The role of Debye-Huckel electronic energy levels on the thermodynamic properties of hydrogen plasmas including isentropic coefficients

被引：23
作者：
Capitelli, M. [1 ]
Giordano, D. [2 ]
Colonna, G. [3 ]
机构：
[1] Univ Bari, Dipartmento Chim, Bari, Italy
[2] ESA ESTEC, Noordwijk, Netherlands
[3] CNR IMIP, Bari Sect, I-70125 Bari, Italy
来源：
PHYSICS OF PLASMAS | 2008年 / 15卷 / 08期
关键词：
D O I：
10.1063/1.2967490
中图分类号：
O35 [流体力学]; O53 [等离子体物理学];
学科分类号：
070204 ; 080103 ; 080704 ;
摘要：
A comparison between frozen, reactive, and total specific heats calculated by using energy levels derived from Coulomb and Debye-Huckel potentials is reported. Results for hydrogen plasmas in local thermodynamic equilibrium show that the use of Debye-Huckel energy levels increases the frozen specific heat of the mixture up to 40% as compared with the corresponding quantities obtained by using Coulomb energy levels, having an opposite effect on the reactive specific heat. The total specific heat of the plasma (the sum of frozen and reactive contributions) is less affected due to compensation effects. Results for the isentropic coefficient gamma=c(p)/c(v) show a similar trend and warn on neglecting the electronic excitation in this coefficient. (C) 2008 American Institute of Physics.
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页数：9
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