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The isentropic exponent of non-local thermal equilibrium plasmas
Institution:1. Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands;2. FOM Institute for Plasma Physics ‘Rijnhuizen’, P.O. Box 1207, 3430 BE Nieuwegein, The Netherlands;1. University of Science and Technology (UST), 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Republic of Korea;2. Korea Institute of Machinery and Materials, 156 Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, Republic of Korea;1. National Fusion Research Institute, Daejeon, Republic of Korea;2. Korea Atomic Energy Research Institute, Daejeon, Republic of Korea;1. Department of Applied Physics, Dankook University, Yongin-si 448-701, Gyeonggi-do, Republic of Korea;2. Nuclear Materials Division, Korea Atomic Energy Research Institute, 989-111 Daedeok-daero,Yuseong-gu, Daejeon 305-353, Republic of Korea;1. Institute of Plasma Physics, Chinese Academy of Sciences, Hefei, 230031, China;2. Science Island Branch of Graduate, University of Science & Technology of China, Hefei, 230031, China;3. Institute of Metal Research, Chinese Academy of Sciences, Shenyang, 110016, China
Abstract:For non-equilibrium atmospheric mono-atomic plasmas the isentropic exponent is 1.2 for a large range of ionization degrees. The asymptotic dependence of the non-equilibrium parameters on the electron density is included. The small freedom of deviations from equilibrium expresses that the plasma tends to remain close to its equilibrium.
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