Coupled-Reaction-Channel Approach for Molecular Orbital Phenomena of Valence Nucleons in Heavy Ion Collisions. The sup 12 C + sup 13 C System

摘要

A complete coupled-reaction-channel method is applied to molecular orbital phenomena of the valence nucleon in the scattering of sup 12 C on sup 13 C, i.e., in elastic and inelastic transitions to the single particle states of sup 13 C*(gr.1/2 exp - ; 3.086MeV,1/2 exp + ; 3.854MeV,5/2 exp + ) with the consideration of sup 12 C- core exchange process. The system is analyzed with respect to the occurence of higher order transitions of the direct (inelastic) and transfer (core-exchange) processes of the valence nucleon in sup 13 C. It is found that in the state of positive total parity the transfer and direct processes act additively and lead to extreme higher order steps of the multi-interactions, if the ground state (1p1/2) and the excited states (2s1/2 and 1d5/2) are taken into account. Transitions between the excited subchannels show strong coupling effects, which are due to the reorientations of the d5/2 orbitals. The reoriented system couples to the ground channel (l-parity mixing) so favourably that the multi-interaction series hardly converges. The consequence of these observations are discussed in terms of the formation of molecular nucleon orbitals based on the polarization and the hybridization of the original orbitals. (Atomindex citation 16:012500)