Breakup Mechanism Features in the 27A1(14N,X) Reaction at Bombarding Energies up to 116 Mev

Abstract

Previous work on reaction mechanisms in light nuclear systems, in the energy range 4–10 MeV/n, suggested that a significant contribution to the nonfusion cross—section could be related to the deep inelastic collisions 1–3. One of the basic assumption concerning the deep inelastic process is the two-body character of the interaction 4. However recently it was shown, that three-body final state processes turned out to be important at bombarding energies close to 125 MeV for the 27Al(160,X) reaction 5. It was concluded on the basis of kinematic considerations, together with analysis of the inclusive energy spectra of reaction products, that the mechanism responsible for interaction is the direct breakup process5. In the present lecture,an evidence for three-body final state breakup, in the reaction 27Al(14N,X) at 116 MeV bombarding energy 10a is presented. Data at lower energy (55 MeV) are consistent on the other, side with a two-body final state breakup confirming the previous results9,measured at 62 MeV. It follows from these data that there is a transition with the rising energy from two-body to three-body final state in the considered reaction.The breakup process is a direct mechanism differing essentially from a deep inelastic process which is a delayed mechanism, favoring thedissipation of energy up to a full relaxation.KeywordsBreakup ProcessReaction 27AlDeep Inelastic CollisionOptical Model CalculationDeep Inelastic ProcessThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.