Abstract
The 6Li( 6Li, p) 11B and 6Li( 6Li, n) 11C reactions to particle stable states have been investigated at beam energies from E = 2–16 MeV. The excitation functions and angular distributions of the respective neutron and proton groups are quite similar. The excitation functions for some final states ( 1, 4 5 , 7, 8, 10 11 ) are structureless while others (0, 2, 3, 6, 9) exhibit pronounced resonances. The presence or absence of resonances is explained with the aid of a correlation diagram obtained within the framework of a diabatic two-center shell model. Resonances are attributed to the emission of a nucleon with angular momentum of l′ = 3 which has been promoted from a 1 p 3 2 orbit of 6Li into a 1 f 7 2 orbit of 12C while the other eleven nucleons combine to particle stable final states with J π = 3 2 −, 5 2 − and 5 2 + . Amplitudes of wave functions like | 11 B∗⊗ π 1 f 7 2 〉 or | 11 C∗ ⊗ ν 1 f 7 2 〉 are suggested to act as doorway configurations in the process of fusion at certain beam energies.
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