Numerical simulation of nanosecond laser ablation and plasma characteristics considering a real gas equation of state

doi:10.1088/2058-6272/ac2815

	Numerical simulation of nanosecond laser ablation and plasma characteristics considering a real gas equation of state
	Liu, Qiang 1; Min, Qi 1,2,3; Su, Maogen 1,2,3; Liu, Xingbang 1; Cao, Shiquan 1,2,3; Sun, Duixiong 1,2,3; Dong, Chenzhong 1,2,3; Fu, Yanbiao 1,2,3
刊名	PLASMA SCIENCE & TECHNOLOGY
	2021-12-01
卷号	23 期号:12 页码:9
关键词	ns-laser ablation hydrodynamic model Knudsen layer equation of state
ISSN号	1009-0630
DOI	10.1088/2058-6272/ac2815
通讯作者	Min, Qi(mq_lpps@nwnu.edu.cn) ; Fu, Yanbiao(fuyb@nwnu.edu.cn)
英文摘要	Based on the governing equations which include the heat conduction equation in the target and the fluid equations of the vapor plasma, a two-dimensional axisymmetric model for ns-laser ablation considering the Knudsen layer and plasma shielding effect is developed. The equations of state of the plasma are described by a real gas approximation, which divides the internal energy into the thermal energy of atoms, ions and electrons, ionization energy and the excitation energy of atoms and ions. The dynamic evolution of the silicon target and plasma during laser ablation is studied by using this model, and the distributions of the temperature, plasma density, Mach number related to the evaporation/condensation of the target surface, laser transmissivity as well as internal energy of the plasma are given. It is found that the evolution of the target surface during laser ablation can be divided into three stages: (1) the target surface temperature increases continuously; (2) the sonic and subsonic evaporation; and (3) the subsonic condensation. The result of the internal energy distribution indicates that the ionization and excitation energy plays an important role in the internal energy of the plasma during laser ablation. This model is suitable for the case that the temperature of the target surface is lower than the critical temperature.
资助项目	National Key Research and Development Program of China[2017YFA0402300] ; National Natural Science Foundation of China[11904293] ; National Natural Science Foundation of China[12064040] ; National Natural Science Foundation of China[11874051] ; Science and technology project of Gansu Province[20JR5RA530] ; Young Teachers Scientific Research Ability Promotion Plan of Northwest Normal University[NWNU-LKQN-18-32] ; Funds for Innovative Fundamental Research Group Project of Gansu Province[20JR5RA541]
WOS关键词	RADIATION ; EVOLUTION ; DYNAMICS
WOS研究方向	Physics
语种	英语
出版者	IOP Publishing Ltd
WOS记录号	WOS:000706853800001
资助机构	National Key Research and Development Program of China ; National Natural Science Foundation of China ; Science and technology project of Gansu Province ; Young Teachers Scientific Research Ability Promotion Plan of Northwest Normal University ; Funds for Innovative Fundamental Research Group Project of Gansu Province
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/136183]
专题	中国科学院近代物理研究所
通讯作者	Min, Qi; Fu, Yanbiao
作者单位	1.Northwest Normal Univ, Coll Phys & Elect Engn, Key Lab Atom & Mol Phys & Funct Mat Gansu Prov, Lanzhou 730070, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730070, Peoples R China 3.Northwest Normal Univ, Joint Lab Atom & Mol Phys, Lanzhou 730070, Peoples R China
推荐引用方式 GB/T 7714	Liu, Qiang,Min, Qi,Su, Maogen,et al. Numerical simulation of nanosecond laser ablation and plasma characteristics considering a real gas equation of state[J]. PLASMA SCIENCE & TECHNOLOGY,2021,23(12):9.
APA	Liu, Qiang.,Min, Qi.,Su, Maogen.,Liu, Xingbang.,Cao, Shiquan.,...&Fu, Yanbiao.(2021).Numerical simulation of nanosecond laser ablation and plasma characteristics considering a real gas equation of state.PLASMA SCIENCE & TECHNOLOGY,23(12),9.
MLA	Liu, Qiang,et al."Numerical simulation of nanosecond laser ablation and plasma characteristics considering a real gas equation of state".PLASMA SCIENCE & TECHNOLOGY 23.12(2021):9.