| 激光击穿氧气的等离子体光谱时间演化特性研究 |
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| 引用本文： | 林兆祥,陈波,张文艳,吴金泉.激光击穿氧气的等离子体光谱时间演化特性研究[J].中南民族大学学报(自然科学版),2006,25(2):39-43. |
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| 作者姓名： | 林兆祥 陈波 张文艳 吴金泉 |
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| 作者单位： | 1. 中南民族大学,电子信息工程学院,武汉,430074
2. 中南民族大学,计算与实验中心,武汉,430074 |
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| 摘 要： | 在300～900 nm范围内,对激光击穿氧气的等离子体光谱进行了探测,研究了其时间演化特性.发现在等离子体形成的初期,辐射的主要成分是在很强的连续谱背景下混合着O2,O2^＋和O^＋激发的线状谱.在等离子体形成后的5μs,只剩下氧原子谱,其最长寿命可达30μs.实验结果表明：光谱中的不同成份按照不同的时间特性衰减.
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| 关 键 词： | 激光诱导氧气等离子体 光谱时间演化特性 连续谱背景 线状谱 |
| 文章编号： | 1672-4321（2006）02-0039-05 |
| 收稿时间： | 2006-01-11 |
| 修稿时间： | 2006年1月11日 |
Spectral Temporal Development of Laser-Induced Oxygen Plasmas |
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| Lin Zhaoxiang,Chen Bo,Zhang Wenyan,Wu Jinquan.Spectral Temporal Development of Laser-Induced Oxygen Plasmas[J].Journal of South-Central Univ for,2006,25(2):39-43. |
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| Authors: | Lin Zhaoxiang Chen Bo Zhang Wenyan Wu Jinquan |
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| Institution: | 1 College of Electronics and Information Engineering, South-C, entral University for Nationalities, Wuhan 430074; 2 Center of Computing and Experimenting, South-C, entral University for Nationalities, Wuhan 430074 |
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| Abstract: | The spectra of the laser-induced oxygen plasmas are detected in the range of 300～900 nm. The spectral temporal behavior is investigated. At initial stage of plasma forming, the dominating radiation is a strong continuous background mixed with some lines of excited O2, O2+ and O+. After 5μs of plasma initiation, only the atomic oxygen spectra remain. The longest lifetime of O could reach 30μs. The experimental results show that different components of the spectra attenuate according to disparate mode along with temporal development. The track of energy transfer is discussed. |
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| Keywords: | laser-induced oxygen plasmas spectral temporal development continuous background line spectra |
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