Entrance and Exit Channels for Very Heavy and Superheavy Elements
Abstract
The fusion barriers experimentally investigated as well as the α and fission exit channels for superheavy elements have been determined within a Generalized Liquid Drop Model including the proximity effects, the asymmetry, an accurate nuclear radius and an adjustment to reproduce the experimental Q value. Double-hump fusion barriers appear in cold fusion reactions and, then, possible fast-fission events in the external well while warm fusion reactions lead to one peak potential barriers and to excited nuclei. The moment of emission of the excess neutrons or even an α particle is crucial to decide between complete fusion and fast fission.
- Publication:
-
Nuclear Physics at Border Lines
- Pub Date:
- January 2002
- DOI:
- 10.1142/9789812778321_0047
- Bibcode:
- 2002npbl.conf..289R