Predicted features of the beta decay of neutronrich sdshell nuclei
Abstract
The GamowTeller betadecay transitions of sdshell nuclei with five or more excess neutrons are calculated from complete (0d_{52}, 1s_{12}, 0d_{32}) space shellmodel wave functions. These wave functions are obtained from diagonalizations of a model Hamiltonian formulation which reproduces observed energylevel structures throughout the sd shell. The calculations are carried out with both the "freenucleon" normalization for the GamowTeller singlenucleon matrix elements and one based on the empirical values obtained for these quantities from a comparison of corresponding theoretical and experimental GamowTeller magnitudes near the line of stability. The phasespace factors f which connect the reduced GamowTeller strengths to the total halflives and the individual decay probabilities are calculated both from the energies obtained in the shellmodel calculations and, alternatively, from hybrid energy spectra in which available experimental energies are substituted for the corresponding calculated values wherever possible. Comparisons of the betadecay predictions to existing experimental results are presented and discussed. RADIOACTIVITY Predictions of total halflives and decay probabilities to individual daughter states of the isotopes of O, F, Ne, Na, Mg, Al, Si, and P which have neutron excesses of five and greater; shellmodel calculations, complete 0d_{52}1s_{12}0d_{32} basis space, empirical sdshell Hamiltonian.
 Publication:

Physical Review C
 Pub Date:
 September 1983
 DOI:
 10.1103/PhysRevC.28.1343
 Bibcode:
 1983PhRvC..28.1343W