Fission of heavy nuclei induced by stopped antiprotons. I. Inclusive characteristics of fission fragments

Journal Article · Sun May 01 04:00:00 EDT 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.49.2555· OSTI ID:5009324

Hofmann, P; Iljinov, A S; Kim, Y S; Mebel, M V; Daniel, H; David, P; von Egidy, T; Haninger, T; Hartmann, F J; Jastrzebski, J; Kurcewicz, W; Lieb, J; Machner, H; Plendl, H S; Riepe, G; Wright, B; Ziock, K ^[1]

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1. Physik-Department; Technische Universitaet Muenchen; D-85748 Garching (Germany) Institute for Nuclear Research; Russia Academy of Sciences; 117312 Moscow (Russian Federation) Universitaet Bonn; D-53115 Bonn (Germany) Warsaw University; PL 02-097 Warsaw (Poland) George Mason University; Fairfax; Virginia 22030 (United States) Forschungszentrum Juelich; D-52425 Juelich (Germany) Florida State University; Tallahassee; Florida 32306 (United States) University of Virginia; Charlottesville; Virginia 22901 (United States)

Antiproton-induced fission has been investigated with a novel double-arm fission fragment spectrometer. Inclusive distributions of total mass, individual mass, and total kinetic energy of the fragments, and of the momentum of the fissioning nucleus, were measured. A dynamical model which takes into account all stages of [ital [bar p]]-induced fission (atomic cascade, intranuclear cascade, evaporation cascade, fission of compound nucleus, evaporation from fission fragments) was formulated for the first time. In particular, the dynamics of the descent of fissioning nuclei from saddle point to scission point are described by the diffusion model. The data on [ital [bar p]]-induced fission were analyzed in the framework of this model and good agreement between experiment and theory was obtained.

• OSTI ID: 5009324
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 49:5; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

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73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANTINUCLEON REACTIONS
ANTIPROTON REACTIONS
BARYON REACTIONS
BISMUTH 209 TARGET
DATA
ENERGY RANGE
EXPERIMENTAL DATA
FISSION
FISSION FRAGMENTS
HADRON REACTIONS
INFORMATION
MEV RANGE
MEV RANGE 01-10
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
NUCLEON REACTIONS
NUMERICAL DATA
TARGETS
THEORETICAL DATA
THORIUM 232 TARGET
URANIUM 238 TARGET