Eur. Phys. J. A 14, 191-197 (2002)
DOI: 10.1140/epja/i2001-10196-9

Formation and decay of super-heavy systems

Toshiki Maruyama^{1, 2}, A. Bonasera¹, M. Papa^{1, 3} and S. Chiba<sup>2

1</sup>  Istituto Nazionale di Fisica Nucleare-Laboratorio Nazionale del Sud, Via Santa Sofia 44, Catania 95123, Italy
²  Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195, Japan
³  Istituto Nazionale di Fisica Nucleare-Sezione di Catania, Corso Italia 57, Catania 95129, Italy

maru@hadron02.tokai.jaeri.go.jp
bonasera@lns.infn.it
papa@lns.infn.it
chiba@hadron31.tokai.jaeri.go.jp

(Received: 13 December 2001 / Revised version: 5 March 2002 Communicated by P. Schuck)

Abstract
We investigate the formation and the decay of heavy systems which are above the fission barrier. By using a microscopic simulation of constrained molecular dynamics (CoMD) on collision, we observe that composite states stay for a very long time before decaying by fission.

PACS
24.10.Lx - Monte Carlo simulations (including hadron and parton cascades and string breaking models).
25.70.-z - Low and intermediate energy heavy-ion reactions.
25.70.Jj - Fusion and fusion-fission reactions.
25.70.Lm - Strongly damped collisions.

© Società Italiana di Fisica, Springer-Verlag 2002