| 光谱学与光谱分析 |
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| LIF Spectroscopic Study of OH Radical |
| LI Jiong, DENG Lun-hua, MOU Zong-shuai, CHEN Yang-qin, YANG Xiao-hua* |
| State Key Laboratory of Precision Spectroscopy, Department of Physics, East China Normal University, Shanghai 200062, China |
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Abstract Hydroxyl radical molecular beam was generated by DC pulsed high voltage discharge. The rotational resolution excitation fluorescence spectra of the OH A 2Σ+-X 2Π (1, 0) band were observed by using second harmonious output of a nanosecond dye laser (around 282 nm). The rotational temperature of the (1, 0) band was determined to be (30±1) K based on the analysis of the intensity distribution of the H spectra. Moreover, the fluorescence decay curves of the (1, 1) band and the (0, 0) band and were obtained and the fluorescence lifetimes of A 2Σ+ (ｖ′=1) state and the X 2Π (ｖ″=0) state were fitted to be (637±16) and (675±13) ns, respectively.
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Received: 2009-09-06
Accepted: 2009-12-08
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Corresponding Authors:
YANG Xiao-hua
E-mail: xhyang@phy.ecnu.edu.cn
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