MULTI-FRAGMENT PRODUCTION IN THE 32S+58,64NiREACTIONS AT 11 A MeV

Fizika B (Zagreb)

F. GRAMEGNA¹  U. ABBONDANNO¹  A. NANNINI,A. ORDINE¹  F. TONETTO¹  A. LANCHAIS¹  P. F.MASTINU¹  M. CHIARI,M. D'AGOSTINO¹  R. A. RICCI¹  A. MORONI¹  G. CASINI¹  A. BONASERA,M. BRUNO¹  L. VANNUCCI¹  S. CAVALLARO¹  L. TRAVAGLINI,G. VANNINI¹  P. M. MILAZZO¹  G. V. MARGAGLIOTTI¹ 

关键词: heavy ions;    multi-fragmentation;    nuclear phase transition;   

DOI  :  

学科分类：物理（综合）

来源: Fizika B: a journal of experimental and theoretical physics

【 摘 要 】

The characteristic features of the ³²S+^58,64Ni reaction at11 A MeV have been investigated to evidence the possible rise ofmulti-fragmentation processes at low excitation energies. The importance of such phenomenaconsists in the fact that they could represent the signature of a nuclear phase transitionfrom a liquid to a gas region. Evidence of multi-fragment production is displayed by thepresent data; even if the yield of such events is compatible with the predictions ofstatistical models, the partition of the mass of the decaying system cannot be easilyreproduced. Some preliminary indications of isospin effects are suggested by looking atthe differences between the two reacting systems.

【 授权许可】

Unknown