Measurements of rotational transitions and hyperfine structure in PH2D

Stephen G Kukolich, LeRoy Schaum, Alice Murray

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Abstract

New rotational transition frequencies and measurements of hyperfine structure on two transitions are reported for PH2D. All observed transitions are Q branch (ΔJ = 0) so only two independent rotational constants are obtained. These are A-C = 46 593.44 ± 0.67 MHz and κ(A-C) = 2B-A-C = -34 545.9 ± 1.3 MHz. Nine transitions were fit to these parameters and the distortion parameter DJK to obtain DJK = 4.30 ± 0.04 MHz. Hyperfine structure due to spin-rotation interactions was observed on the 110 ← 111 transition at 6 024.645 MHz and on the 414 ← 404 transition at 20 815.334 MHz. Spin-rotation tensor components obtained are (Maa + Mbb) 2 = (Maa + Mcc) 2 = -98 ± 3 kHz.

Original languageEnglish (US)
Pages (from-to)393-398
Number of pages6
JournalJournal of Molecular Spectroscopy
Volume94
Issue number2
DOIs
StatePublished - 1982

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hyperfine structure
Tensors
tensors
interactions

ASJC Scopus subject areas

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

Cite this

Measurements of rotational transitions and hyperfine structure in PH2D. / Kukolich, Stephen G; Schaum, LeRoy; Murray, Alice.

In: Journal of Molecular Spectroscopy, Vol. 94, No. 2, 1982, p. 393-398.

Research output: Contribution to journalArticle

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abstract = "New rotational transition frequencies and measurements of hyperfine structure on two transitions are reported for PH2D. All observed transitions are Q branch (ΔJ = 0) so only two independent rotational constants are obtained. These are A-C = 46 593.44 ± 0.67 MHz and κ(A-C) = 2B-A-C = -34 545.9 ± 1.3 MHz. Nine transitions were fit to these parameters and the distortion parameter DJK to obtain DJK = 4.30 ± 0.04 MHz. Hyperfine structure due to spin-rotation interactions was observed on the 110 ← 111 transition at 6 024.645 MHz and on the 414 ← 404 transition at 20 815.334 MHz. Spin-rotation tensor components obtained are (Maa + Mbb) 2 = (Maa + Mcc) 2 = -98 ± 3 kHz.",
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