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脉冲激光烧蚀块状靶材的双动态界面研究
引用本文:张端明,李智华,黄明涛,张美军,关丽,邹明清,钟志成.脉冲激光烧蚀块状靶材的双动态界面研究[J].物理学报,2001,50(5):914-920.
作者姓名:张端明  李智华  黄明涛  张美军  关丽  邹明清  钟志成
作者单位:华中科技大学[主校区]物理系,武汉430074
基金项目:华中科技大学激光技术国家重点实验室基金(批准号:9713D)资助的课题.
摘    要:给出脉冲激光作用块状靶材的烧蚀模型.根据能量平衡原理,导出烧蚀面的位置随时间的变化关系.利用绝热近似、温度连续性条件和能量平衡原理来获得烧蚀面与固液相界面边界条件.结合热传导方程,利用精确解与积分近似法相结合的方案,给出固液两相的温度分布与时间和位置的变化关系,以及固液相界面的位置随时间的变化规律,并与已有的理论和实验结果进行比较.最后以铝靶为例计算模拟了激光烧蚀的全过程计算. 关键词: 脉冲激光 等离子体 固液相界面 烧蚀面

关 键 词:脉冲激光  等离子体  固液相界面  烧蚀面
收稿时间:2000-11-25
修稿时间:2000年11月25

STUDY ON THE TWIN DYNAMIC INTERFACES OF BULK TARGET IRRIDIATED BY PULSED LASER
ZHANG Duan-Ming,LI ZHI-HUA,HUANG Ming-Tao,ZHANG Mei-jun,GUAN LI,ZOU MING-QING,ZHONG Zhi-cheng.STUDY ON THE TWIN DYNAMIC INTERFACES OF BULK TARGET IRRIDIATED BY PULSED LASER[J].Acta Physica Sinica,2001,50(5):914-920.
Authors:ZHANG Duan-Ming  LI ZHI-HUA  HUANG Ming-Tao  ZHANG Mei-jun  GUAN LI  ZOU MING-QING  ZHONG Zhi-cheng
Abstract:The ablating model of a bulk target irradiated by a pulse laser is set up.Using the simple energy balance considerations,the relationship of the ablating surface's location with the time is derived.By adiabatic approximation,the continuous-temperature condition and conservation of energy,we find out all the boundary conditions.By using the combination of analytical method and integral-approximation method,and solving the heat flow equation,the temperature distribution of soild and liquid phases' as functions of time and location are obtained,the interface of solid and liquid phase is also derived.In addition,the results are compared with other published data.Finally,most of the calculated results present are on excimer-laser irradiated target Al,although the calculations can be easily extended to laser irradiation of other targets.
Keywords:pulse laser  plasma  interface of the liquid and solid phase  ablating surface
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