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首页> 外文期刊>Nuclear Instruments & Methods in Physics Research. B, Beam Interactions with Materials and Atoms >Femtosecond dynamics - snapshots of the early ion-track evolution
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Femtosecond dynamics - snapshots of the early ion-track evolution

机译：飞秒动力学-早期离子轨迹演变的快照

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摘要

The energy dissipation and femtosecond dynamics due to fast heavy ions in matter is critically reviewed with emphasis on possible mechanisms that lead to material modifications. Starting from a discussion of the initial electronic energy-deposition processes, three basic mechanisms for the conversion of electronic into atomic energy are investigated by means of Auger-electron spectroscopy. Results for amorphous Si, amorphous C and polypropylene are presented and discussed. Experimental evidence for a highly charged track region as well as for hot electrons inside tracks is shown. As follows mainly from Auger-electron spectroscopy, there are strong indications for different track-production mechanisms in different materials.
机译：严格审查了物质中快速重离子引起的能量耗散和飞秒动力学，重点研究了导致材料改性的可能机理。从对初始电子能量沉积过程的讨论开始，通过俄歇电子能谱研究了将电子转化为原子能的三种基本机理。介绍并讨论了非晶硅，非晶碳和聚丙烯的结果。显示了高电荷轨道区域以及轨道内部热电子的实验证据。主要从俄歇电子能谱学得出以下结论，这表明在不同材料中产生不同的轨迹产生机理。

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