Spectroscopic factors and E3 transition rates in 39K

Structure of doorway states in the40Ca+n reaction

“…As in our previous study of the 39K system [10], the properties of the core Hamiltonian H c were derived from the experimental spectrum of 4~ [6]. The interaction Hamiltonian involved a quadrupole-quadrupole and octupole-octupole interaction, and the single particle energies corresponded to the centroids of bound single particle states in 41Ca [11].…”

“…We therefore concentrate on calculation of s-wave resonances and hence on 1/2 + entrance channels using our predicted J=l/2 + state distribution in the 4tCa bound state region as a test of the model. We first describe the bound state model for the positive parity states in 41Ca as resulting from a combination of collective excitation of the 4~ core, for which there is ample experimental [6] and theoretical evidence [7,8] In the particle-core coupling Hamiltonian used [9,10] H= H,, + Hr + Hint + H2body.…”