| 非线性激光场中电子与氦原子的散射研究 |
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| 引用本文： | 王晓文,梁明超,朱遵略.非线性激光场中电子与氦原子的散射研究[J].河南师范大学学报(自然科学版),2010,38(2). |
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| 作者姓名： | 王晓文 梁明超 朱遵略 |
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| 作者单位： | 1. 河南师范大学,物理与信息工程学院,河南,新乡,453007
2. 江西理工大学,应用科学学院,江西,赣州,341000 |
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| 基金项目： | 国家自然科学基金，河南省基础与前沿技术研究项目，河南省自然科学基金，河南省骨干教师资助项目 |
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| 摘 要： | 应用玻恩近似理论,在一种特殊的散射模式(非线性激光场的波矢k垂直于散射平面,极化方向x^,y^互相垂直且都垂直于k)下,利用静电屏蔽的Yukawa势,计算了非线性激光场中氦原子被电子散射的微分散射截面.从计算结果中可以看出,频率参数p和交换光子数的不同对微分散射截面的变化趋势影响较大.这也间接说明了这些散射过程中原子亚稳态俘获现象的存在.
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| 关 键 词： | 激光辅助散射 非线性激光场 玻恩近似 微分散射截面 |
Electron-He Scattering in Non-liner Laser Field |
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| WANG Xiao-wen,LIANG Ming-chao,ZHU Zun-lue.Electron-He Scattering in Non-liner Laser Field[J].Journal of Henan Normal University(Natural Science),2010,38(2). |
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| Authors: | WANG Xiao-wen LIANG Ming-chao ZHU Zun-lue |
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| Abstract: | The differential cross sections of e-helium are calculated by using the analytic screening electric Yukawa potential in the non-liner laser field and empolying the Born approximation in an especial scattering geometry (the wave vector perpendicular to the scattering plane,and the polarization direction 、,inter- perpendicular,moreover,they are entirely perpendicular to ). From these results,it can be found that the different exchanges of photons and the frequency parameter p have a considerable effect on the change of the DCSs. These phenomena show indirectly that there are metastable atom trapping in these scatt ering processes. |
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| Keywords: | Laser-assisted scattering non-liner laser field Born approximation differential cross section |
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