FLUCTUATION DYNAMICS OF FRAGMENTING SPHERICAL NUCLEI

被引:17
作者
DORSO, CO
BALONGA, PE
机构
[1] Departamento de Física, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires
来源
PHYSICAL REVIEW C | 1994年 / 50卷 / 02期
关键词
D O I
10.1103/PhysRevC.50.991
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
We use the quasiclassical nuclear model and the recently proposed early cluster recognition algorithm to investigate the dynamical evolution of the fragmentation pattern for suitably excited finite spherical spin-isospin symmetric system of 80 nucleons. We find that the asymptotic fragment structure (when clusters are far away from each other) is strongly related to the early most bound density fluctuations (MBDF's) in phase space (when the system is dense). We focus on the evolution of the microscopic structure of this MBDF, finding that the constituents of the MBDF are strongly correlated in time. Our calculations indicate that not only the final fragment spectra but also the microscopic structure of the final clusters carry information about the early stages of the evolution.
引用
收藏
页码:991 / 995
页数:5
相关论文
共 16 条
[1]   QUANTUM MOLECULAR-DYNAMICS - A DYNAMIC MICROSCOPIC N-BODY APPROACH TO INVESTIGATE FRAGMENT FORMATION AND THE NUCLEAR-EQUATION OF STATE IN HEAVY-ION COLLISIONS [J].
AICHELIN, J .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1991, 202 (5-6) :233-360
[2]   TRANSPORT-THEORY OF FLUCTUATION PHENOMENA IN NUCLEAR COLLISIONS [J].
AYIK, S ;
GREGOIRE, C .
NUCLEAR PHYSICS A, 1990, 513 (01) :187-204
[3]   LARGE RADIAL FLOW IN NUCLEUS-NUCLEUS COLLISIONS [J].
BAUER, W ;
BONDORF, JP ;
DONANGELO, R ;
ELMER, R ;
JAKOBSSON, B ;
SCHULZ, H ;
SCHUSSLER, F ;
SNEPPEN, K .
PHYSICAL REVIEW C, 1993, 47 (05) :R1838-R1841
[4]  
BAUER W, 1992, ANNU REV NUCL PART S, V42, P77
[5]   A GUIDE TO MICROSCOPIC MODELS FOR INTERMEDIATE ENERGY HEAVY-ION COLLISIONS [J].
BERTSCH, GF ;
DASGUPTA, S .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1988, 160 (04) :189-233
[6]   STATISTICAL MULTIFRAGMENTATION OF NUCLEI .2. APPLICATION OF THE MODEL TO FINITE NUCLEI DISASSEMBLY [J].
BONDORF, J ;
DONANGELO, R ;
MISHUSTIN, IN ;
SCHULZ, H .
NUCLEAR PHYSICS A, 1985, 444 (03) :460-476
[7]   STATISTICAL MULTIFRAGMENTATION OF NUCLEI .1. FORMULATION OF THE MODEL [J].
BONDORF, JP ;
DONANGELO, R ;
MISHUSTIN, IN ;
PETHICK, CJ ;
SCHULZ, H ;
SNEPPEN, K .
NUCLEAR PHYSICS A, 1985, 443 (02) :321-347
[8]   QUASI-CLASSICAL SIMULATION OF NUCLEAR-DYNAMICS - PHASE EVOLUTION OF DISASSEMBLING NUCLEI [J].
DORSO, C ;
RANDRUP, J .
PHYSICS LETTERS B, 1989, 232 (01) :29-36
[9]   EARLY RECOGNITION OF CLUSTERS IN MOLECULAR-DYNAMICS [J].
DORSO, C ;
RANDRUP, J .
PHYSICS LETTERS B, 1993, 301 (04) :328-333
[10]   MASTER LANGEVIN-EQUATIONS - ORIGIN OF ASYMPTOTIC DIFFUSION [J].
DORSO, CO ;
HERNANDEZ, ES ;
VEGA, JL .
PHYSICAL REVIEW E, 1993, 47 (01) :300-304