عنوان دوره: اولین دوره بین المللی و بیست و هشتمین دوره ملی (1400)

In this paper, the -based transitional Hamiltonians are extended by adding a 2p-2h excitation term to describe some intruder levels of 166Dy nucleus. We used the quantum numbers of U(5) and O(6) dynamical limits to label different levels of this nucleus and control the effect of each symmetry by a control parameter. Our results for and intruder levels are in satisfactory agreement with experimental counterparts. Also, the results of this extended formalism improve the theoretical predictions for normal states in comparison with non-perturbed Hamiltonian.

intruder states؛ transitional Hamiltonian؛ particle- hole excitation