Fluorescence excitation spectroscopy of the Ã2A1 ← X̃2B1 system of jet-cooled NH2 in the region 2900-4300 Å

Ju Xin, Haiyan Fan, Ionela Ionescu, Chris Annesley, Scott A. Reidb

Research output: Contribution to journalArticle

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Abstract

The fluorescence excitation spectrum of the NH2 Ã2A1 ← X̃2B1 system in the region 2900-4300 Å has been measured under jet-cooled conditions using a pulsed discharge source. A total of fourteen bands involving the pure bending states (0, v′2, 0) were observed and analyzed, including 10 bands not previously measured to our knowledge. The spectra are largely free from rotational perturbations at the low N values accessed in this experiment, and the molecular constants were obtained from a least squares fit to the determined spin-rovibronic term values. The derived constants are in good agreement with theoretical predictions incorporating the effects of orbital angular momentum on the spin-rotational fine structure.

Original languageEnglish
Pages (from-to)37-44
Number of pages8
JournalJournal of Molecular Spectroscopy
Volume219
Issue number1
DOIs
Publication statusPublished - May 2003
Externally publishedYes

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Angular momentum
Fluorescence
Spectroscopy
fluorescence
spectroscopy
excitation
angular momentum
Experiments
fine structure
orbitals
perturbation
predictions

ASJC Scopus subject areas

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

Cite this

Fluorescence excitation spectroscopy of the Ã2A1 ← X̃2B1 system of jet-cooled NH2 in the region 2900-4300 Å. / Xin, Ju; Fan, Haiyan; Ionescu, Ionela; Annesley, Chris; Reidb, Scott A.

In: Journal of Molecular Spectroscopy, Vol. 219, No. 1, 05.2003, p. 37-44.

Research output: Contribution to journalArticle

Xin, Ju ; Fan, Haiyan ; Ionescu, Ionela ; Annesley, Chris ; Reidb, Scott A. / Fluorescence excitation spectroscopy of the Ã2A1 ← X̃2B1 system of jet-cooled NH2 in the region 2900-4300 Å. In: Journal of Molecular Spectroscopy. 2003 ; Vol. 219, No. 1. pp. 37-44.
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abstract = "The fluorescence excitation spectrum of the NH2 {\~A}2A1 ← X̃2B1 system in the region 2900-4300 {\AA} has been measured under jet-cooled conditions using a pulsed discharge source. A total of fourteen bands involving the pure bending states (0, v′2, 0) were observed and analyzed, including 10 bands not previously measured to our knowledge. The spectra are largely free from rotational perturbations at the low N values accessed in this experiment, and the molecular constants were obtained from a least squares fit to the determined spin-rovibronic term values. The derived constants are in good agreement with theoretical predictions incorporating the effects of orbital angular momentum on the spin-rotational fine structure.",
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