Asymmetrical fission and statistical emission of complex fragments from the highly excited sup 47 V compound nucleus

Conference · Tue Jan 01 00:00:00 EST 1991

OSTI ID:5437259

Beck, C; Djerroud, B; Haas, F; Freeman, R M; Hachem, A; Heusch, B; Morsad, A; Vuillet-A-Crilles, M; Youlal, M; Abe, Y ^[1]; Dayras, R; Wieleczko, J P; Legrain, R; Pollaco, E ^[2]; Ray, A; Shapira, D; Campo, J G.D.; Kim, H J ^[3]

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1. Strasbourg-1 Univ., 67 (France). Centre de Recherches Nucleaires
2. CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)
3. Oak Ridge National Lab., TN (United States

The properties of the fully damped (deep-inelastic and orbiting) and fusion (evaporation and fission) processes have been investigated in three entrance channels leading to the same {sup 47} V compound nucleus at high excitation energies. No entrance channel effect has been observed in either the evaporation residue or the fission-like yields in contrast to the {sup 28}Si + {sup 12}C and {sup 24}Mg + {sup 16}O reactions in which the orbiting process still persists. The asymmetrical elemental distributions of the fully energy relaxed fragments are well described by fusion-fission models based respectively on the scission point and saddle point pictures. Finally a general discussion of the competition between orbiting and fusion-fission mechanisms in light heavy-ion reactions is presented in the framework of their calculated available number of open channels.

• Research Organization: Oak Ridge National Lab., TN (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5437259
• Report Number(s): CONF-920140-1; ON: DE92011064
• Resource Relation: Conference: 30. winter meeting on nuclear physics, Bormio (Italy), 27 Jan - 1 Feb 1992
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CARBON 12 TARGET
CHLORINE 35 REACTIONS
MAGNESIUM 24 TARGET
SODIUM 23 REACTIONS
VANADIUM 47
FISSION FRAGMENTS
ANGULAR DISTRIBUTION
ASYMMETRY
COMPOUND NUCLEI
CROSS SECTIONS
ENERGY SPECTRA
HAUSER-FESHBACH THEORY
STATISTICAL MODELS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
DISTRIBUTION
ELECTRON CAPTURE RADIOISOTOPES
HEAVY ION REACTIONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
MATHEMATICAL MODELS
MINUTES LIVING RADIOISOTOPES
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
NUCLEAR THEORY
NUCLEI
ODD-EVEN NUCLEI
RADIOISOTOPES
SPECTRA
TARGETS
VANADIUM ISOTOPES
663450* - Heavy-Ion-Induced Reactions & Scattering- (1992-)
663470 - Fission- (1992-)
663520 - Nuclear Mass Ranges- A=6-19- (1992-)
663530 - Nuclear Mass Ranges- A=20-38- (1992-)
663540 - Nuclear Mass Ranges- A=39-58- (1992-)