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Feng WAN (弯峰), Chong LV (吕冲), Moran JIA (贾默然), Baisong XIE (谢柏松). Enhanced photon emission and pair production in laser-irradiated plasmas[J]. Plasma Science and Technology, 2017, 19(7): 75201-075201. DOI: 10.1088/2058-6272/aa64ed
Citation: Feng WAN (弯峰), Chong LV (吕冲), Moran JIA (贾默然), Baisong XIE (谢柏松). Enhanced photon emission and pair production in laser-irradiated plasmas[J]. Plasma Science and Technology, 2017, 19(7): 75201-075201. DOI: 10.1088/2058-6272/aa64ed

Enhanced photon emission and pair production in laser-irradiated plasmas

Funds: This work was supported by National Natural Science Foundation of China (NSFC) under Grant No. 11475026.
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  • Enhanced photon emission and pair production due to heavy ion mass in the interaction of an ultraintense laser with overdense plasmas is explored by particle-in-cell simulation. It is found that plasmas with heavier ion mass can excite a higher and broader electrostatic field, which causes the enhancement of backward photon emission. The pair yields are then enhanced due to the increase of backwards photons colliding with the incoming laser pulse. By examining the density evolution and angle distribution of each particle species, the origin of pair yield enhancement is clarified.
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