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Observation of entrance channel effects in compound nucleus formation with high energy. gamma. -rays

Conference ·
OSTI ID:7187287
; ; ; ; ; ; ;  [1]; ;  [2];  [3]
  1. Oak Ridge National Lab., TN (USA)
  2. Washington Univ., St. Louis, MO (USA)
  3. Kernforschungsanlage Juelich GmbH (Germany, F.R)
+ Show Author Affiliations
We investigated entrance channel effects in the decay of excited {sup 160}Er and {sup 164}Yb, formed with {sup 16}O and {sup 64}Ni beams by measuring high energy (5--25 MeV) {gamma}-ray spectra. Gamma rays from the decay of the giant dipole resonance (GDR) built on highly excited states provide a good probe to study these effects, since the {gamma} rays are emitted in the early stages of the reaction. The {gamma}-ray spectra measured in the {sup 16}O-induced reactions show the typical GDR bump whereas the {gamma}-ray spectra from the more symmetric entrance channels show dramatically different shape. 22 refs., 5 figs., 2 tabs.
Research Organization:
Oak Ridge National Lab., TN (USA)
Sponsoring Organization:
DOE/ER
DOE Contract Number:
AC05-84OR21400
OSTI ID:
7187287
Report Number(s):
CONF-9005221-1; ON: DE90012162
Country of Publication:
United States
Language:
English

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Related Subjects

651720* -- Nuclear Properties & Reactions
A=90-149
Experimental
651820 -- Nuclear Properties & Reactions
A=150-189
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALPHA DECAY RADIOISOTOPES
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
COMPOUND NUCLEI
DATA
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ENERGY LEVELS
ERBIUM 160
ERBIUM ISOTOPES
EVEN-EVEN NUCLEI
EXCITED STATES
EXPERIMENTAL DATA
GAMMA SPECTRA
GIANT RESONANCE
HEAVY ION FUSION REACTIONS
HEAVY ION REACTIONS
HOURS LIVING RADIOISOTOPES
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
MOLYBDENUM 100
MOLYBDENUM ISOTOPES
NEODYMIUM 144
NEODYMIUM ISOTOPES
NICKEL 64 REACTIONS
NUCLEAR REACTIONS
NUCLEI
NUMERICAL DATA
OXYGEN 16 REACTIONS
RADIATIVE DECAY
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
RESONANCE
SAMARIUM 148
SAMARIUM ISOTOPES
SPECTRA
STABLE ISOTOPES
YEARS LIVING RADIOISOTOPES
YTTERBIUM 164
YTTERBIUM ISOTOPES
ZIRCONIUM 96
ZIRCONIUM ISOTOPES