Abstract
In certain neutron-rich Te isotopes, a decrease in the energy of the first excited state is accompanied by a decrease in the strength to that state from the ground state, contradicting simple systematics and general intuition about quadrupole collectivity. We use a separable quadrupole-plus-pairing Hamiltonian and the quasiparticle random phase approximation to calculate energies, strengths, and g factors for the lowest states near We trace the anomalous behavior in the Te isotopes to a reduced neutron pairing above the magic gap.
- Received 21 August 2002
DOI:https://doi.org/10.1103/PhysRevC.66.054313
©2002 American Physical Society