High Lying Two-Neutron Hole States in exp 206 Pb and exp 114 SN Via the ( Alpha , exp 6 He) Reaction at 218MeV

摘要

Strong enhancements of two neutron hole states are observed for the first time in the ( alpha , exp 6 He) reaction study at 218 MeV on exp 208 Pb and exp 114 Sn target nuclei. Selective population of high-spin states, characteristic patterns of the angular distributions and successful direct one step analysis of the data are the main attractive features of the ( alpha , exp 6 He) process at high incident energy. As illustrative examples, spin and configurations of levels or structures in exp 206 Pb and exp 114 Sn are reported. (Atomindex citation 14:716697)