Exploration of electron and ion thermodynamic models in laser-plasma expansion
文献类型：期刊论文
| 作者 | Hu Y(胡远)1,2; Huang ZL(黄子霖)1,2; Cao, Yong4; Sun QH(孙泉华)1,2; Huang HJ(黄河激)1,2; Ding, Chengyuan5; Wang Z(王展)1,2,3 |
| 刊名 | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
 |
| 出版日期 | 2025-09-01 |
| 卷号 | 68期号:9页码:12 |
| 关键词 | LPP expansion nonequilibrium suprathermal electron non-adiabatic ion thermodynamics |
| ISSN号 | 1674-7348 |
| DOI | 10.1007/s11433-024-2645-2 |
| 通讯作者 | Wang, Zhan(zwang@imech.ac.cn) |
| 英文摘要 | The expansion of laser-produced plasma (LPP), an important process to be understood to design the debris mitigation system of an extreme ultraviolet (EUV) light source, is governed by its associated electron and ion thermodynamics, the modeling of which is, however, a subject of debate. By applying the polytropic equation of state (EoS) for both electron and ion, we have derived the hydrodynamic-based self-similar solutions for an expanding plasma slab with finite ion temperature. The effects of electron and ion thermodynamics on plasma expansion and ion acceleration are investigated. We show that the unusual negative-correlation thermodynamic model for electrons in the hydrodynamic description of plasma expansion is an outcome of the interactions between the electrons following a nonequilibrium kappa distribution and the inherent plasma-induced electric field from a kinetic point of view. The comparisons between the self-similar solutions and the recent experiment data reveal that the electron is better characterized by the nonequilibrium kappa-based thermodynamic model with suprathermal population than the common equilibrium Boltzmann one. For thermal-ion expansion, it is found that the polytropic index for ion thermodynamics (gamma i) is about 2, in contrast to gamma i = 3 for the adiabatic assumption made in earlier studies. |
| 分类号 | 一类 |
| WOS关键词 | SELF-SIMILAR EXPANSION ; HIGH-ENERGY IONS ; POLYTROPIC RELATIONSHIP ; VACUUM ; ACCELERATION ; SIMULATION ; DENSITY ; MASS |
| 资助项目 | Strategic Priority Research Program of the Chinese Academy of Sciences[XDA0380602] ; National Natural Science Foundation of China[12325207] |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001476242200001 |
| 资助机构 | Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China |
| 其他责任者 | 王展 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/101133]  |
| 专题 | 力学研究所_高温气体动力学国家重点实验室 |
| 作者单位 | 1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 2.Chinese Acad Sci, State Key Lab High Temp Gas Dynam, Inst Mech, Beijing 100190, Peoples R China; 3.Chinese Acad Sci, Key Lab Mech Fluid Solid Coupling Syst, Inst Mech, Beijing 100190, Peoples R China; 4.Harbin Inst Technol Shenzhen, Dept Mech Engn & Automat, Shenzhen 518055, Peoples R China; 5.Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China |
| 推荐引用方式 GB/T 7714 | Hu Y,Huang ZL,Cao, Yong,et al. Exploration of electron and ion thermodynamic models in laser-plasma expansion[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2025,68(9):12. |
| APA | 胡远.,黄子霖.,Cao, Yong.,孙泉华.,黄河激.,...&王展.(2025).Exploration of electron and ion thermodynamic models in laser-plasma expansion.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,68(9),12. |
| MLA | 胡远,et al."Exploration of electron and ion thermodynamic models in laser-plasma expansion".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 68.9(2025):12. |
入库方式： OAI收割
来源：力学研究所
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