Published 2003 | Version v1
Miscellaneous Open

Disappearance of collective motion in hot nuclei

Creators

  • 1. INFN-LNS, Laboratori Nazionali del Sud, Catania (Italy)
  • 2. Institut de Physique Nucleaire, IN2P3-CNRS, 91 - Orsay (France)
  • 3. Catania Univ., Dipartimento di Fisica (Italy)

Description

The evolution of the GDR γ yield for excitation energies between 160 and 300 MeV has been investigated in nuclei of mass A ∼ 126 through the reactions 116Sn + 12C and 24Mg at 17 and 23 A*MeV. Gamma-rays were detected with MEDEA array in coincidence with residues detected in MACISTE. The evolution of the GDR parameters has been investigated as a function of the linear momentum transferred to the fused system. This procedure allowed us to select hot nuclei produced in incomplete fusion reactions with different excitation energies. The analysis of the γ spectra and their comparison with CASCADE calculations is presented. Results suggest a saturation of the GDR yield between 200 and 300 MeV excitation energy. (authors)

Availability note (English)

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Additional details

Publishing Information

Imprint Pagination
4 p.
Report number
INIS-FR--3165

Conference

Title
IWM2003 International Workshop on Multifragmentation and Related Topics
Dates
5-7 Nov 2003
Place
Caen (France)

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
36026476
Subject category
S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
Resource subtype / Literary indicator
Conference
Descriptors DEI
C CODES; CARBON 12 TARGET; COMPUTERIZED SIMULATION; GAMMA SPECTRA; GEV RANGE 01-10; GIANT RESONANCE; INCOMPLETE FUSION REACTIONS; MAGNESIUM 24 TARGET; TIN 116 REACTIONS
Descriptors DEC
COMPUTER CODES; ENERGY RANGE; GEV RANGE; HEAVY ION REACTIONS; NUCLEAR REACTIONS; RESONANCE; SIMULATION; SPECTRA; TARGETS

Optional Information

Notes
11 refs.