Gamma-Rays Generated from Plasmas in the Interaction of Solid Targets with Femtosecond Laser Pulses
HE Jing-tang1, ZHANG Ping1,2, CHEN Duan-bao1, LI Zu-hao1, ZHANG Ying2, WANG Long2, FENG Bao-hua2, ZHANG Xiu-lan2, WEI Zhi-yi2, LI Zan-liang2, TANG Xiao-wei1, ZHANG Jie2,3
1Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039
2Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080
3Department of Physics, University of Oxford, OX1 3PU, UK
Gamma-Rays Generated from Plasmas in the Interaction of Solid Targets with Femtosecond Laser Pulses
1Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039
2Laboratory of Optical Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080
3Department of Physics, University of Oxford, OX1 3PU, UK
Abstract： The γ-rays with energies up to 300keV have been observed from plasmas produced by femtosecond laser pulses at a focused intensity of 5 x 1015 W.cm-2.μm2 irradiating Ta, Mo, and Cu targets. By introducing an 8% prepulse of 70ps before the main pulse, the fraction of high energy γ-ray photons (hv >l00keV) was significantly enhanced relative to low energy photons (hv < 100 keV).
(Plasma production and heating by laser beams (laser-foil, laser-cluster, etc.))
引用本文:
HE Jing-tang;ZHANG Ping;CHEN Duan-bao;LI Zu-hao;ZHANG Ying;WANG Long;FENG Bao-hua;ZHANG Xiu-lan;WEI Zhi-yi;LI Zan-liang;TANG Xiao-wei;ZHANG Jie;. Gamma-Rays Generated from Plasmas in the Interaction of Solid Targets with Femtosecond Laser Pulses[J]. 中国物理快报, 1998, 15(11): 816-818.
HE Jing-tang, ZHANG Ping, CHEN Duan-bao, LI Zu-hao, ZHANG Ying, WANG Long, FENG Bao-hua, ZHANG Xiu-lan, WEI Zhi-yi, LI Zan-liang, TANG Xiao-wei, ZHANG Jie,. Gamma-Rays Generated from Plasmas in the Interaction of Solid Targets with Femtosecond Laser Pulses. Chin. Phys. Lett., 1998, 15(11): 816-818.
1998, Vol. 15 
