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Title: Characteristics of plasma generated by hypervelocity impact

Abstract

The characteristics of plasma generated by hypervelocity impact were studied through both theoretical analysis and numerical simulation. Based on thermodynamics and statistical physics, a thermal ionization model was proposed to explore the relationships of ionization degree and plasma conductivity to temperature with consideration of the velocity distribution law in the thermodynamic equilibrium state. In order to derive the temperature, internal energy, and density of the plasma generated by the impact for the above relationships, a 3-D model for the impact of an aluminum spherical projectile on an aluminum target was established and five cases with different impact angles were numerically simulated. Then, the temperature calculated from the internal energy and the Thomas Fermi (TF) model, the internal energy and the density of the plasma were put into the function of the ionization degree to study the characteristics of plasma. Finally, based on the experimental data, a good agreement was obtained between the theoretical predictions and the experimental results, and the feasibility of this theoretical model was verified.

Authors:
; ;  [1]
  1. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081 (China)
Publication Date:
OSTI Identifier:
22220635
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 20; Journal Issue: 9; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALUMINIUM; COMPUTERIZED SIMULATION; DISTRIBUTION; ELECTRON TEMPERATURE; EQUILIBRIUM; ION TEMPERATURE; NUMERICAL ANALYSIS; PLASMA DENSITY; PLASMA SIMULATION; THERMODYNAMICS; THOMAS-FERMI MODEL

Citation Formats

Song, Weidong, Li, Jianqiao, and Ning, Jianguo. Characteristics of plasma generated by hypervelocity impact. United States: N. p., 2013. Web. doi:10.1063/1.4819829.
Song, Weidong, Li, Jianqiao, & Ning, Jianguo. Characteristics of plasma generated by hypervelocity impact. United States. https://doi.org/10.1063/1.4819829
Song, Weidong, Li, Jianqiao, and Ning, Jianguo. 2013. "Characteristics of plasma generated by hypervelocity impact". United States. https://doi.org/10.1063/1.4819829.
@article{osti_22220635,
title = {Characteristics of plasma generated by hypervelocity impact},
author = {Song, Weidong and Li, Jianqiao and Ning, Jianguo},
abstractNote = {The characteristics of plasma generated by hypervelocity impact were studied through both theoretical analysis and numerical simulation. Based on thermodynamics and statistical physics, a thermal ionization model was proposed to explore the relationships of ionization degree and plasma conductivity to temperature with consideration of the velocity distribution law in the thermodynamic equilibrium state. In order to derive the temperature, internal energy, and density of the plasma generated by the impact for the above relationships, a 3-D model for the impact of an aluminum spherical projectile on an aluminum target was established and five cases with different impact angles were numerically simulated. Then, the temperature calculated from the internal energy and the Thomas Fermi (TF) model, the internal energy and the density of the plasma were put into the function of the ionization degree to study the characteristics of plasma. Finally, based on the experimental data, a good agreement was obtained between the theoretical predictions and the experimental results, and the feasibility of this theoretical model was verified.},
doi = {10.1063/1.4819829},
url = {https://www.osti.gov/biblio/22220635}, journal = {Physics of Plasmas},
issn = {1070-664X},
number = 9,
volume = 20,
place = {United States},
year = {Sun Sep 15 00:00:00 EDT 2013},
month = {Sun Sep 15 00:00:00 EDT 2013}
}