University of Illinois Urbana-Champaign

Search for inversion splitting of phosphine

Okuda, Shoko

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1152013.pptx
3139.pdf

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https://hdl.handle.net/2142/100555

Description

Title
Search for inversion splitting of phosphine
Author(s)
Okuda, Shoko
Contributor(s)
Sasada, Hiroyuki
Issue Date
2018-06-20
Keyword(s)
Mini-symposium: Frequency-Comb Spectroscopy
Date of Ingest
  • 2018-08-17T16:09:10Z
  • 2018-12-12T22:36:19Z
Abstract
Inversion splitting of phosphine molecules has been one of open questions in molecular spectroscopy. A recent calculation predicted that the splitting is 300 kHz and 3 MHz in the v2 = 3 and 4 states [1], where v2 is the vibrational quantum number of the ν2 mode. We have observed three Q-branch transitions in the 3ν2 band of phosphine using a comb-referenced sub-Doppler resolution spectrometer [2]. The spectrometer consists of a difference-frequency-generation source and a cavity-enhanced absorption cell with large beam spot size at beam waist to reduce transit-time broadening. The observed spectral linewidths are 150 kHz, but no inversion splitting has been observed. We now try to observe the 4ν2 − ν2 hot band. [1] C. Sousa-Silva, J. Tennyson, S. N. Yurchenko, J. Chem. Phys. 145, 091102 (2016). [2] S. Okuda, H. Sasada, J. Mol. Spectrosc., in press (2018).
Publisher
International Symposium on Molecular Spectroscopy
Type of Resource
text
Genre of Resource
Conference Paper / Presentation
Language
eng
Permalink
http://hdl.handle.net/2142/100555
DOI
10.15278/isms.2018.WG09
Copyright and License Information
Copyright 2018 Shoko Okuda

Owning Collections

Abstracts & Presentations - 2018 International Symposium on Molecular Spectroscopy PRIMARY