Deexcitation of primary projectile-like fragments in the reaction [sup 40]Ca+[sup nat]Cu at 35 MeV/nucleon: Comparison with sequential binary decay and percolation models

Journal Article · Sat Oct 01 00:00:00 EDT 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.50.1973· OSTI ID:7004847

Lleres, A; Cole, A J; Desesquelles, P; Giorni, A; Heuer, D; Viano, J B ^[1]; Chambon, B; Cheynis, B; Drain, D; Pastor, C ^[2]

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1. Institut des Sciences Nucleaires, IN2P3-CNRS et Universite Joseph Fourier, 53 Avenue des Martyrs, F-38026 Grenoble Cedex (France)
2. Institut de Physique Nucleaire, IN2P3-CNRS et Universite Claude Bernard, 43 Boulevard du 11 Novembre 1918, F-69622 Villeurbanne Cedex (France)

This article presents a new analysis of primary projectile-like fragments produced in peripheral and mid-peripheral collisions in the reaction [sup 40]Ca+[sup nat]Cu at 35 MeV/nucleon. The data were obtained using the charged particle AMPHORA array. The distributions of multiplicity, inclusive charge, and heaviest fragment charge of the deexcitation products as well as the moments characterizing the single event charge partitions are remarkably well reproduced by a statistical sequential binary decay model even up to excitation energies of more than 8 MeV/nucleon. The results produced by the sequential binary decay model and a simple bond percolation model are qualitatively very similar. However the sequential binary decay mechanism leads to charge fluctuations which are in better agreement with the data than those predicted by the percolation model.

• OSTI ID: 7004847
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Vol. 50:4; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CALCIUM 40 REACTIONS
FRAGMENTATION
COPPER 63 TARGET
COPPER 65 TARGET
DE-EXCITATION
CHARGES
DISTRIBUTION
FLUCTUATIONS
GEV RANGE 01-10
CHARGED-PARTICLE REACTIONS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
GEV RANGE
HEAVY ION REACTIONS
NUCLEAR REACTIONS
TARGETS
VARIATIONS
663450* - Heavy-Ion-Induced Reactions & Scattering- (1992-)
663550 - Nuclear Mass Ranges- A=59-89- (1992-)
663300 - Nuclear Reactions & Scattering
General- (1992-)