典型文献
Micro-impulse and plasma plume produced by irradiating aluminum target with nanosecond laser pulses in double-pulse scheme
文献摘要：
The micro-impulse generated by ablating an aluminum target in double-pulse laser bursts with different interpulse delays was investigated using a torsion pendulum.The plasma plume was simultaneously visualized using high-speed photography to analyze the coupling mechanism of the ablation impulse.The experiment was carried out using a pulsed laser with a pulse width of 8 ns and a wavelength of 1064 nm.The experimental results show that an impulse with an interpulse delay of 60 ns is roughly 60％higher than that with no delay between the two pulses,when the energy of both laser pulses is 50 mJ.Therefore,double-pulse schemes could enhance the ablation impulse under certain conditions.This is because the ablation of the first laser pulse changes the optical properties of the aluminum target surface,increasing the absorptivity.However,the ablation impulse is reduced with a time delay of 20 ns when the energy of both laser pulses is 100 mJ or 150 mJ.It can be concluded that the plasma produced by ablating the aluminum with the first pulse shields the second laser pulse.To summarize,the experimental results show that different delay times in a double-pulse scheme have a significant effect on the ablation impulse.The study provides a reference for the optimization of the parameters when laser ablation propulsion with a double-pulse scheme is applied in the fields of space debris removal,laser ablation thrusters,and so on.
文献关键词：
中图分类号：
作者姓名：
Chenghao YU;Jifei YE;Weijing ZHOU;Hao CHANG;Wei GUO
作者机构：
State Key Laboratory of Laser Propulsion&Application,Department of Aerospace and Technology,Space Engineering University,Beijing 101416,People's Republic of China
文献出处：
引用格式：
[1]Chenghao YU;Jifei YE;Weijing ZHOU;Hao CHANG;Wei GUO-.Micro-impulse and plasma plume produced by irradiating aluminum target with nanosecond laser pulses in double-pulse scheme)[J].等离子体科学和技术（英文版）,2022(07):82-89
A类：
shields
B类：
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AB值：
0.431135
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