A. Y. Potekhin, G. Chabrier
We study the plasma correlation effects on nonresonant thermonuclear
reactions of carbon and oxygen in the interiors of white dwarfs and liquid
envelopes of neutron stars. We examine the effects of electron screening on
thermodynamic enhancement of thermonuclear reactions in dense plasmas beyond
the linear mixing rule. Using these improved enhancement factors, we calculate
carbon and oxygen ignition curves in white dwarfs and neutron stars. The energy
balance and ignition conditions in neutron star envelopes are evaluated, taking
their detailed thermal structure into account. The result is compared to the
simplified "one-zone model," which is routinely used in the literature. We also
consider the effect of strong magnetic fields on the ignition curves in the
ocean of magnetars.
View original:
http://arxiv.org/abs/1201.2133
No comments:
Post a Comment