| (O)H自由基LIF光谱研究 |
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| 引用本文： | 李炯,邓伦华,牟宗帅,陈扬骎,杨晓华. (O)H自由基LIF光谱研究[J]. 光谱学与光谱分析, 2010, 30(7): 1738-1742. DOI: 10.3964/j.issn.1000-0593(2010)07-1738-05 |
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| 作者姓名： | 李炯 邓伦华 牟宗帅 陈扬骎 杨晓华 |
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| 作者单位： | 华东师范大学物理系精密光谱科学与技术国家重点实验室,上海,200062;华东师范大学物理系精密光谱科学与技术国家重点实验室,上海,200062;华东师范大学物理系精密光谱科学与技术国家重点实验室,上海,200062;华东师范大学物理系精密光谱科学与技术国家重点实验室,上海,200062;华东师范大学物理系精密光谱科学与技术国家重点实验室,上海,200062 |
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| 基金项目： | 国家自然科学基金项目 |
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| 摘 要： | 利用脉冲高压直流放电技术产生H超声分子束,以纳秒染料激光二倍频输出(282 nm)作为激发光源,通过LIF光谱测量方法,获得了OH A 2Σ+-X 2Π(1, 0)带转动分辨激发荧光谱,并通过对谱线强度分布的分析和计算,得到X 2Π态H的转动温度为(30±1) K;通过对A 2Σ+-X 2Π (1, 1)带及(0, 0)带跃迁的荧光衰减时间谱测量,拟合得出H激发态 A 2Σ+ (ｖ′=1)及X 2Π (ｖ″=0)的寿命分别为(637±6)和(675±13) ns。
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| 关 键 词： | (O)H自由基 LIF光谱 转动温度 荧光寿命 |
| 收稿时间： | 2009-09-06 |
LIF Spectroscopic Study of OH Radical |
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| LI Jiong,DENG Lun-hua,MOU Zong-shuai,CHEN Yang-qin,YANG Xiao-hua. LIF Spectroscopic Study of OH Radical[J]. Spectroscopy and Spectral Analysis, 2010, 30(7): 1738-1742. DOI: 10.3964/j.issn.1000-0593(2010)07-1738-05 |
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| Authors: | LI Jiong DENG Lun-hua MOU Zong-shuai CHEN Yang-qin YANG Xiao-hua |
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| Affiliation: | 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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| Keywords: | OH radical LIF spectroscopy Rotational temperature Fluorescence lifetime |
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