[Activities of Nuclear Physics Lab., Washington University]

Details [Activities of Nuclear Physics Lab., Washington University] [Activities of Nuclear Physics Lab., Washington University]

Apr 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999stin...0265355.&link_type=abstract

Technical Report, DE2002-762169 Nuclear Physics Lab.

Physics

Atomic Physics

Astrophysics, Atomic Physics, Nuclear Physics, Research And Development, Gravitational Lenses, Solar Neutrinos, Radiation Detectors, Beta Particles, Particle Decay, Heavy Ions, Neutron Emission, Gamma Ray Bursts

Scientific paper

The Nuclear Physics Laboratory at the University of Washington in Seattle pursues a broad program of nuclear physics research. Research activities are conducted locally and at remote sites. The current program includes 'in-house' research on nuclear collisions using the local tandem Van de Graaff and superconducting linac accelerators as well as local and remote non-accelerator research on fundamental symmetries and weak interactions and user-mode research on relativistic heavy ions at large accelerator facilities around the world. Our results on hot Giant Dipole Resonance decay reverse longstanding conventional wisdom that the GDR width saturates at moderate excitation energy. We show, based on new pre-equilibrium and GDR decay measurements, together with a reanalysis of previous experiments, that the GDR width does not saturate, but appears to continue growing with excitation energy (temperature) in accord with theoretical expectations. These experiments are fundamental to understanding hot nuclear matter, in particular how normal modes of nuclear oscillation survive at high temperatures.

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