The electronic emission spectrum of IBr+ A2ΠX2Π

S. M. Mason; Richard Tuckett

doi:10.1016/0301-0104(86)87067-7

The electronic emission spectrum of IBr+ A2ΠX2Π

S. M. Mason, Richard Tuckett

Chemistry

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Abstract

The A2Π–X2Π electronic emission spectrum of IBr+ has been recorded at a low rotational temperature in a crossed molecular beam/electron beam apparatus. Because IBr in the gas phase is in permanent equilibrium with I2(g) and Br2(g), it is necessary to subtract digitally the complete Br+2 A–X spectrum (which lies in the same spectral region as IBr+ A–X), recorded under identical conidtions, to recover the underlying IBr+ A–X spectrum. Emission is observed only from the lower Ω = 32 spin-orbit component of A2Π, since the majority of the Ω = 12 vibrational levels lie above the lowest I+ + Br dissociation energy. The spectrum shows the effects of the two bromine isotopes, and is analysed to yield spectroscopic constants for the two electronic states. The results are correlated with the most accurate photoelectron data for IBr, and with recent ion coincidence experiments on IBr+.

Original language	English
Pages (from-to)	383-391
Journal	Chemical Physics
Volume	109
Issue number	2-3
DOIs	https://doi.org/10.1016/0301-0104(86)87067-7
Publication status	Published - 1 Nov 1986

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title = "The electronic emission spectrum of IBr+ A2ΠX2Π",

abstract = "The A2Π–X2Π electronic emission spectrum of IBr+ has been recorded at a low rotational temperature in a crossed molecular beam/electron beam apparatus. Because IBr in the gas phase is in permanent equilibrium with I2(g) and Br2(g), it is necessary to subtract digitally the complete Br+2 A–X spectrum (which lies in the same spectral region as IBr+ A–X), recorded under identical conidtions, to recover the underlying IBr+ A–X spectrum. Emission is observed only from the lower Ω = 32 spin-orbit component of A2Π, since the majority of the Ω = 12 vibrational levels lie above the lowest I+ + Br dissociation energy. The spectrum shows the effects of the two bromine isotopes, and is analysed to yield spectroscopic constants for the two electronic states. The results are correlated with the most accurate photoelectron data for IBr, and with recent ion coincidence experiments on IBr+.",

author = "Mason, {S. M.} and Richard Tuckett",

year = "1986",

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doi = "10.1016/0301-0104(86)87067-7",

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T1 - The electronic emission spectrum of IBr+ A2ΠX2Π

AU - Mason, S. M.

AU - Tuckett, Richard

PY - 1986/11/1

Y1 - 1986/11/1

N2 - The A2Π–X2Π electronic emission spectrum of IBr+ has been recorded at a low rotational temperature in a crossed molecular beam/electron beam apparatus. Because IBr in the gas phase is in permanent equilibrium with I2(g) and Br2(g), it is necessary to subtract digitally the complete Br+2 A–X spectrum (which lies in the same spectral region as IBr+ A–X), recorded under identical conidtions, to recover the underlying IBr+ A–X spectrum. Emission is observed only from the lower Ω = 32 spin-orbit component of A2Π, since the majority of the Ω = 12 vibrational levels lie above the lowest I+ + Br dissociation energy. The spectrum shows the effects of the two bromine isotopes, and is analysed to yield spectroscopic constants for the two electronic states. The results are correlated with the most accurate photoelectron data for IBr, and with recent ion coincidence experiments on IBr+.

AB - The A2Π–X2Π electronic emission spectrum of IBr+ has been recorded at a low rotational temperature in a crossed molecular beam/electron beam apparatus. Because IBr in the gas phase is in permanent equilibrium with I2(g) and Br2(g), it is necessary to subtract digitally the complete Br+2 A–X spectrum (which lies in the same spectral region as IBr+ A–X), recorded under identical conidtions, to recover the underlying IBr+ A–X spectrum. Emission is observed only from the lower Ω = 32 spin-orbit component of A2Π, since the majority of the Ω = 12 vibrational levels lie above the lowest I+ + Br dissociation energy. The spectrum shows the effects of the two bromine isotopes, and is analysed to yield spectroscopic constants for the two electronic states. The results are correlated with the most accurate photoelectron data for IBr, and with recent ion coincidence experiments on IBr+.

U2 - 10.1016/0301-0104(86)87067-7

DO - 10.1016/0301-0104(86)87067-7

M3 - Article

SN - 0301-0104

VL - 109

SP - 383

EP - 391

JO - Chemical Physics

JF - Chemical Physics

IS - 2-3

ER -

The electronic emission spectrum of IBr+ A2ΠX2Π

Abstract

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