Dynamical effects and intermediate mass fragment production in peripheral and semicentral collisions of Xe+Sn at 50 MeV/nucleon

Journal Article · Tue Apr 01 00:00:00 EST 1997 · Physical Review, C

OSTI ID:544255

Lstrok,; ukasik, J; Plagnol, E; Bacri, C O; Borderie, B; Dore, D; Parlog, M; Rivet, M F; Squalli, M; Tassan-Got, L ^[1]; Benlliure, J; Auger, G; Chbihi, A; Le Fevre, A; Marie, N; Politi, O; Saint-Laurent, F; Wieleczko, J P ^[2]; Metivier, V; Tamain, B ; Bougault, R; Brou, R; Colin, J; Cussol, D; Durand, D; Lecolley, J F; Lefort, T; Lopez, O; Louvel, M; Peter, J; Rosato, E; Steckmeyer, J C; Vient, E ^[3]; Bisquer, E; Demeyer, A; Gerlic, E; Guinet, D; Lautesse, P; Stern, M ^[4]; Buchet, P; Charvet, J L; Dayras, R; Legrain, R; Nalpas, L; Volant, C; Colonna, M ^[5]; Assenard, M; Germain, S; Gourio, D; Laville, J L; Rahmani, A; Reposeur, T; Haddad, F; Eudes, P; Sami, T; Sebille, F ^[6]

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1. IPN, IN2P3-CNRS, F-91406 Orsay Cedex (France)
2. GANIL, CEA, IN2P3-CNRS, B.P. 5027, F-14021 Caen Cedex (France)
3. LPC, IN2P3-CNRS, ISMRA et Universite, F-14050 Caen Cedex (France)
4. IPN Lyon, IN2P3-CNRS et Universite, F-69622 Villeurbanne Cedex (France)
5. CEA, DAPNIA/SPhN, CEN Saclay, F-91191 Gif sur Yvette Cedex (France)
6. SUBATECH, IN2P3-CNRS/EMN/Universite, F-44070 Nantes Cedex 03 (France)

Experimental data obtained with the 4{pi} multidetector system INDRA are used to study the light charged particle (LCP, Z{le}2) and intermediate mass fragment (IMF, Z{ge}3) production in peripheral and semicentral collisions of Xe and Sn at 50 MeV/nucleon. It is found that a sizable fraction of the detected LCP`s and IMF`s originates from the midvelocity region. These fragments can be seen to come either from a prompt (preequilibrium) mechanism or from a slower but dynamically influenced emission process. The relative magnitude of the dynamically influenced emission relative to the isotropic statistical evaporation is presented as a function of the transverse energy of light particles, used as an impact parameter selector. The results are compared to dynamical models with which a good agreement is obtained. {copyright} {ital 1997} {ital The American Physical Society}

• OSTI ID: 544255
• Journal Information: Physical Review, C, Vol. 55, Issue 4; Other Information: PBD: Apr 1997
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
XENON
HEAVY ION REACTIONS
TIN
PARTICLE PRODUCTION
NUCLEAR FRAGMENTATION
EXPERIMENTAL DATA
CHARGED PARTICLES
NUCLEAR FRAGMENTS
MASS
VELOCITY
EQUILIBRIUM
EMISSION
EVAPORATION
TRANSVERSE ENERGY
IMPACT PARAMETER
HEAVY ION FUSION REACTIONS