Reaction mechanisms and their interaction time in dissipative heavy-ion collisions

Journal Article · Tue May 01 00:00:00 EDT 1990 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.41.2062· OSTI ID:7095596

De Rosa, A; Fioretto, E; Inglima, G; Romoli, M; Sandoli, M; Setola, R ^[1]; Cardella, G; Papa, M; Pappalardo, G; Rizzo, F; Wang, Q ^[2]; Napoli, D R; Scarlassara, F; Segato, G F; Signorini, C; Stefanini, A M ^[3]

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1. Dipartimento di Scienze Fisiche Universita di Napoli Federico II Istituto Nazionale di Fisica Nucleare, Sezione di Napoli, Pad. 20 Mostra d'Oltremare, Napoli, (Italy)
2. Dipartimento di Fisica Universita di Catania Istituto Nazionale di Fisica Nucleare, Sezione di Catania, Corso Italia, 57 Catania, (Italy)
3. Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, Legnaro, Padova, (Italy)

Angular distributions of fragments emitted in the reaction {sup 19}F+{sup 63}Cu measured in the range {theta}{sub lab}=10{degree} to 120{degree} at incident energy between 100 to 108 MeV (lab) have been analyzed according to available models for deep inelastic collisions with the aim to evidence different mechanisms contributing to such reactions. The analysis was performed in the framework of Strutinsky model taking into account both the development of Kun and of Abul-Magd and Simbel. To determine the interaction times, previously published excitation functions were also analyzed in the framework of Kun's model of cross section statistical fluctuations and near-side and far-side scattering were taken into account separately. It was pointed out that the rotational energy dissipation occurs in a limited angular range around the grazing angle. The presence of two distinct reaction mechanisms, each of them characterized by an interaction time, was also evidenced by comparing the energy averaged angular distributions to the Abul-Magd and Simbel model for dissipative collisions.

• OSTI ID: 7095596
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Vol. 41:5; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
COPPER 63 TARGET
FLUORINE 19 REACTIONS
NUCLEAR FRAGMENTATION
ANGULAR DISTRIBUTION
DEEP INELASTIC SCATTERING
EXCITATION FUNCTIONS
MEV RANGE 100-1000
NUCLEON-NUCLEON INTERACTIONS
TIME MEASUREMENT
BARYON-BARYON INTERACTIONS
CHARGED-PARTICLE REACTIONS
CROSS SECTIONS
DISTRIBUTION
ENERGY RANGE
FUNCTIONS
HADRON-HADRON INTERACTIONS
HEAVY ION REACTIONS
INELASTIC SCATTERING
INTERACTIONS
LEPTON-BARYON INTERACTIONS
LEPTON-HADRON INTERACTIONS
LEPTON-NUCLEON INTERACTIONS
MEV RANGE
NUCLEAR REACTIONS
PARTICLE INTERACTIONS
SCATTERING
TARGETS
651620* - Nuclear Properties & Reactions
A=59-89
Experimental