A<inf>1</inf>-A<inf>2</inf> splitting of CH<inf>3</inf>D

Masashi Abe, Hideyuki Sera, Hiroyuki Sasada

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Sub-Doppler resolution spectroscopy of CH<inf>3</inf>D has been carried out from 88.6 to 93.1 THz. Thirty transitions of the ν<inf>1</inf> and ν<inf>4</inf> bands from the low-J and K = 3 levels are observed, and the A<inf>1</inf>-A<inf>2</inf> splitting is resolved for twenty-three of the thirty transitions. The absolute frequencies are determined with a typical uncertainty of 4 kHz. The effective A<inf>1</inf>-A<inf>2</inf> splitting constant of the K = 3 levels is 2h<inf>3,</inf><inf>v</inf><inf>=0</inf> = (1.5641 ± 0.0026) Hz for the ground vibrational state, and those of the K = 3 levels for the v<inf>1</inf> = 1 state and of the (K = 2, l = -1) and (K = 4, l = +1) levels for the v<inf>4</inf> = 1 state are also determined.

Original languageEnglish
Pages (from-to)90-96
Number of pages7
JournalJournal of Molecular Spectroscopy
Volume312
DOIs
Publication statusPublished - 2015 Jun 1

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Spectroscopy
vibrational states
Uncertainty
spectroscopy

Keywords

  • A<inf>1</inf>-A<inf>2</inf> splitting
  • Difference frequency generation
  • Isotope methane
  • Mid-infrared
  • Optical frequency comb
  • Sub-Doppler resolution

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

Cite this

A<inf>1</inf>-A<inf>2</inf> splitting of CH<inf>3</inf>D. / Abe, Masashi; Sera, Hideyuki; Sasada, Hiroyuki.

In: Journal of Molecular Spectroscopy, Vol. 312, 01.06.2015, p. 90-96.

Research output: Contribution to journalArticle

Abe, Masashi ; Sera, Hideyuki ; Sasada, Hiroyuki. / A<inf>1</inf>-A<inf>2</inf> splitting of CH<inf>3</inf>D. In: Journal of Molecular Spectroscopy. 2015 ; Vol. 312. pp. 90-96.
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