New Experimental Constraints on the Electron Screening Effect in Astrophysical Plasma

Abstract

Study of the d+d reactions at very low energies in metallic environments in the terrestrial laboratories, enables us to determine the strength of the screening effect in the strongly coupled astrophysical plasma in stars. So far, experimentally determined screening energies were extremely high in comparison to the theoretical predictions, and the reason for the observed discrepancies remained unrecognized. New measurements of the electron screening effect in 2 H(d, p) 3 H and 2 H(d, n) 3 H reactions at energies from 6 to 25 keV were performed in zirconium under ultra-high * Speaker.