Yoshihiro Aritomo, Flerov Laboratory of Nuclear Reactions, JINR, Dubna, Russia
Mercredi 8 octobre 2008 à 10h30 - Salle des séminaires
The search for new elements is a long-standing important subject in nuclear physics. The existence of the Island of Stability in superheavy mass region has been predicted arount Z=114 and N=184 using the macroscopic-microscopic model. Recently, the production of new superheavy elements has been reported by GSI (Z=110,111 and 112), FLNR (Z=113,114,115,116 and 118) and RIKEN (Z=110,111,112 and 113). In the theoretical study in this field, the dynamical aspects of the fusion-fission mechanism have been investigated as a time evolution of the nuclear shape taking into account friction. The trajectory calculation in the nuclear deformation space using a stochastic equation is performed. To synthesize the superheavy nuclei, the shell structure of colliding nuclei plays a very important role . In this seminar, I focus on the effect of the shell structure in fusion process, and discuss the possibility of synthesizing new superheavy elements.
 Y. Aritomo, Nucl. Phys. A780 (2006) 222
Dans la même rubrique :