Neutron Generation and Kinetic Energy of Expanding Laser Plasmas
HUANG Yong-Sheng1, WANG Nai-Yan1, DUAN Xiao-Jiao1, LAN Xiao-Fei1, TAN Zhi-Xin1, TANG Xiu-Zhang1, HE Ye-Xi2
1High Power Excimer Laser Laboratory, China Institute of Atomic Energy, Beijing 1024132Department of Engineering Physics, Tsinghua University, Beijing 100084
Neutron Generation and Kinetic Energy of Expanding Laser Plasmas
1High Power Excimer Laser Laboratory, China Institute of Atomic Energy, Beijing 1024132Department of Engineering Physics, Tsinghua University, Beijing 100084
摘要We investigate the kinetic energy of expanding plasma of a solid target heated by a ultra-short and ultra-intense laser pulse and the efficiency of energy coupling between the ultra-intense laser pulse and the solid target, in order to increase the utilization ratio of laser energy and to raise the neutron generation farther. Some new ideas about improving the energy utilization by head-on collisions between the expanding plasmas are proposed. The significance is the raise of generation of shorter duration neutron, of the order of picoseconds, which allows for an increase of energy resolution in time-of-flight experiments and also for the investigation of the dynamics of nuclear processes with high temporal resolution.
Abstract：We investigate the kinetic energy of expanding plasma of a solid target heated by a ultra-short and ultra-intense laser pulse and the efficiency of energy coupling between the ultra-intense laser pulse and the solid target, in order to increase the utilization ratio of laser energy and to raise the neutron generation farther. Some new ideas about improving the energy utilization by head-on collisions between the expanding plasmas are proposed. The significance is the raise of generation of shorter duration neutron, of the order of picoseconds, which allows for an increase of energy resolution in time-of-flight experiments and also for the investigation of the dynamics of nuclear processes with high temporal resolution.
HUANG Yong-Sheng;WANG Nai-Yan;DUAN Xiao-Jiao;LAN Xiao-Fei;TAN Zhi-Xin;TANG Xiu-Zhang;HE Ye-Xi. Neutron Generation and Kinetic Energy of Expanding Laser Plasmas[J]. 中国物理快报, 2007, 24(10): 2792-2795.
HUANG Yong-Sheng, WANG Nai-Yan, DUAN Xiao-Jiao, LAN Xiao-Fei, TAN Zhi-Xin, TANG Xiu-Zhang, HE Ye-Xi. Neutron Generation and Kinetic Energy of Expanding Laser Plasmas. Chin. Phys. Lett., 2007, 24(10): 2792-2795.
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2007, Vol. 24 
