Nonstationary laser-supported ionization wave in layer of porous substance with subcritical density
作者机构：P.N.Lebedev Physical Institute of Russian Academy of SciencesLeninskii Prospect 53Moscow 119991Russia
出 版 物：《Matter and Radiation at Extremes》 (极端条件下的物质与辐射（英文）)
年 卷 期：2024年第9卷第1期
页 面：58-70页
核心收录：
学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0703[理学-化学] 0803[工学-光学工程]
基 金：National Center for Physics and Mathematics
摘 要：A time-dependent analytical solution is found for the velocity of a plane ionization wave generated under nanosecond laser pulse action on the surface of a flat layer of low-Z porous substance with density less than the critical density of the produced *** corrections for the two-dimensional nature of the problem when a laser beam of finite radius interacts with a flat target,this solution is in quantitative agreement with measurements of ionization wave velocity in various *** solution compared with experimental data covering wide ranges of performance conditions,namely,(3-8)×10^(14)W cm^(−2)for laser pulse intensity,0.3-3 ns for pulse duration,0.35-0.53μm for laser wavelength,100-1000μm for laser beam radius,380-950μm for layer thickness,4.5-12 mg cm^(−3)for average density of porous substance,and 1-25μm for average pore *** parameters of the laser beam that ensure the generation of a plane ionization wave in a layer of subcritical porous matter are determined for the problem statements and are found to meet the requirements of practical applications.
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