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Experimental study on the electric signal in the laser-induced Cu target
Author(s): JI Yun-jing, ZHANG Ping, TONG Chao-xia, BIAN Bao-min, LU Jian
Pages: 977-
981
Year: 2007
Issue:
5
Journal: JOURNAL OF ATOMIC AND MOLECULAR PHYSICS
Keyword: 激光等离子体; 金属元靶; 电学信号; 等效电路模型;
Abstract: 将高功率脉冲激光作用于金属元靶,探测激光诱导等离子体在靶上产生的电学信号.研究了作用激光能量的差异对等离子体电信号的影响,实验结果表明随着激光能量的增加电信号脉冲幅度逐渐增大并趋于饱和.同时,将激光烧蚀过程中的靶材等效为瞬态电流源,初步建立了激光诱导等离子体等效电路模型,并将该模型应用于激光烧蚀金属靶,对靶上电信号的产生机制进行了详细讨论.
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