COLLISIONS OF DEFORMED-NUCLEI - A PATH TO THE FAR SIDE OF THE SUPERHEAVY ISLAND

Citation
A. Iwamoto et al., COLLISIONS OF DEFORMED-NUCLEI - A PATH TO THE FAR SIDE OF THE SUPERHEAVY ISLAND, Nuclear physics. A, 596(2), 1996, pp. 329-354
Citations number
25
Categorie Soggetti
Physics, Nuclear
Journal title
ISSN journal
03759474
Volume
596
Issue
2
Year of publication
1996
Pages
329 - 354
Database
ISI
SICI code
0375-9474(1996)596:2<329:COD-AP>2.0.ZU;2-C
Abstract
A detailed understanding of complete fusion cross sections in heavy-io n collisions requires a consideration of the effects of the deformatio n of the projectile and target. Our aim here is to show that deformati on and orientation of the colliding nuclei have a very significant eff ect on the fusion-barrier height and on the compactness of the touchin g configuration. To facilitate discussions of fusion configurations of deformed nuclei, we develop a classification scheme and introduce a n otation convention for these configurations. We discuss particular def ormations and orientations that lead to compact touching configuration s and to fusion-barrier heights that correspond to fairly low excitati on energies of the compound systems. Such configurations should be the most favorable for producing superheavy elements. We analyze a few pr ojectile-target combinations whose deformations allow favorable entran ce-channel configurations and whose proton and neutron numbers lead to compound systems in a part of the superheavy region where alpha half- lives are calculated to be observable, that is, longer than 1 mu s.