Spectroscopy for the C-O stretch band of CH{sub 3}OH using CO{sub 2} lasers

Conference · Sun Dec 31 04:00:00 EST 1995

OSTI ID:456931

Takagi, Kojiro ^[1]

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1. Toyama Univ., Gofuku (Japan)

The C-O stretch band of CH{sub 3}OH has been studied by combined use of microwave sideband spectroscopy and laser rf double resonance spectroscopy both using CO{sub 2} lasers. A microwave modulator of CO{sub 2} laser generates sidebands with frequencies of 8-18GHz and an output of a few milliwatts. By using this radiation source, transition frequencies can be measured with an accuracy of 3 MHz or better. Laser-rf double resonance technique enables observation of rf transitions between Stark components for Stark tuned infrared lines, which is useful both for the determination of a dipole moment component, {mu}{sub a}, and for the assignment of infrared transitions. By using these two methods, the low-J energy levels of E, v{sub t} = 1, k= -1, and k= 2 in the excited C-O stretch vibrational state have been determined accurately. The values of {mu}{sub a} have been also determined for various states in this vibrational state.

• OSTI ID: 456931
• Report Number(s): CONF-9506113--
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
ELECTRIC DIPOLE MOMENTS
LASER SPECTROSCOPY
METHANOL
VIBRATIONAL STATES