A test for correction made to spin systematics for coupled band in doubly-odd nuclei

摘要

Systematic Spin Assignments were generally made by using the argument that the energy of levels is a function of neutron number. In the present systematics, the excitation energy of the levels incorporated the effect of nuclear deformation and signature splitting. The nuclear deformation changes toward the mid-shell, therefore a smooth variation in the excitation energy of the levels is observed towards the mid-shell, that intended to make systematics as a function of neutron number towards the mid-shell. Another term "signature splitting" that push the energy of levels for odd- and even-spin sequences up and down, caused the different energy variation pattern for odd- and even-spin sequences. The corrections made in the spin systematics were tested for the known spins of various isotopic chain. In addition, the inconsistency in spin assignments made by the spin systematics and other methods of the configuration pi h (11/2) aSu nu h (11/2) band belonging to Cs-112,Cs-114,Cs-116, Pr-126, and Pr-138, as an example, was resolved by the correctionmade in the present spin systematics.