Angular momentum distributions forO16+144

Decay of 160Er* in 16O + 144Nd and 64Ni + 96Zr Fusion Reactions

“…[12] for the reactions 16 0 + 148 Sm and ^Ni + 100 Mo. It is shown that the model accounts well for the measured energy dependence of the average angular momentum in the 16 0 + 144 Nd and ^Ni + ^Zr reactions [14,15]. Employing the appropriate ^-distributions in the statistical model results in a good description of all features of the 160 Er* decay observed in the present work.…”

“…To avoid problems with consecutive unfoldings, which may not give unique solutions in the case of tails of distributions, we have opted for the following approach [11]. Through the use of a fusion model we produce compound nu cleus spin distributions (σ^) with parameters adjusted to fit measured fusion excitation functions for both reactions [14,15]. In the subsequent statistical model calculations, the entry-state (E*,I), and the (E*,M 7 ) distributions of each residue are obtained.…”

Measuring Barriers to Fusion

“…Prior to the introduction of the concept of the experimental barrier distribution and the first measured distributions, fusion excitation functions were thought to be smooth and featureless curves, providing a poor test of theoretical models (136,137). Since then, it has been demonstrated that in fact fusion excitation functions exhibit subtle structure that carries unique information on the interactions of the two nuclei at the fusion barrier.…”

Barrier distributions from the fusion of oxygen ions withSm144,148,154Leigh1, Dasgupta2, Hinde3 et al. 1995Phys. Rev. C404204222View full textAdd to dashboardCite

“…Such data yield poorly defined barrier distributions [15,16j and can therefore be equally well reproduced with models incorporating very different barrier distributions. Analyses of such data gave rise to a generally accepted belief that fusion excitation functions are smooth and featureless and do not provide a good test of models [17,18].When the cross sections have high precision (typically =~1 %) and are measured in small, precisely determined energy steps, the barrier distributions are well defined and they place more stringent limits on any models used.…”