Diode laser wavelength modulated spectroscopy of I₂ at 675 nm

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• 作者：Eng ; Jessica A. ; Hardwick ; J.L. ; Raasch ; James A. ; Wolf ; Erich N.
• 关键词：Wavelength modulation spectroscopy ; Pressure broadening ; Pressure shift
• 刊名：Spectrochimica Acta Part A ; Molecular and Biomolecular Spectroscopy
• 出版年：2004
• 期刊代码：99_13861425
• 类别：ch
• 出版时间：December, 2004
• 卷：60
• 期：14
• 页码：3413-3419
• 文件大小：248 K

摘要

A free-running diode laser has been used to examine the spectrum of ¹²⁷I₂ near 675nm using wavelength modulation spectroscopy. Twelve transitions have been observed in the region between 14818.0 and 14819.3cm⁻¹, all of which are accounted for by previously published constants. Changes in quadrupole coupling constants, ΔeQq, have been determined for all lines. Pressure broadening and shift coefficients have been determined for two unblended lines for broadening by air, argon, and water vapor.