Two-step processes in the 40Ca(α, 3He)41Ca reaction |
| |
Authors: | S Fortier JM Maison P Picot S Galès E Hourani JP Schapira |
| |
Institution: | Institut de Physique Nucléaire, BP no 1, 91406 Orsay, France |
| |
Abstract: | The 40Ca(α, 3He) reaction has been studied at 36 MeV incident energy. About fifty levels have been observed up to 7.1 MeV excitation energy and angular distributions were measured from 6–60° using a split-pole spectrometer. A local zero-range DWBA analysis has been carried out, and the deduced l-assignments and spectroscopic factors are compared with those obtained from previous neutron stripping experiments. Core-excited states in 41Ca with a 3? ? f7,2], 2+ ? f7,2] and 5? ? f7,2] component previously observed in inelastic scattering experiments, are selectively excited by the (α, 3He) reaction. Their angular distributions are compared with coupled-reaction-channel calculations, assuming a pure two-step reaction mechanism. The agreement between theory and experiment may be considered as rather satisfactory for a number of levels. In particular the levels and the high-spin states with are successfully described within the framework of the weak-coupling model. |
| |
Keywords: | Nuclear Reactions |
本文献已被 ScienceDirect 等数据库收录! |
|