Elastic transfer processes in heavy ion scattering

Evidence for a parity dependence of the ?+20Ne interaction

“…The picture which emerges from this discussion is not dissimilar from that obtained by yon Oertzen and collaborators in their description of elastic transfer between similar mass nuclei (see [23] and references therein); there also the odd-even staggering of the elastic scattering S-matrix elements found necessary to describe the data results from a coherent superposition of a smooth-cutoff component and of a gaussian-like contribution centered near the grazing angular momentum [24]. This mechanism has been shown through explicit DWBA cluster transfer calculations to underlie the backangle behavior seen, e.g., in the 12C+ 160 elastic scattering angular distributions [25].…”

On the resonant behavior of the16O+15N reaction

“…The to dominate, L = 16 and 18 forms fit rather well the data and these assignments can thus be made to the resonances at Ecl~j= 22.7 and 26.8 MeV, respectively. These dominant even L-values are the result of the parity dependent effects [7,8] shown to be important in collisions between almost identical nuclei and also observed recently for resonances reported in 14C + L2C and 14C + 160 [2].…”

Measurement of spin-alignment of excited12C2+ nuclei in interactions of16O with12C usingγ-decay in flight

“…These results showed that at intermediate energies resonances occur, which are partially coupled to excited states of ~2C and/or 1 ~O; large contributions from the decay of compound states have to be considered for certain energy ranges. The four nucleon transfer aspect of this reaction has been discussed repeatedly by many authors [7,19,20]. At higher energy, actually a large part (if not the main part) can be attributed to four nucleon transfer.…”

“…An appropriate approach would be a coupled channel calculation for the inelastic scattering with a parity dependent optical potential [19] or an explicit inclusion of the four nucleon transfer channel (see for example [20]). …”