Quantum corrections to the particle distribution function and reaction rates in dense media

Quantum mechanics predicts the existence of power-law tails in the momentum distribution function of particles in dense media even under conditions of thermodynamic equilibrium. The generalized expressions allowing for the effect of the medium density show that quantum corrections lead to a sharp in...

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Bibliographic Details
Published in:Plasma physics reports 2005-02, Vol.31 (2), p.123-132
Main Authors: Starostin, A. N., Leonov, A. G., Petrushevich, Yu. V., Rerikh, Vl. K.
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ABSORPTION
ASYMMETRY
CORRECTIONS
DISTRIBUTION FUNCTIONS
EMISSION
EQUILIBRIUM
INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY
PLASMA
PLASMA DENSITY
QUANTUM MECHANICS
RADIATION TRANSPORT
REACTION KINETICS
RELAXATION
THERMODYNAMICS
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Summary:Quantum mechanics predicts the existence of power-law tails in the momentum distribution function of particles in dense media even under conditions of thermodynamic equilibrium. The generalized expressions allowing for the effect of the medium density show that quantum corrections lead to a sharp increase in the reaction rates of threshold exothermic processes (such as fusion and chemical reactions and vibrational-translational relaxation). The accompanying modification of the distribution function changes the wings of the emission and absorption lines. The profiles of the absorption lines in dense gaseous media are shown to be asymmetric with respect to the line center.
ISSN:1063-780X
1562-6938
DOI:10.1134/1.1866595