Diffusive currents and Coulomb separation of ions in dense matter

16th Russian Youth Conference on Physics and Astronomy

物理学;天文学

Beznogov, M.V.^1 ; Yakovlev, D.G.^2

St. Petersburg Academic University, 8/3 Khlopina Street, St. Petersburg

194021, Russia^1

Ioffe Physical Technical Institute, 26 Politekhnicheskaya, St. Petersburg

194021, Russia^2

关键词: Charge number;    Coulomb couplings;    Dense matter;    Diffusion currents;    Diffusive currents;    Neutron stars;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/572/1/012001/pdf
DOI  :  10.1088/1742-6596/572/1/012001

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

We derive diffusive currents in strongly coupled Coulomb ion mixtures in dense stellar matter. Coulomb coupling in the presence of gravity and electric fields, induced by gravity owing to plasma polarization, creates a specific diffusion current which separates ions with the same A/Z (mass to charge number ratios) but different Z. This Coulomb separation can be important in white dwarfs and neutron stars.