R. Giordano

The extended elastic model II applied to the reactions2H(d, n)3He,2H(d, p)3H

SummaryRecent fusion cross-section data for the reaction2H(d, n)3He2H(d, p)3H are compared with the predictions of the, «extended elastic model II». A comparison with cluster-impact fusion results is also given.

Analysis of α scattering from23Mg at 12.5 MeV in terms of the coupled-channel calculation

SummaryAngular distributions relative to elastic and inelastic (1/2+ at 0.59 MeV, 3/2+ at 0.97 MeV, 7/2+ at 1.61 MeV and 5/2+ at 1.96 MeV) scattering of α-particles from25Mg have been measured in the energy range (12.1 ÷ 12.9) MeV in steps of 50 keV. The experimental data have been analysed in terms of the statistical and nonspherical optical model. The direct contribution to the cross-section has been calculated with the coupledv formalism. Excitations of rotational bands built on different single-particle states have been taken into account.RiassuntoSono state misurate le distribuzioni angolari relative alla diffusione elastica ed anelastica (1/2+ a 0.59 MeV, 3/2+ a 0.97 MeV, 7/2+ a 1.61 MeV e 5/2+ a 1.96 MeV) di particelle α. da25Mg nell’intervallo di energia (12.1 ÷ 12.9) MeV a passi di 50 keV. I dati sperimentali sono stati analizzati in termini di modello statistico e di modello ottico non sferico, usando il formalismo dei canali acooppiati. Sono state considerate eccitazioni di bande rotazionali basate su differenti stati di particella singola.РезюмеВ области энергий (12.1 /12.9) МэВ с шагом 50 кэВ измерены угловые распределения упругого и неупругого (1/2+ при 0.59 МэВ, 3/2+ при 0.97 МэВ, 7/2+ при 1.61 МэВ и 5/2+ при 1.96 МэВ) рассеяний а-частиц на25Mg. Экспериментальные данные анализируются в терминах статистической и несферической оптической моделей. Вычисляется прямой вклад в поперечное сечение с помощью формализма связанных каналов. Учитываются возбуждения ротационных зон, построенных с помощью различных одночастичных состояний.