Title: A shell model representation to describe radioactive decay

Speaker: Prof. Roberto J. Liotta, Royal Institute of Technology, Stockholm, Sweden

Time and place: 12:30, April 16 (Tuesday), 2013, Lecture Hall/INPAC

Abstract:

It is shown that the standard shell-model representation is inadequate to explain cluster decay processes due to a deficient asymptotic behavior of the corresponding single-particle wave functions. A new representation is proposed which is derived from a mean field consisting of the standard Woods-Saxon plus spin orbit potential of the shell-model, with an additional attractive pocket potential of a Gaussian form localized on the nuclear surface. The eigenvectors of this new mean field provide a representation which retains all the benefits of the standard shell model while at the same time reproducing well experimental absolute α-decay widths from heavy nuclei.