Dissociation energy of the ground state of NaH

Hsien Yu Huang, Tsai Lien Lu, Thou-Jen Whang, Yung Yung Chang, Chin-Chun Tsai

Research output: Contribution to journalArticle

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Abstract

The dissociation energy of the ground state of NaH was determined by analyzing the observed near dissociation rovibrational levels. These levels were reached by stimulated emission pumping and fluorescence depletion spectroscopy. A total of 114 rovibrational levels in the ranges 9≤ v″ ≤21 and 1≤ J″ ≤14 were assigned to the X σ1 + state of NaH. The highest vibrational level observed was only about 40 cm-1 from the dissociation limit in the ground state. One quasibound state, above the dissociation limit and confined by the centrifugal barrier, was observed. Determining the vibrational quantum number at dissociation vD from the highest four vibrational levels yielded the dissociation energy De =15 815±5 cm-1. Based on new observations and available data, a set of Dunham coefficients and the rotationless Rydberg-Klein-Rees curve were constructed. The effective potential curve and the quasibound states were discussed.

Original languageEnglish
Article number044301
JournalJournal of Chemical Physics
Volume133
Issue number4
DOIs
Publication statusPublished - 2010 Jul 28

Fingerprint

Ground state
dissociation
ground state
energy
Pumping (laser)
Stimulated emission
Fluorescence spectroscopy
curves
stimulated emission
quantum numbers
depletion
pumping
fluorescence
coefficients
spectroscopy

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Huang, Hsien Yu ; Lu, Tsai Lien ; Whang, Thou-Jen ; Chang, Yung Yung ; Tsai, Chin-Chun. / Dissociation energy of the ground state of NaH. In: Journal of Chemical Physics. 2010 ; Vol. 133, No. 4.
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Dissociation energy of the ground state of NaH. / Huang, Hsien Yu; Lu, Tsai Lien; Whang, Thou-Jen; Chang, Yung Yung; Tsai, Chin-Chun.

In: Journal of Chemical Physics, Vol. 133, No. 4, 044301, 28.07.2010.

Research output: Contribution to journalArticle

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T1 - Dissociation energy of the ground state of NaH

AU - Huang, Hsien Yu

AU - Lu, Tsai Lien

AU - Whang, Thou-Jen

AU - Chang, Yung Yung

AU - Tsai, Chin-Chun

PY - 2010/7/28

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AB - The dissociation energy of the ground state of NaH was determined by analyzing the observed near dissociation rovibrational levels. These levels were reached by stimulated emission pumping and fluorescence depletion spectroscopy. A total of 114 rovibrational levels in the ranges 9≤ v″ ≤21 and 1≤ J″ ≤14 were assigned to the X σ1 + state of NaH. The highest vibrational level observed was only about 40 cm-1 from the dissociation limit in the ground state. One quasibound state, above the dissociation limit and confined by the centrifugal barrier, was observed. Determining the vibrational quantum number at dissociation vD from the highest four vibrational levels yielded the dissociation energy De =15 815±5 cm-1. Based on new observations and available data, a set of Dunham coefficients and the rotationless Rydberg-Klein-Rees curve were constructed. The effective potential curve and the quasibound states were discussed.

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