Open AccessThermodynamic properties of Coulomb crystals with isotopic impurities
Author(s) -
A. A. Kozhberov
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1400/2/022001
Subject(s) - impurity , coulomb , degenerate energy levels , binary number , perturbation theory (quantum mechanics) , mixing (physics) , ion , condensed matter physics , specific heat , physics , materials science , thermodynamics , quantum mechanics , mathematics , arithmetic , electron
This work is devoted to a description of Coulomb crystals with isotopic impurities which are expected to be formed in degenerate stars interiors. We consider the case when the mass of impurities M ′ is slightly different from the mass of ‘basic’ ions M while fraction of impurities can be arbitrary. It is shown that the heat capacity perturbation theory of disordered crystals is in a good agreement with the linear mixing theory and with the exact calculations for binary crystals.