Influence of entrance channel properties on heavy-ion reaction dynamics

Autor:	Annette Berriman, David Hinde, Mahananda Dasgupta, John Newton, A. Mukherjee, Rachel D Butt, Clyde Morton
Rok vydání:	2002
Předmět:	Nuclear reaction Physics Nuclear and High Energy Physics Fusion Reaction dynamics Potential energy surface Degrees of freedom (physics and chemistry) Nuclear fusion Atomic physics Nuclear Experiment Threshold energy Excitation
Zdroj:	The European Physical Journal A. 13:149-154
ISSN:	1434-601X 1434-6001
DOI:	10.1140/epja1339-27
Popis:	In the fusion of heavy nuclei, there is a distribution of fusion barrier energies resulting from coupling between intrinsic motion and internal degrees of freedom. Precise experimental measurements of excitation functions have allowed the extraction of the distributions by taking the second derivative using a point-difference method. In the case of statically deformed nuclei, experimental data shows that the different fusion barrier energies correspond to different physical configurations of the colliding nuclei, the latter affecting the subsequent dynamical trajectories over the potential energy surface, influencing the ultimate reaction products, as for example in quasi-fission. The fusion barrier distribution is also valuable in understanding the fusion of weakly bound nuclei, enabling a reliable prediction of the expected fusion cross-sections, and thus the determination of fusion suppression factors at above-barrier energies.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::55a226f1c4ebf82e49844e7a699c62d5 https://doi.org/10.1140/epja1339-27 Zobrazit plný text záznamu Full text from SpringerLink