Onset of nonequilibrium phenomena in fusionlike processes for /sup 16/O-induced reactions

Journal Article · Sat Jan 01 04:00:00 EST 1983 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.27.447· OSTI ID:6143322

Chan, Y; Murphy, M; Stokstad, R G; Tserruya, I; Wald, S; Budzanowski, A

We have measured velocity spectra of evaporation residues from the reactions /sup 16/O+Al, Ca, and Ni at bombarding energies of 8.8, 13.6, and 19.6 Mev nucleon. Comparison with statistical model predictions shows clear evidence for the onset of incomplete momentum transfer at about 5 MeV nucleon above the interaction barrier. To first order, the results are similar for all targets, suggesting that the missing momentum is mainly associated with the projectile. The fraction of transferred linear momentum appears to decrease linearly with increasing relative velocity of the colliding nuclei at the barrier.

• Research Organization: Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720
• OSTI ID: 6143322
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 27:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH METALS
ALUMINIUM 27 TARGET
CALCIUM
CHARGED-PARTICLE REACTIONS
DATA
ELEMENTS
ENERGY RANGE
EXPERIMENTAL DATA
FUSION REACTIONS
HEAVY ION REACTIONS
INFORMATION
LINEAR MOMENTUM TRANSFER
MATHEMATICAL MODELS
METALS
MEV RANGE
MEV RANGE 10-100
MOMENTUM TRANSFER
NICKEL 60 TARGET
NUCLEAR REACTIONS
NUMERICAL DATA
OXYGEN 16 REACTIONS
STATISTICAL MODELS
TARGETS
VELOCITY