物理学报Issue(19)：334-340,7.DOI:10.7498/aps.62.195203
纳秒激光烧蚀冲量耦合数值模拟
Numerical simulation of nanosecond laser ablation impulse coupling
摘要
Abstract
To investigate the process and mechanism of the impulse generation of laser ablation target, a comprehensive model including one-dimensional heat conduction and fluid dynamics is developed. The target Al, the most common space debris material, is used based on the proposed numerical model in the calculation of ns laser pulse ablation impulse and impulse coupling coefficient as a function of time. Numerical results agree well with experimental data available. Numerical simulations show that, during the laser pulse the impulse the target gained increases greatly with time; after the laser pulse terminates, the impulse tends to be stable with time. In the process of laser impulse coupling, the laser ablation plasma expands into vacuum and its size also gradually increases;meanwhile the plasma plume absorbs the incident laser energy and leads to the reduction in the laser energy deposited onto the target.关键词
激光烧蚀/冲量耦合/等离子体Key words
laser ablation/impulse coupling/plasma引用本文复制引用
常浩,金星,陈朝阳..纳秒激光烧蚀冲量耦合数值模拟[J].物理学报,2013,(19):334-340,7.基金项目
国家自然科学基金(批准号:11102234)资助的课题 （批准号:11102234）
