Limits to complete fusion and the evolution of nuclear reaction mechanisms in the E/A = 10-100 MeV energy regime
With the advent of new intermediate-energy accelerators which produce beams of complex projectiles with energies in the range of E/A = 20-100 MeV, a new area of research in heavy-ion physics has opened. A description of the dominant reaction mechanisms in intermediate energy collisions has been the main goal of this research dissertation. Three major experimental efforts are reported in this work: (1) Inclusive measurements of linear momentum transfer in the /sup 14/N + /sup 238/U and p + /sup 238/U reactions were done, using the technique of angular correlations between fission fragments. (2) Coincidences between light charged particles and binary fission fragments in the 150 MeV /sup 6/Li + /sup 238/U and 60,13,200,270 MeV /sup 3/H + /sup 238/U reactions were measured to investigate major mechanisms of energy loss in the initial non-equilibrium phase of the reaction. (3) Coincidences between intermediate mass fragments (3 less than or equal to Z less than or equal to 7) and fission fragments were measured in the 270 MeV /sup 3/He + /sup 238/Th reaction. The mechanism of target fragmentation and its role in non-equilibrium energy loss in the reaction was investigated with this technique.
- Research Organization:
- Indiana Univ., Bloomington (USA)
- OSTI ID:
- 6706978
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
A=220 & above
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR CORRELATION
BARYON REACTIONS
CHARGED-PARTICLE REACTIONS
COINCIDENCE METHODS
CORRELATIONS
COUNTING TECHNIQUES
DATA
ENERGY LOSSES
ENERGY RANGE
EXPERIMENTAL DATA
FISSION
FISSION FRAGMENTS
HADRON REACTIONS
HEAVY ION REACTIONS
HELIUM 3 REACTIONS
INFORMATION
LITHIUM 6 REACTIONS
LOSSES
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
MOMENTUM TRANSFER
NITROGEN 14 REACTIONS
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
PRECOMPOUND-NUCLEUS EMISSION
PROTON REACTIONS
SPALLATION
TARGETS
THORIUM 232 TARGET
URANIUM 238 TARGET