Hot bands in the à ← X̃ spectrum of HCBr

Bor Chen Chang, Joseph Guss, Trevor J. Sears

研究成果: 雜誌貢獻期刊論文同行評審

24 引文 斯高帕斯(Scopus)

摘要

Spectra of both the Ã(0, 0, 0)-X̃(0, 1, 0) and Ã(0, 0, 0)-X̃(0, 0, 1) bands in the Ã-X̃ band system of HCBr have been recorded and rotationally assigned. The HCBr radical was formed by 193 mn excimer laser photolysis of bromoform. We found no signals from HCBr when the photolysis laser wavelength was changed to 248 mn, although strong CH product emission was observed by eye at both wavelengths. Most of the spectra were recorded in absorption at ambient temperature in a long-path absorption cell using a single frequency Ti:sapphire laser as the light source, but some congested sections were recorded under jet-cooled conditions. Analysis yielded accurate values for the vibrational fundamentals and rotational constants for the vibrationally excited ground state levels determined. A combination of experimental measurements and ab initio vibration-rotation constants was used to estimate equilibrium parameters and a ground state structure for HCBr. Published by Elsevier Science (USA).

原文???core.languages.en_GB???
頁(從 - 到)136-144
頁數9
期刊Journal of molecular spectroscopy
219
發行號1
DOIs
出版狀態已出版 - 5月 2003

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