QED cascade induced by a high-energy γ photon in a strong laser field

被引：30
|
作者：
Tang, Suo [1 ,2 ]
Bake, Muhammad Ali [1 ,2 ]
Wang, Hong-Yu [3 ]
Xie, Bai-Song [1 ,2 ]
机构：
[1] Beijing Normal Univ, Minist Educ, Key Lab Beam Technol & Mat Modificat, Beijing 100875, Peoples R China
[2] Beijing Normal Univ, Coll Nucl Sci & Technol, Beijing 100875, Peoples R China
[3] Anshan Normal Univ, Dept Phys, Anshan 114005, Peoples R China
来源：
PHYSICAL REVIEW A | 2014年 / 89卷 / 02期
基金：
中国国家自然科学基金;
关键词：
PAIR PRODUCTION;
D O I：
10.1103/PhysRevA.89.022105
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The QED cascade induced by the two counterpropagating lasers is studied. It is demonstrated that the probability of a seed photon to create a pair is much larger than that of a seed electron. By analyzing the dynamic characteristics of the electron and positron created by the seed photon, it is found that the created particles are more likely to emit photons than the seed electron. With these results, furthermore, we demonstrate that the QED cascade can be more easily triggered by the seed photon than by the seed electron with the same incident energy and the same laser.
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页数：8
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