1,721,211 research outputs found
Thermodynamics and transport of high-density hydrogen plasma
No full textThe thermodynamic properties and transport coefficients of non-ideal, high-density hydrogen
plasma have been investigated, accounting for quantum effects due to the change in the energy
spectrum of atomic hydrogen when the the electron-proton interaction is considered embedded
in the surrounding particles. High-density conditions have been simulated assuming a simple
confined-atom model or atomic hydrogen subject to a screened Coulomb potential.
The ionization equilibrium is affected by the pressure
ionization phenomenon [1, 2]. In the case of Debye
plasma the influence of the plasma leads to a lowering
of the ionization energy and to an additional lowering
due to quantum effect on electronic levels. The electrical
conductivity (Fig. 1) exhibits a dependence on the total
(bound+free) electron density that mimics the ionization
degree profile, i.e. the minimum merging to the fully ionized
regime due to the Mott transition. The present results
have been compared with results in literature [3, 4], obtained
in the frame of different theories, finding significant
differences when the effect of the Debye screening
on atomic electronic levels is considered.
References
[1] D. Kremp, M., Schlanges, W. D. Kraeft, Quantum Statistic of Nonideal Plasmas in
Springer Series on Atomic, Optical and Plasma Physics 25 Springer, 2005.
[2] M. Capitelli, G. Colonna, A. D’Angola, Fundamental Aspects of Plasma Chemical
Physics: Thermodynamics, in Springer Series on Atomic, Optical, and Plasma Physics
66 Springer, 2012.
[3] M. Schlanges, D. Kremp, H. Keuer, Annalen der Physik 496, 54 (1984).
[4] H. Reinholz, R. Redmer, S. Nagel, Phys. Rev. E 52, 5368 (1995)
Coupling of Space-Dependent Electron Dynamics and Vibrational Kinetics in Radio-Frequency Discharges in Nitrogen
No full textStatistical thermodynamic description of H2 molecules in normal ortho/para mixture
No full textIn this paper, an expression for the internal partition function of normal hydrogen has
been obtained starting from the principles of classical statistical thermodynamics. The
calculated contribution applies to ideal gas properties. Particular attention has been
devoted to the entropy, which depends on the logarithm of the partition function.
Comparison between normal and equilibrium hydrogen together with theoretical and
experimental data available in literature has been discussed. Tables of the thermodynamic
properties of hydrogen and hydrogen ion are also reported
Capacitively coupled radio frequency discharge plasmas in hydrogen: particle modeling and negative ion kinetics
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State-to-state chemical kinetics and radiation transport in Nitrogen Atomic Plasma for Aerospace Applications (2008)
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State-to-state vibrational kinetics under non equilibrium conditions by direct Monte Carlo modelling
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