Equilibrio químico en un gas de hidrógeno magnetizado

G. M. VERA RUEDA; R. D. ROHRMANN

Congreso; Reunión Anual de la Asociación Argentina de Astronomía; 2018

We study the equilibrium of the ionization and dissociation of hydrogen in typical conditions of magnetic white dwarfs. Populations are obtained by the total Helmholtz free energy minimization of the gas, which includes contributions of free electrons and different atomic and molecular species (H, H, H, H, H). We take into account the effects of the magnetic field over traslational and internal energy modes of all the particles. The evaluation of the vibro-rotational partition function for molecules, includes an averaging over different field orientations. This model allows to evaluate populations of the different species for arbitrary values of temperature, gas density and magnetic field intensity (up to 10 G)