Vacuum ultraviolet laser/time-of-flight mass spectroscopy: Ion-pair spectra of 79Br35Cl

S. S. Dimov; R. H. Lipson; T. Turgeon; J. A. Vanstone; P. Wang; D. S. Yang

doi:10.1063/1.466721

Vacuum ultraviolet laser/time-of-flight mass spectroscopy: Ion-pair spectra of ⁷⁹Br³⁵Cl

S. S. Dimov, R. H. Lipson, T. Turgeon, J. A. Vanstone, P. Wang, D. S. Yang

Chemistry

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26 Scopus citations

Abstract

A newly built vacuum ultraviolet (VUV) laser/time-of-flight mass spectrometer is described, which has been used to record the first vibrationally and rotationally resoved spectra of the E0⁺ ion-pair state ←X0⁺ ground state transition of jet-cooled bromine monochloride BrCl, near 145 nm. The mass resolution of the instrument (m/Δm≈1000) was sufficient to obtain single isotopomer data. Preliminary results for ⁷⁹Br³⁵Cl are reported. Like other interhalogens, BrCl vibronic band intensities vary widely in the VUV, presumably as a result of excited state perturbations. This scenario has been corroborated by the observation of an irregularly spaced vibrational progression, and the irregular behavior of the excited state rotational constants as a function of v′.

Original language	English
Pages (from-to)	8666-8672
Number of pages	7
Journal	Journal of Chemical Physics
Volume	100
Issue number	12
DOIs	https://doi.org/10.1063/1.466721
State	Published - 1994

ASJC Scopus subject areas

Physics and Astronomy (all)
Physical and Theoretical Chemistry

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title = "Vacuum ultraviolet laser/time-of-flight mass spectroscopy: Ion-pair spectra of 79Br35Cl",

abstract = "A newly built vacuum ultraviolet (VUV) laser/time-of-flight mass spectrometer is described, which has been used to record the first vibrationally and rotationally resoved spectra of the E0+ ion-pair state ←X0+ ground state transition of jet-cooled bromine monochloride BrCl, near 145 nm. The mass resolution of the instrument (m/Δm≈1000) was sufficient to obtain single isotopomer data. Preliminary results for 79Br35Cl are reported. Like other interhalogens, BrCl vibronic band intensities vary widely in the VUV, presumably as a result of excited state perturbations. This scenario has been corroborated by the observation of an irregularly spaced vibrational progression, and the irregular behavior of the excited state rotational constants as a function of v′.",

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T1 - Vacuum ultraviolet laser/time-of-flight mass spectroscopy

T2 - Ion-pair spectra of 79Br35Cl

AU - Dimov, S. S.

AU - Lipson, R. H.

AU - Turgeon, T.

AU - Vanstone, J. A.

AU - Wang, P.

AU - Yang, D. S.

PY - 1994

Y1 - 1994

N2 - A newly built vacuum ultraviolet (VUV) laser/time-of-flight mass spectrometer is described, which has been used to record the first vibrationally and rotationally resoved spectra of the E0+ ion-pair state ←X0+ ground state transition of jet-cooled bromine monochloride BrCl, near 145 nm. The mass resolution of the instrument (m/Δm≈1000) was sufficient to obtain single isotopomer data. Preliminary results for 79Br35Cl are reported. Like other interhalogens, BrCl vibronic band intensities vary widely in the VUV, presumably as a result of excited state perturbations. This scenario has been corroborated by the observation of an irregularly spaced vibrational progression, and the irregular behavior of the excited state rotational constants as a function of v′.

AB - A newly built vacuum ultraviolet (VUV) laser/time-of-flight mass spectrometer is described, which has been used to record the first vibrationally and rotationally resoved spectra of the E0+ ion-pair state ←X0+ ground state transition of jet-cooled bromine monochloride BrCl, near 145 nm. The mass resolution of the instrument (m/Δm≈1000) was sufficient to obtain single isotopomer data. Preliminary results for 79Br35Cl are reported. Like other interhalogens, BrCl vibronic band intensities vary widely in the VUV, presumably as a result of excited state perturbations. This scenario has been corroborated by the observation of an irregularly spaced vibrational progression, and the irregular behavior of the excited state rotational constants as a function of v′.

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Vacuum ultraviolet laser/time-of-flight mass spectroscopy: Ion-pair spectra of ⁷⁹Br³⁵Cl

Abstract

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