Onset of incomplete momentum transfer in fusion-like processes

Conference · Tue Mar 01 04:00:00 EST 1983

OSTI ID:6298198

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

Velocity spectra of evaporation residues from the reactions /sup 16/O + Al, Ca, and Ni have been measured at bombarding energies of 8.8, 13.6, and 19.6 MeV/u. Comparison with statistical model predictions shows clear evidence for the onset of incomplete momentum transfer at about 5 MeV/u 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 Lab., CA (USA); Institute of Nuclear Physics, Krakow (Poland)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6298198
• Report Number(s): LBL-15874; CONF-830138-2; ON: DE83012476
• 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
COMPOUND-NUCLEUS REACTIONS
DATA
ELEMENTS
ENERGY RANGE
EXPERIMENTAL DATA
FUSION REACTIONS
HEAVY ION REACTIONS
INFORMATION
MASS SPECTRA
MATHEMATICAL MODELS
METALS
MEV RANGE
MEV RANGE 01-10
MEV RANGE 10-100
MOMENTUM TRANSFER
NICKEL
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
NUMERICAL DATA
OXYGEN 16 REACTIONS
SPECTRA
STATISTICAL MODELS
TARGETS
TRANSITION ELEMENTS