Investigation of the one-step direct contribution to the 28Si(18O, 18F)28Al reaction at 19.6 MeV/nucleon

A Constrained Analysis of the 40Ca(18O,18F)40K Direct Charge Exchange Reaction Mechanism at 275 MeV

“…It is worthwhile to emphasize that the above-mentioned calculations are based on a quite involved approach, starting from microscopic nuclear response functions, combined with freespace nucleon-nucleon interactions to derive the transition form factors and fixing ion-ion ISI and FSI by elastic scattering and inelastic scattering. The advantage of such a demanding program is evident from the fact that the data are quite well-described without the need to introduce additional scaling factors, as it was found necessary in the former heavy-ion-induced SCE reactions on the same target such as the 40 Ca( 7 Li, 7 Be) 40 K reaction at 35 MeV (Williams-Norton et al, 1979) or the pioneering studies on ( 18 O, 18 F) on different targets (Kim et al, 1979;Horen et al, 1986;Fifield et al, 1993).…”

“…Not much is known about the ( 18 O, 18 F) SCE reaction, which is discussed in the present paper. Such a probe has been studied on the 28 Si and 36 S targets from 3 to 19.6 A MeV (Kim et al, 1979;Horen et al, 1986;Fifield et al, 1993). In all cases, a significant role of the direct mechanism has been deduced, especially at the highest beam energies, but uncertainties in the adopted models for the nuclear structure and reaction inputs did not allow to draw any firm conclusion.…”