Fine structure in 14C cluster emission from 225Ac
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
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.
23.70.+j Heavy-particle decay - 21.60.Cs Shell model - 21.60.Gx Cluster models - 24.75.+i General properties of fission