Limits of collective motion in hot nuclear matter

Journal Article · Mon Sep 28 00:00:00 EDT 1987 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.59.1409· OSTI ID:6012807

Gaardhoje, J J; Bruce, A M; Garrett, J D; Herskind, B; Barneoud, D; Maurel, M; Nifenecker, H; Pinston, J A; Perrin, P; Ristori, C; others, and

High-energy ..gamma..-ray spectra have been measured in coincidence with products from the reaction /sup 40/Ar+ /sup 70/Ge at 15 and 24 MeV/nucleon. The evolution of the giant dipole resonance (GDR) is studied as a function of excitation energy (E/sup */). Up to E/sup */approx. =300 MeV the measured GDR strength is consistent with full collectivity. At higher E/sup */ a strong inhibition of the GDR ..gamma.. decay is observed. At the highest transition energies, the spectra are consistent with bremsstrahlung emission associated with nucleon-nucleon collisions.

• Research Organization: The Niels Bohr Institute, University of Copenhagen, Copenhagen 2100, Denmark
• OSTI ID: 6012807
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 59:13; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

651520* -- Nuclear Properties & Reactions
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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ARGON 40 REACTIONS
CHARGED-PARTICLE REACTIONS
DATA
ENERGY RANGE
EXPERIMENTAL DATA
GAMMA SPECTRA
GERMANIUM 70 TARGET
GIANT RESONANCE
HEAVY ION REACTIONS
INFORMATION
MATTER
MEV RANGE
MEV RANGE 10-100
NUCLEAR MATTER
NUCLEAR REACTIONS
NUMERICAL DATA
RESONANCE
SPECTRA
TARGETS