Fine structure in 14C cluster emission from 225Ac
M. Mirea
Institute of Physics and Nuclear Engineering, Tandem Lab., P.O.Box MG-6, Bucarest, Romania
Received: 31 July 1998 / Revised version: 27 November 1998 Communicated by D. Guerreau
Abstract
A fine structure in the 14C decay of 225Ac is
predicted quantitatively by accounting dynamical aspects
during the disintegration process. Transitions to the
excited states of the daughter nucleus are considered
to be mainly directed by the Landau-Zener promotion
mechanism in the region of avoided crossing levels.
The level scheme is evaluated with the superasymmetric
two-center shell model.
The half-lives are computed
considering the cluster decay as a superasymmetric fission process.
PACS
23.70.+j Heavy-particle decay -
21.60.Cs Shell model -
21.60.Gx Cluster models -
24.75.+i General properties of fission
Copyright Springer-Verlag
