Chinese Physics Letters
Mechanism of Separate Neutron and Proton Excitations in Interacting Neutron and Proton Boson Model and 168 Er Spectrum
Deng Weizhen, Yang Tsesen, Qi Hui
Abstract
We study the interacting neutron and proton boson model (IBM2) model without the assumption of the maxium F-spin truncation. Then we make a complete IBM2 calculation of the spectrum and E2 transitions to the 168 Er nucleus. Also from our simple condensate wavefunctions, we investigate a new mechanism of separate excitations of neutron and proton boson degrees.