Electron screening effect on stellar thermonuclear fusion

Abstract

We study the impact of plasma correlation effects on nonresonant thermonuclear reactions for various stellar objects, namely in the liquid envelopes of neutron stars, and the interiors of white dwarfs, low-mass stars, and substellar objects. We examine in particular the effect of electron screening on the enhancement of thermonuclear reactions in dense plasmas within and beyond the linear mixing rule approximation as well as the corrections due to quantum effects at high density. In addition, we examine some recent unconventional (Yukawa-potential and "quantum-tail") theoretical results on stellar thermonuclear fusions and show that these scenarios do not apply to stellar conditions.

9 pages, 4 figures; Proceedings of the 14th International Conference on Physics of Nonideal Plasmas "PNP-14" (9-14 September 2012, Rostock, Germany)

References in corpus (4)

• Fusion reactions in multicomponent dense matter
• Subtracted dispersion relation formalism for the two-photon exchange correction to elastic electron-proton scattering: comparison with data
• A simple analytic model for astrophysical S-factors
• Nuclear fusion reaction rates for strongly coupled ionic mixtures

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• Plasma screening of nuclear fusion reactions in liquid layers of compact degenerate stars: a first-principle study
• Revisiting the Gamow Factor of Reactions on Light Nuclei
• Relativistic Coulomb Screening in Pulsational Pair Instability Supernovae