Molecular Dissociation in Hot, Dense Hydrogen

Дата и время публикации : 1996-01-24T20:37:14Z

Авторы публикации и институты :
W. R. Magro
D. M. Ceperley
C. Pierleoni
B. Bernu

Ссылка на журнал-издание: Ссылка на журнал-издание не найдена
Коментарии к cтатье: 5 pages, RevTeX + 4 figures, to appear in Physical Review Letters, online version available at http://www.tc.cornell.edu/~wmagro/
Первичная категория: cond-mat

Все категории : cond-mat

Краткий обзор статьи: We present a path-integral Monte Carlo study of dissociation in dense hydrogen ($1.75 leq r_s leq 2.2$, with $r_s$ the Wigner sphere radius). As temperature is lowered from $10^5$ to 5000 K, a molecular hydrogen gas forms spontaneously from a neutral system of protons and electrons. At high density, $r_s < 2.0$, thermally activated dissociation is accompanied by decreasing pressure, signaling the presence of a first order transition and critical point. The decrease in electron kinetic energy during dissociation is responsible for the pressure decrease and transition. At lower density the phase transition disappears.

Category: Physics