Charge and mass distributions in strongly damped reactions of sup 58 Ni+ sup 165 Ho at 16 MeV/nucleon

Journal Article · Mon Oct 01 00:00:00 EDT 1990 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.42.1489· OSTI ID:6058041

Penumetcha, V; Petitt, G A ^[1]; Awes, T C; Beene, J R; Ferguson, R L; Obenshain, F E; Plasil, F; Young, G R ^[2]; Sorensen, S P ^[3]

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1. Department of Physics and Astronomy, Georgia State University, Atlanta, GA (USA)
2. Oak Ridge National Laboratory, Oak Ridge, TN (USA)
3. Department of Physics and Astronomy, University of Tennessee, Knoxville, TN (USA) Oak Ridge National Laboratory, Oak Ridge, TN (USA)

Secondary charge and mass distributions have been measured for projectilelike fragments (PLF's) in strongly damped reactions of {sup 58}Ni+{sup 165}Ho at 16 MeV per nucleon bombarding energy. Statistical model evaporation calculations were compared with these distributions and with neutron multiplicities and temperatures for PLF and targetlike fragments (TLF's) to obtain the primary distributions prior to light-particle emission. The deduced primary distributions indicate a net transfer of protons to the target in contrast to the predictions of the nucleon transport exchange model, which predicts a net transfer of neutrons to the projectile. The results suggest an equal division of the available excitation energy at small total kinetic-energy (TKE) losses (up to 200 MeV) with thermal energy division occurring only at the largest TKE losses ({approx}325 MeV).

• DOE Contract Number: FG05-84ER40162; AC05-84OR21400
• OSTI ID: 6058041
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Vol. 42:4; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
HOLMIUM 165 TARGET
NICKEL 58 REACTIONS
NUCLEAR FRAGMENTATION
CHARGE DISTRIBUTION
COMPOUND-NUCLEUS REACTIONS
EVAPORATION MODEL
IONIZATION CHAMBERS
KINETIC ENERGY
MASS SPECTRA
MEV RANGE 100-1000
MULTIPLICITY
MULTIWIRE PROPORTIONAL CHAMBERS
NEUTRONS
STATISTICAL MODELS
BARYONS
CHARGED-PARTICLE REACTIONS
ELEMENTARY PARTICLES
ENERGY
ENERGY RANGE
FERMIONS
HADRONS
HEAVY ION REACTIONS
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MEV RANGE
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEONS
PROPORTIONAL COUNTERS
RADIATION DETECTORS
SPECTRA
TARGETS
651820* - Nuclear Properties & Reactions
A=150-189
Experimental