Saturation of the width of the giant dipole resonance at high temperature

Journal Article · Mon May 01 04:00:00 EDT 1989 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.62.2080· OSTI ID:6166913

Bracco, A; Gaardhoeje, J J; Bruce, A M; Garrett, J D; Herskind, B; Pignanelli, M; Barneoud, D; Nifenecker, H; Pinston, J A; Ristori, C; others, and

The ..gamma..-ray spectrum in the giant dipole resonance (GDR) region associated with the reaction /sup 40/Ar+/sup 70/Ge at 10 MeV/nucleon has been measured in coincidence with residues of the heavy composite systems whose excitation energy was E/sup */ = 230 MeV. From the statistical-model analysis, it is deduced that the GDR strength is consistent with 100% of the energy-weighted sum rule, the energy is 16 +- 1 MeV while the width is 13/sub -2//sup +1/ MeV. This value is not very different from the one measured at E/sup */ = 130 MeV, thus pointing to saturation effects in the damping of the GDR.

• Research Organization: The Niels Bohr Institute, University of Copenhagen, Copenhagen 2100 Oe, Denmark
• OSTI ID: 6166913
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 62:18; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

651620* -- Nuclear Properties & Reactions
A=59-89
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ARGON 40 REACTIONS
BETA DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
DATA
DIPOLE MOMENTS
ELECTRON CAPTURE RADIOISOTOPES
ENERGY LEVELS
ENERGY RANGE
EVEN-EVEN NUCLEI
EXCITED STATES
EXPERIMENTAL DATA
GAMMA SPECTRA
GERMANIUM 70 TARGET
GIANT RESONANCE
HEAVY ION FUSION REACTIONS
HEAVY ION REACTIONS
HOURS LIVING RADIOISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
MEV RANGE
MEV RANGE 100-1000
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
RADIOISOTOPES
RESONANCE
SPECTRA
TARGETS
TIN 110
TIN ISOTOPES