Band (5, 0) in the Red System A2ΠI - X2Σ+ of CN Studied by Optical Heterodyne Magnetic Rotation Enhanced Concentration Modulation Spectroscopy

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, , Citation Xu Chao-Xiong et al 2002 Chinese Phys. Lett. 19 1277 DOI 10.1088/0256-307X/19/9/318

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Author affiliations

1 Key Laboratory of Optical and Magnetic Resonance Spectroscopy and Department of Physics, East China Normal University and Shanghai 200062

2 Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071

3 Department of Physics, Huazhong Normal University, Wuhan 430079

4 Author to whom correspondence should be addressed.

Dates

  1. Received 27 March 2002
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Abstract

We study the CN radical using optical heterodyne magnetic rotation enhanced concentration modulation spectroscopy in the visible region. The radical has been produced in the ac glow discharge of acetonitrile with helium as the carrier gas. The (5, 0) band of the red system A2ΠI - X2Σ+ in the range 17 450-17 830 cm-1 has been observed and rotationally analysed. We determine a set of precise molecular constants for the v = 5 vibrational level of CN in the A2ΠI state.

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