Precompound decay calculations for reactions induced by 10--100 MeV/nucleon heavy ions
Journal Article
·
· Phys. Rev. C; (United States)
The Boltzmann master equation model has been applied to the question of precompound nucleon deexcitation of reactions induced by 10--100 MeV/nucleon (c.m.) heavy ions. Test systems of /sup 16/O+ /sup 60/Ni and /sup 27/Al+ /sup 86/Kr were selected. Experimental neutron spectra in coincidence with evaporation residue and fission fragments from the /sup 20/Ne+ /sup 165/Ho system (due to Holub et al.) were reproduced quite well by the master equation with exciton numbers between 20 and 23. Exciton values of projectile mass and projectile mass plus 3 were therefore used in the extrapolations of the master equation. Results show major fractions of the excitation and up to 35 nucleons removed during the coalescence-equilibration period. The linear momentum transfer predicted by the master equation is shown to be in good agreement with a broad range of data. Calculations are provided as to the range of angular momenta which may be carried off by the precompound cascade.
- Research Organization:
- Lawrence Livermore National Laboratory, University of California, Livermore, California 94550
- OSTI ID:
- 5885649
- Journal Information:
- Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 31:4; ISSN PRVCA
- Country of Publication:
- United States
- Language:
- English
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Thu Aug 01 00:00:00 EDT 1985
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Related Subjects
651615* -- Nuclear Properties & Reactions
A=59-89
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
653007 -- Nuclear Theory-- Nuclear Models-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALUMINIUM 27 REACTIONS
ANGULAR MOMENTUM
BOLTZMANN EQUATION
CHARGED-PARTICLE REACTIONS
COMPOUND-NUCLEUS REACTIONS
DIFFERENTIAL EQUATIONS
ENERGY RANGE
EQUATIONS
FERMI GAS
FLUIDS
GASES
GEV RANGE
GEV RANGE 01-10
HEAVY ION REACTIONS
KRYPTON 86 TARGET
MEV RANGE
MEV RANGE 100-1000
MOMENTUM TRANSFER
MULTIPLICITY
NICKEL 60 TARGET
NUCLEAR REACTIONS
OXYGEN 16 REACTIONS
PARTIAL DIFFERENTIAL EQUATIONS
PRECOMPOUND-NUCLEUS EMISSION
TARGETS
A=59-89
Theoretical-- Nuclear Reactions & Scattering-- (-1987)
653007 -- Nuclear Theory-- Nuclear Models-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALUMINIUM 27 REACTIONS
ANGULAR MOMENTUM
BOLTZMANN EQUATION
CHARGED-PARTICLE REACTIONS
COMPOUND-NUCLEUS REACTIONS
DIFFERENTIAL EQUATIONS
ENERGY RANGE
EQUATIONS
FERMI GAS
FLUIDS
GASES
GEV RANGE
GEV RANGE 01-10
HEAVY ION REACTIONS
KRYPTON 86 TARGET
MEV RANGE
MEV RANGE 100-1000
MOMENTUM TRANSFER
MULTIPLICITY
NICKEL 60 TARGET
NUCLEAR REACTIONS
OXYGEN 16 REACTIONS
PARTIAL DIFFERENTIAL EQUATIONS
PRECOMPOUND-NUCLEUS EMISSION
TARGETS