出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：In recent years, an enhanced electron screening in metallic environments has been demonstrated
by many groups in experimental investigations of low-energy nuclear reactions. Similarly, first
radioactive decay experiments in metallic materials have been performed to possibly observe an
alteration of the decay constant due to electron screening. Both kinds of experiments are of
fundamental importance for nuclear astrophysics since the metallic quasi-free electrons
represent a model for dense astrophysical plasmas and thus the corresponding theories can be
experimentally verified. Here, the experimental results determined for d+d fusion reactions will
be applied to propose a scaling procedure for electron screening energies in different metallic
materials. The results will be compared with the experimental values obtained for reactions with
heavier nuclei and some predictions for radioactive decay experiments will be presented.
Additionally, the temperature dependence of the screening energy will be discussed.
