measured with a diode laser. By taking into account the mixing of the rovibrational wavefunctions of both vibrational states by Coriolis and 1-type interactions ( Papoušek, Papoušková, Ogilvie, Pracna, Civiš, and Winnewisser. J. Mol. Spectrosc. 153, 145-166 (1992)), the values of the vibrational transition moments and their relative signs were determined by a least squares fit to the experimental data:

[
\begin{aligned}
\left\langle 0.0^{0}\left|\mu_{z}\right| 1.0^{0}\right\rangle=\epsilon \times(0.01106 \pm 0.00017) \mathrm{D} & & \text { and } \
\left\langle 0.0^{0}\left|\mu_{x}\right| 0,1^{ \pm 1}\right\rangle=\epsilon \times(0.02173 \pm 0.00005) \mathrm{D} & & \text { where } \epsilon= \pm 1
\end{aligned}
]