Speaker
Konrad Czerski
(Institute of Physics, University of Szczecin, Szczecin, Poland)
Description
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 self-consistent dielectric function theory will be applied to
determine electron screening energies in different metallic materials. The results
will be compared with the experimental values obtained for different nuclear
reactions and some predictions for radioactive decay experiments will be presented.
Furthermore, several solid state effects which can lead to an increase of the
screening energy will be discussed. Special interest will be devoted to the
temperature dependence of the electron screening effect.
Author
Konrad Czerski
(Institute of Physics, University of Szczecin, Szczecin, Poland)
Co-authors
Dr
Armin Huke
(Institut für Atomare Physik und Fachdidaktik, Technische Universität Berlin, Berlin, Germany)
Dr
Götz Ruprecht
(TRIUMF, Vancouver, Canada)
Prof.
Peter Heide
(Institut für Atomare Physik und Fachdidaktik, Technische Universität Berlin, Berlin, Germany)
