Effects of laser intensity on the emission direction of fast electrons in laser-solid interactions  

作　　者：张军 张杰 邱阳 盛政明 李玉同 金展 滕浩 

机构地区：[1]Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China

出　　处：《Science China(Physics,Mechanics & Astronomy)》2003年第6期625-631,共7页中国科学：物理学、力学、天文学（英文版）

基　　金：the National Natural Science Foundation of China (Grant Nos,10105014, 10075075 and 10176034);the National High-Tech ICF Program;the National Key Basic Research Special Foundation (Grant No. G1999075200)

摘　　要：The dependence of emission direction of fast electrons on the laser intensity has been investigated. The experimental results show that, at nonrelativistic laser intensities, the emission of fast electrons is mainly in the polarization plane. With the increase of the laser intensity, fast electrons emit towards the laser propagation direction from laser polarization direction. At relativistic laser intensities, fast electrons move away from the laser polarization plane, closely to the reflection direction of the incident laser beam.The dependence of emission direction of fast electrons on the laser intensity has been investigated.The experimental results show that,at nonrelativistic laser intensities,the emission of fast electrons is mainly in the polarization plane.With the increase of the laser intensity,fast elec- trons emit towards the laser propagation direction from laser polarization direction.At relativistic laser intensities,fast electrons move away from the laser polarization plane,closely to the reflection direction of the incident laser beam.

关 键 词：FAST electron  ANGULAR distribution  ACCELERATION mechanism. 

分 类 号：TN24[电子电信—物理电子学]