Numerical studies on pair production in ultra-intense laser interaction with a thin solid-foil  

作　　者：Yunxian TIAN Xiaolin JIN Xiaoliang GU Weizhong YAN Jianqing LI Bin LI 田云先;金晓林;谷晓梁;颜卫忠;李建清;李斌(National Key Laboratory of Science and Technology on Vacuum Electronics, School of Physical Electronics, University of Electronic Science and Technology of China;Shanghai Aerospace Electronics Co., Ltd, China Academy of Aerospace Electronics Technology)

机构地区：[1]National Key Laboratory of Science and Technology on Vacuum Electronics,School of Physical Electronics,University of Electronic Science and Technology of China,Chengdu 610054,People＇s Republic of China [2]Shanghai Aerospace Electronics Co.,Ltd,China Academy of Aerospace Electronics Technology,Shanghai 201821,People＇s Republic of China

出　　处：《Plasma Science and Technology》2018年第8期11-15,共5页等离子体科学和技术（英文版）

基　　金：supported by Fundamental Research Funds for the Central Universities(Grant Nos.ZYGX2016J065 and ZYGX2016J066)

摘　　要：A theoretical and numerical model of photon and electron–positron pair production in strong-field quantum electrodynamics（QED） is described. Two processes are contained in our QED theoretical model, one is photon emission in the interaction of ultra-intense laser with relativistic electron（or positron）, and the other is pair production by a gamma-ray photon interacting with the laser field.This model has been included in a PIC/MCC simulation code named BUMBLEBEE 1 D, which is used to simulate the laser plasma interaction. Using this code, the evolutions of electron–positron pair and gamma-ray photon production in ultra-intense laser interaction with aluminum foil target are simulated and analyzed. The simulation results revealed that more positrons are moved in the opposite direction to the incident direction of the laser under the charge separation field.A theoretical and numerical model of photon and electron–positron pair production in strong-field quantum electrodynamics（QED） is described. Two processes are contained in our QED theoretical model, one is photon emission in the interaction of ultra-intense laser with relativistic electron（or positron）, and the other is pair production by a gamma-ray photon interacting with the laser field.This model has been included in a PIC/MCC simulation code named BUMBLEBEE 1 D, which is used to simulate the laser plasma interaction. Using this code, the evolutions of electron–positron pair and gamma-ray photon production in ultra-intense laser interaction with aluminum foil target are simulated and analyzed. The simulation results revealed that more positrons are moved in the opposite direction to the incident direction of the laser under the charge separation field.

关 键 词：QED ultra-intense laser gamma ray photon electron-positron pair 

分 类 号：O413.2[理学—理论物理]