Abstract
The intermediate-coupling shell model predicts a level with spin in at excitation energy of about 12 MeV, its main configuration being . Experimental evidence for this level is limited at present to observation only in - inelastic scattering. In order to investigate further possibilities for observing this level, nuclear direct interactions with various nucleon-cluster transfers are examined in detail. In particular, the spectroscopic-factor amplitudes in the deuteron reduced width for the ground state of leading to all the available configurations of are calculated by making use of the harmonic-oscillator shell model; it is found that the spectroscopic factor leading to is quite large. Direct-interaction mechanisms are discussed in some detail, mainly from the kinematical standpoint (i.e., polology), and partly from the standpoint of nuclear-cluster structure. As a result, it is conjectured that the reaction will proceed predominantly through the transfer process. It is then concluded that the lowest level of could be most easily observed in the reaction at higher energy (∼15-20-MeV deuterons).
- Received 23 March 1967
DOI:https://doi.org/10.1103/PhysRev.161.1099
©1967 American Physical Society