Nuclear Spectroscopy of Ca and Sc Isotopes from Inelastic Scattering and One-Nucleon Transfer Reactions on a Radioactive exp 41 Ca Target

摘要

The structure of energy levels in exp 40 , exp 42 Ca and exp 42 Sc has been studied using inelastic proton scattering and one-nucleon stripping and pick-up transfer reactions on a exp 41 Ca target. Data have given the following information on the properties of the exp 41 Ca ground state wave function; i) the exp 41 Ca (g.s.) looks very much like an f/sub 7/2/ neutron coupled to the exp 40 Ca (g.s.) core. ii) The core-excited component of the exp 41 Ca (g.s.) is determined to be 10 or less. It was inferred that the main constituents of the spectroscopic strength leading to the (f/sub 7/2/) exp 2 , (f/sub 7/2/p/sub 3/2/)/sub t=1/ and (f/sub 7/2/p/sub 1/2/)/sub T=1/ configurations have been identified. This was used to deduce the effective two-particle matrix elements for these configurations. The exp 42 Sc and exp 42 Ca data result in excellent agreement for the T=1 members of the (f/sub 7/2/) exp 2 multiplet while the (f/sub 7/2/p/)(/sub T=1/) matrix elements derived from the exp 42 Sc data are about 0.2 MeV more repulsive than those obtained from the exp 42 Ca data. The (f/sub 7/2/d/sub 3/2/ exp -1 ) matrix elements derived from the present ( exp 3 He, alpha ) data were compared to the corresponding values obtained from one-nucleon stripping to mass 34 nuclei. The two sets of matrix elements are in very good agreement. The exp 40 Ca values are also well reproduced by calculations using the modified surface delta interaction. The experimental spectroscopic factors to both the T=0 and T=1 states of the (f/sub7/2/) exp 2 multiplet are in remarkably good agreement with the predicted values of the coexistence model considering the simplicity of this model. (Atomindex citation 11:516243)