Possibility of transient effects during the emission of intermediate mass fragments

Journal Article · Fri Dec 01 04:00:00 EST 1989 · Physical Review (Section) C: Nuclear Physics; (USA)

DOI:https://doi.org/10.1103/PhysRevC.40.2918· OSTI ID:7016966

Pochodzalla, J ^[1]; Charity, R J; Lynen, U; Sann, H; Trautmann, W; Trockel, R ^[2]

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1. Universitaet Frankfurt, D-6000 Frankfurt, (Germany, F.R.)
2. Gesellschaft fuer Schwerionenforschung Darmstadt m.b.H., D-6100 Darmstadt, (Germany, F.R.)

Multiplicity distributions of intermediate mass fragments observed in the reactions {sup 18}O+{sup nat}Ag and {sup 18}O+{sup 197}Au at {ital E}/{ital A}=84 MeV are compared to statistical model calculations. The emission of intermediate mass fragments from a highly excited ({ital E}{sub {ital x}}/A{ge}6 MeV) {ital A}=100 nucleus is found to be suppressed compared to the predictions of a sequential statistical evaporation model. This deficiency may be interpreted as resulting from dynamical constraints imposed by the finite time necessary to emit complex fragments.

• OSTI ID: 7016966
• Journal Information: Physical Review (Section) C: Nuclear Physics; (USA), Journal Name: Physical Review (Section) C: Nuclear Physics; (USA) Vol. 40:6; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGED-PARTICLE REACTIONS
COMPOUND-NUCLEUS REACTIONS
ELEMENTS
ENERGY RANGE
EVAPORATION MODEL
GEV RANGE
GEV RANGE 01-10
GOLD 197 TARGET
HEAVY ION REACTIONS
MASS SPECTRA
MATHEMATICAL MODELS
METALS
MULTIPLICITY
NUCLEAR FRAGMENTATION
NUCLEAR MODELS
NUCLEAR REACTIONS
OXYGEN 18 REACTIONS
PRECOMPOUND-NUCLEUS EMISSION
SILVER
SPECTRA
STATISTICAL MODELS
TARGETS
TRANSITION ELEMENTS