| 高斯激光场中穿进轨道电子横向动量的阈值 |
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| 引用本文： | 张绍银,艾树涛.高斯激光场中穿进轨道电子横向动量的阈值[J].原子与分子物理学报,2008,25(4):945-950. |
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| 作者姓名： | 张绍银 艾树涛 |
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| 作者单位： | 临沂师范学院物理系凝聚态物理研究所,山东省临沂市,276005 |
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| 基金项目： | 中国科学院半导体研究所超晶格国家重点实验室的开放研究课题，国家自然科学基金 |
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| 摘 要： | 采用数值模拟计算的方法,分析了强激光场中电子的动力学特性,发现穿进轨道电子的入射动量存在一定的阈值.通过研究穿进轨道电子的动力学特征,探讨了电子入射动量的阈值条件,发现与阈值相关的两个因素:激光强度和光束腰宽,推导了阈值的定标关系,结果显示:定标式与数值计算结果基本相符合.
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| 关 键 词： | 激光与电子的相互作用 激光场衍射效应 数值模拟 动量阈值 |
Threshold of electron transverse momentum of penetration into Gaussian laser field |
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| ZHANG Shao-Yin,AI Shu-Tao.Threshold of electron transverse momentum of penetration into Gaussian laser field[J].Journal of Atomic and Molecular Physics,2008,25(4):945-950. |
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| Authors: | ZHANG Shao-Yin AI Shu-Tao |
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| Institution: | Department of Physics and Institute of Condensed Matter Physics, Linyi Normal University |
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| Abstract: | The dynamics characteristics of relativistic electron injected into intense vacuum laser fields have been investigated by using numerical simulation method. It has been illuminated that there exists injection transverse momentum threshold for the penetration trajectory. Based on the characteristics of the penetration electron, the electron momentum threshold has been explored. It has been found that the two factors about the threshold are laser intensity and beam width. Finally, the quantitative relation about the momentum threshold has been derived. The result of the quantitative relation basically accords with the result of numerical simulation. |
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| Keywords: | mechanical effects of laser on electrons wave diffraction numerical simulation method momentum threshold |
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