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Near-Infrared Spectrum of the A2Πi–X2Σ+ (2,0) Band of CN Studied by Concentration Modulation Laser Spectroscopy

✍ Scribed by Yuyan Liu; Chuanxi Duan; Hongping Liu; Hui Gao; Yuanqing Guo; Xiaoyong Liu; Jieli Lin

Publisher
Elsevier Science
Year
2001
Tongue
English
Weight
104 KB
Volume
205
Category
Article
ISSN
0022-2852

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✦ Synopsis

The rotational structure of (2,0) vibrational band of A 2 ⌸ i -X 2 ⌺ ϩ transition of CN has been studied by concentrationmodulation laser spectroscopy using a Ti:sapphire laser. The CN radical was produced in the ac glow discharge of acetonitrile with helium as the carrier gas. All 12 branches including four new branches have been observed and measured with an absolute accuracy of 0.007 cm Ϫ1 in the region 12 450 -12 750 cm Ϫ1 . Analysis of the spectra has led to improved molecular parameters of the A 2 ⌸ i (vЈ ϭ 2) state.

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