Abstract
The influence of atomic and conductivity electrons in the metal matrices on the -decay rate is analyzed. The Coulomb interaction of inner atomic electrons and free electrons with the nuclei is treated in the adiabatic approximation and as a shake-off process, respectively. The role of conductivity electrons is analyzed in the framework of strict collision theory. Simple formulas are derived for the exponential tunneling probability in the approximation of a short tunneling path compared to characteristic electronic dimensions. It is shown that the pre-exponential factor in the decay rate depends on the energy absorbed by electrons during decay, whereas is independent of it. The half-life of the nucleus surrounded by electrons is a bit larger than that of the bare nucleus.
- Received 9 July 2014
- Revised 8 October 2014
DOI:https://doi.org/10.1103/PhysRevC.90.054619
©2014 American Physical Society