| 激光诱导等离子体中铜原子和铜离子的时空行为 |
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| 引用本文： | 凌浩,吴嘉达,应质峰,孙剑,许宁,李富铭.激光诱导等离子体中铜原子和铜离子的时空行为[J].原子核物理评论,2002,19(2):195-198. |
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| 作者姓名： | 凌浩 吴嘉达 应质峰 孙剑 许宁 李富铭 |
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| 作者单位： | 复旦大学光科学与工程系 |
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| 基金项目： | 国家自然科学基金资助项目(19974009, 19975012); 教育部跨世纪优秀人才计划基金资助项目 |
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| 摘 要： | 通过光谱观察 ,考察了激光诱导铜等离子体的动力学过程和等离子体成分的时空行为 .不同能量的等离子体粒子 ,产生的机制不同 ,在时空演变过程中显示的行为不同 ,它们受背景气氛的影响也不同.By observing the optical emissions from copper plasma induced by laser ablationof a copper target, the dynamics of the plasma and the temporal and spatial behaviors of the plasma species are examined. The plasma is ignited from target ablation, evolves from the breakdown of the copper vapor to collisions between copper particles and energetic electrons. At the initial stage, the plasma contains large amount of copper ions and high-excited copper atoms, and then evolves to have low-energy copper...
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| 关 键 词： | 激光烧蚀 激光诱导等离子体 蒸汽击穿 激发 电离 |
| 文章编号： | 1007-4627(2002)02-0195-04 |
| 收稿时间： | 1900-01-01 |
| 修稿时间： | 2002年3月5日 |
Spatial and Temporal Behaviors of Copper Atoms and Ions in Laser-induced Plasma |
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| Institution: | Department of Optical Science and Engineering, Fudan University, Shanghai 200433, China |
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| Abstract: | By observing the optical emissions from copper plasma induced by laser ablationof a copper target, the dynamics of the plasma and the temporal and spatial behaviors of the plasma species are examined. The plasma is ignited from target ablation, evolves from the breakdown of the copper vapor to collisions between copper particles and energetic electrons. At the initial stage, the plasma contains large amount of copper ions and high-excited copper atoms, and then evolves to have low-energy copper... |
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