Evidence of Pre-Equilibrium {gamma}-Ray Emission in Heavy Ion Collisions at Intermediate Incident Energies

Conference · Fri Dec 31 00:00:00 EST 1999

OSTI ID:784998

Tudisco, S; Amorini, F; Cardella, G; Pietro, A Di; Figuera, P; Lanzalone, G; Musumarra, A; Papa, M; Pappalardo, G; Pirrone, S; Rizzo, F

The experimental results of {sup 40}Ca + {sup 48}Ca,{sup 40}Ca,{sup 46}Ti reactions are reported. The comparison between {gamma}-ray spectra measured in coincidence with fusion evaporation residues for the three colliding systems shows a clear evidence of pre-equilibrium {gamma}-rays emission in the region around 10 MeV. BNV simulations also predict this emission. The saturation of GDR strength with temperature has been found with some dependence on the colliding system.

• Research Organization: INFN-Laboratori Nazionali del Sud, Catania (IT); INFN-Sezione di Catania, Catania (IT); Dipartimento di Fisica, Universita di Catania, Catania (IT); Institute de Physique Nucleaire, IN2P3-CNRS, Orsay (FR)
• Sponsoring Organization: none (US)
• OSTI ID: 784998
• Report Number(s): ISBN 1-56396-907-6; ISSN 0094-243X; CODEN APCPCS; ISBN 1-56396-907-6; ISSN 0094-243X; CODEN APCPCS; TRN: US0109108
• Resource Relation: Conference: Experimental Nuclear Physics in Europe - ENPE 99: Facing the Next Millennium, Sevilla (ES), 06/21/1999--06/26/1999; Other Information: PBD: 31 Dec 1999
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
EVAPORATION
PRECOMPOUND-NUCLEUS EMISSION
GAMMA RADIATION
GAMMA SPECTRA
GIANT RESONANCE
DIPOLES
CALCIUM 40 REACTIONS
CALCIUM 40 TARGET
TITANIUM 46 TARGET
CALCIUM 48 TARGET
COINCIDENCE METHODS
MEV RANGE 100-1000