出版社:SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要:The experimental study of low-energy deuteron fusion reactions in metallic environments shows the importance of the electron screening effect. Experimentally determined screening energies are remarkably higher than predicted theoretically. This discrepancy becomes even larger for the first ultra-high vacuum (UHV) experiment. Thus, a question arises whether the strongly enhanced electron screening originates from plasma or solid-state physics. Here, we present a possible explanation of exceptionally high experimental screening energies based on an additional contribution coming from a narrow resonance state placed close to the reaction threshold.