Breakup of the projectile at 35 MeV/nucleon

Journal Article · Fri Jun 01 04:00:00 EDT 1990 · Physical Review, C (Nuclear Physics); (USA)

DOI:https://doi.org/10.1103/PhysRevC.41.2635· OSTI ID:6939804

Gonthier, P L; Harper, P; Bouma, B; Ramaker, R ^[1]; Cebra, D A; Koenig, Z M; Fox, D; Westfall, G D ^[2]

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1. Department of Physics, Hope College, Holland, Michigan 49423 (USA)
2. National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, Michigan 48824 (USA) Department of Physics Astronomy, Michigan State University, East Lansing, Michigan 48824 (USA)

Projectile breakup processes are probed by studying the emission of {alpha} particles in coincidence with projectile-like fragments as a function of the dissipated energy in the collisions of 35 MeV/nucleon {sup 16}O with {sup 58}Ni. Energy correlations between {alpha} particles and projectile-like fragments at small-angle geometries allow the separation of the sources of {alpha} emission from projectile-like and target-like fragments. We find that the slope parameters of the decay energy distributions, the average excitation energies, and the {alpha} particle multiplicities of the projectile-like fragments increase with increasing dissipation of energy. If the linear dependence, exhibited by the data, of the slope parameter with the dissipated energy is included in model calculations, the majority of the coincidence yield in the forward hemisphere can be explained. However, an excess yield of the data on the opposite side of the beam from the observed projectile-like fragment still remains. Such analysis of the data suggests that the breakup of the projectile is the dominant source of light particles at forward angles. Processes resulting in the breakup of the projectile must be better understood in order to study other processes leading to similar phenomena.

• OSTI ID: 6939804
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Journal Name: Physical Review, C (Nuclear Physics); (USA) Vol. 41:6; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651520* -- Nuclear Properties & Reactions
A=39-58
Experimental
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACCELERATORS
ALPHA PARTICLES
BREAKUP REACTIONS
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
COINCIDENCE METHODS
COUNTING TECHNIQUES
CYCLIC ACCELERATORS
CYCLOTRONS
DATA
ENERGY RANGE
EXPERIMENTAL DATA
HEAVY ION REACTIONS
INFORMATION
MEV RANGE
MEV RANGE 100-1000
MULTIPLICITY
NICKEL 58 TARGET
NUCLEAR FRAGMENTATION
NUCLEAR REACTIONS
NUMERICAL DATA
OXYGEN 16 REACTIONS
SUPERCONDUCTING CYCLOTRONS
TARGETS