THERMODYNAMIC PROPERTIES OF PARTIALLY IONIZED HYDROGEN PLASMA

This paper considers dense partially ionized hydrogen plasma. The model of interaction between particles was used to study properties of plasma. Interaction potentials were obtained through the dielectric response function method. Effective potentials, taking into account the screening effects at large distances and the quantum-mechanical diffraction effect at small distances, were used to model the interaction between particles. Another effective screening potential was chosen to describe the charge interaction with neutral atoms. This potential takes into account the interaction between free charge and atomic nucleus with centrally symmetric distribution of the electron density. The degree of ionization was calculated through solving the system of Saha equations. Pair correlation functions were studied in the exponential approximation. Thermodynamic properties for hydrogen plasma were calculated using the effective potentials and obtained on their base pair correlation functions. Internal energy and equation of state of partially ionized hydrogen plasma were compared with the results from previous research. The results indicated that the difference observed with high values of parameters was due to increase in the concentration of atoms.

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THERMODYNAMIC PROPERTIES OF HYDROGEN PLASMA

CBU International Conference Proceedings ◽

10.12955/cbup.v5.1082 ◽

2017 ◽

Vol 5 ◽

pp. 1124-1127

Author(s):

Maratbek Gabdullin ◽

Tlekkabul Ramazanov ◽

Tomiris Ismagambetova ◽

Alexander Tikhonov

Keyword(s):

Thermodynamic Properties ◽

Correlation Functions ◽

Hydrogen Plasma ◽

Pair Correlation ◽

Thermodynamic Characteristics ◽

Interaction Potentials ◽

Pair Correlation Functions ◽

Quantum Mechanical Effects ◽

Symmetry Effect ◽

Chain Approximation

In this paper dense hydrogen plasma, which is of considerable interest in both theoretical and practical areas such as non-ideal plasma encountered in thermonuclear reactors, is considered. The structural and thermodynamic properties of dense non-ideal hydrogen plasma were investigated. Potentials taking into account the quantum-mechanical effects of diffraction and symmetry have been used as a model of interaction. The symmetry effect was considered for the different directions of spin of electrons. Pair correlation functions have been obtained in the solution for the integral equation of the Ornstein-Zernike in hyper-netted chain approximation on the basis of the interaction potentials. Thermodynamic properties for hydrogen plasma were calculated using the interaction potentials and pair correlation functions. The quantum symmetry effect weakens the interaction between the charged particles leading to a decrease in the absolute value of the non-ideal part of the thermodynamic characteristics of the dense plasma. The symmetry effect is more pronounced for higher values of density.

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Effective interaction potential of dust particles in a plasma from experimental pair correlation functions

Journal of Plasma Physics ◽

10.1017/s002237780999016x ◽

2009 ◽

Vol 76 (1) ◽

pp. 57-66 ◽

Cited By ~ 10

Author(s):

T. S. RAMAZANOV ◽

K. N. DZHUMAGULOVA ◽

T. T. DANIYAROV ◽

Yu. A. OMARBAKIYEVA ◽

S. K. KODANOVA ◽

...

Keyword(s):

Correlation Functions ◽

Effective Interaction ◽

Pair Correlation ◽

Dust Particles ◽

Pair Correlation Functions ◽

Effective Potentials ◽

The Poisson Equation ◽

Validity Range ◽

Experimental Pair ◽

Macroscopic Parameters

AbstractInteraction between dust particles in a plasma is investigated on the basis of experimental pair correlation functions of dust formation in a dc glow discharge and the Poisson equation. It is shown that the calculated effective potentials have an oscillating character and depend rather weakly on macroscopic parameters of the plasma. Existence of an attractive component in the interaction of dust particles is confirmed within the validity range of our model.

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