Enhancement of the electron screening effect for fusion reactions in metallic environments
Institut für Atomare und Analytische Physik, Technische Universität Berlin
Sekr. PN 3-1, D-10623 Berlin, Germany
Accepted: 8 March 2001
To study the electron screening of nuclear reactions in metallic environments, angular distributions and thick target yields of the fusion reactions 2H(d,p)3H and 2H(d,n)3He have been measured on deuterons implanted in three different metal targets (Al, Zr and Ta) for beam energies ranging from 5 to 60 keV. The experimentally determined values of the screening energy are about one order of magnitude larger than the value achieved in a gas target experiment and significantly larger than the theoretical predictions. A clear target material dependence of the screening energy has been established.
PACS: 25.45.Hi – Transfer reactions / 95.30.-k – Fundamental aspects of astrophysics / 95.30.Dr – Atomic processes and interactions
© EDP Sciences, 2001