Analytical model for calculating laser ablation impulse coupling coefficient

Chang Hao; Jin Xing; Wen Ming; Ye Jifei; Li Nanlei

doi:10.3788/HPLPB20132505.1110

Volume 25 Issue 05

Mar. 2013

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(05): 1110-1114

Zhang Guowei, Cong Peitian, Qiao Kailai, et al. Loss characteristics of glassy alloy magnetic core under pulsed magnetization[J]. High Power Laser and Particle Beams, 2012, 24: 1247-1250. doi: 10.3788/HPLPB20122405.1247

Citation:

Chang Hao, Jin Xing, Wen Ming, et al. Analytical model for calculating laser ablation impulse coupling coefficient[J]. High Power Laser and Particle Beams, 2013, 25: 1110-1114. doi: 10.3788/HPLPB20132505.1110

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Analytical model for calculating laser ablation impulse coupling coefficient

doi: 10.3788/HPLPB20132505.1110

1.
State Key Laboratory of Laser Propulsion and Application,Academy of Equipment of PLA,Beijing 101416,China

Received Date: 2012-10-12
Rev Recd Date: 2012-12-03
Publish Date: 2013-03-12

Abstract

Abstract

Laser radiation has been considered as one kind of feasible methods to clean space debris. Impulse coupling coefficient is an important parameter to calculate the clean effects. An analytical model for calculating laser ablation impulse coupling coefficient is put forward. The impulse coupling coefficients in vapor mechanism and plasma mechanismare connected by the ionization fraction. Therefore, a unified model of impulse coupling coefficient is set up. The relationship of laser intensity, ionization fraction and impulse coupling coefficient is obtained with Al, the most common material of space debris, as the calculation example. The transition between vapor mechanism and plasma mechanism progressively changes with the increase of laser intensity. The ionization fraction is also increasing until the vapor is totallyionized. The impulse coupling coefficient increases at first, then reaches the maximum, and decreases at last. The optimum impulse coupling coefficient is obtained when the plasma mechanism dominates.
- laser ablation,
- impulse coupling coefficient,
- ionization fraction,
- space debris

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