Relative intensity of a cross-over resonance to lamb dips observed in stark spectroscopy of methane

Okuda, Shoko

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https://hdl.handle.net/2142/96925 Copy

Description

Title

Relative intensity of a cross-over resonance to lamb dips observed in stark spectroscopy of methane

Author(s)

Okuda, Shoko

Contributor(s)

Sasada, Hiroyuki

Issue Date

2017-06-20

Keyword(s)

Small molecules

Abstract

Last ISMS, we reported on Stark effects of the $nub{3}$ band of methane observed with a sub-Doppler resolution spectrometer. We determined the rotation-induced permanent dipole moment (PEDM) in the vibrational ground state and the vibration-, rotation-, and Coriolis-type-interaction-induced PEDMs in the $v_{3}=1$ state. _x000d_ _x000d_ begin{wrapfigure}{r}{9cm}_x000d_ includegraphics[width=9cm]{abstfig.eps}_x000d_ end{wrapfigure}_x000d_ Figure illustrates Stark modulation spectrum of the $Q(6)E$ with the external electric field of 31.0 kV/cm and the selection rule of $Delta M=pm1$, where $M$ is the magnetic quantum number. The $Delta M=1$ and $-1$ components of the Lamb dips labeled by $A$ and $B$ are resolved, and the central component $C$ is identified with the cross-over resonance. The Lamb dips are assigned to the magnetic quantum numbers of the lower and upper states, $(M'',M')$ according to the Clebsch-Gordan coefficients. We found that the relative intensity of the cross-over resonance to the associated Lamb dips depends on the $P$, $Q$, and $R$ branches. We ascribe the dependence to the collisional relaxation processes._x000d_

Publisher

International Symposium on Molecular Spectroscopy

Type of Resource

text

Language

eng

Permalink

http://hdl.handle.net/2142/96925

DOI

https://doi.org/10.15278/isms.2017.TK01

Copyright and License Information

Copyright 2017 Shoko Okuda

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