Gamma photons and electron-positron pairs from ultra-intense laser-matter interaction: A comparative study of proposed configurations  

作　　者：Yan-Jun Gu Martin Jirka Ondrej Klimo Stefan Weber 

机构地区：[1]Institute of Physics of the ASCR,ELI-Beamlines,Na Slovance 2,18221 Prague,Czech Republic [2]Institute of Plasma Physics of the CAS,Za Slovankou 1782/3,18200 Prague,Czech Republic [3]FNSPE,Czech Technical University in Prague,11519 Prague,Czech Republic [4]School of Science,Xi’an Jiaotong University,Xi’an 710049 China

出　　处：《Matter and Radiation at Extremes》2019年第6期37-43,共7页极端条件下的物质与辐射（英文）

基　　金：This work was supported by the projects ELITAS(No.CZ.02.1.01/0.0/0.0/16_013/0001793);High Field Initiative(No.CZ.02.1.01/0.0/0.0/15_003/0000449);both from the European Regional Development Fund.It was also supported by the project ADONIS(Advanced Research Using High Intensity Laser Produced Photons and Particles),No.CZ.02.1.01/0.0/0.0/16_019/0000789;from the European Regional Development Fund.The support of Czech Science Foundation Project No.18-09560S is acknowledged.Computational resources were provided by the MetaCentrum under the Program No.LM2010005,by the IT4Innovations Centre of Excellence under the Project Nos.CZ.1.05/1.1.00/02.0070 and LM2011033,and by the ECLIPSE cluster of ELI-Beamlines.The EPOCH code was developed as part of the UKEPSRC-funded Project No.EP/G054940/1.

摘　　要：High-energyγ-photon generation via nonlinear Compton scattering and electron–positron pair creation via the Breit–Wheeler process driven by laser–plasma interaction are modeled,and a number of mechanisms are proposed.Owing to the small cross section,these processes require both an ultra-intense laser field and a relativistic electron bunch.The extreme conditions for such scenarios can be achieved through recent developments in laser technology.Photon emission via nonlinear Thomson and Compton scattering has been observed experimentally.Highenergy positron beams generated via a multiphoton process have recently been observed too.This paper reviews the principles ofγ-ray emission and e+e−pair creation in the context of laser–plasma interaction.Several proposed experimental setups forγ-ray emission and e+e−pair creation by ultra-intense laser pulses are compared in terms of their efficiency and the quality of theγ-photon and positron beams produced for ultrashort(15 fs)and longer(150 fs)multi-petawatt laser beams.

关 键 词：interaction. POSITRON INTENSE 

分 类 号：O57[理学—粒子物理与原子核物理]