Additional evidence for fusion-fission in sup 32 S+ sup 24 Mg reactions: Division of excitation energy and spin in the fission fragments

Journal Article · Tue May 01 00:00:00 EDT 1990 · Physical Review, C (Nuclear Physics); (USA)

OSTI ID:6939915

Sanders, S J ^[1]; Back, B B; Janssens, R V.F.; Kovar, D G; Habs, D; Henderson, D; Khoo, T; Korner, H; Rathke, G; Wang, T F; Wolfs, F L.H. ^[2]; Beard, K B ^[3]

---

1. Department of Physics and Astronomy, University of Kansas, Lawrence, Kansas 66045 (USA) Argonne National Laboratory, Argonne, Illinois 60439 (USA)
2. Argonne National Laboratory, Argonne, Illinois 60439 (USA)
3. Department of Physics, University of Notre Dame, South Bend, Indiana 46556 (USA)

We have measured {gamma} rays in coincidence with {sup 12}C fragments from the fission of {sup 56}Ni produced with the {sup 32}S+{sup 24}Mg reaction at {ital E}{sub lab}=140 MeV. These data provide insight into the fission process in this light system by giving information about the energy and spin sharing between the {sup 12}C and {sup 44}Ti fragments, and the spin alignment of the lighter, {sup 12}C fragment. The spin transfer and the nuclear temperature'' at scission deduced from this measurement can be related to the compound-nucleus spin and potential energy at scission. The results indicate a statistical decay process consistent with the predictions of the transition-state model employing newer estimates of the spin- and mass-asymmetry-dependent saddle-point energies and corresponding shapes. No evidence is found for the spin alignment of the {sup 12}C fragments, contrary to what might be expected for a deep-inelastic scattering origin of the fully energy damped yields.

• DOE Contract Number: FG02-89ER40506
• OSTI ID: 6939915
• Journal Information: Physical Review, C (Nuclear Physics); (USA), Vol. 41:5; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
MAGNESIUM 24 TARGET
SULFUR 32 REACTIONS
NICKEL 56
FISSION
COMPOUND-NUCLEUS REACTIONS
BGO DETECTORS
CARBON 12
COINCIDENCE SPECTROMETRY
FISSION FRAGMENT DETECTION
GE SEMICONDUCTOR DETECTORS
SI SEMICONDUCTOR DETECTORS
SPIN
TITANIUM 44
ANGULAR MOMENTUM
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CARBON ISOTOPES
CHARGED-PARTICLE REACTIONS
DAYS LIVING RADIOISOTOPES
DETECTION
ELECTRON CAPTURE RADIOISOTOPES
EVEN-EVEN NUCLEI
HEAVY ION REACTIONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LIGHT NUCLEI
MEASURING INSTRUMENTS
NICKEL ISOTOPES
NUCLEAR REACTIONS
NUCLEI
PARTICLE PROPERTIES
RADIATION DETECTION
RADIATION DETECTORS
RADIOISOTOPES
SCINTILLATION COUNTERS
SEMICONDUCTOR DETECTORS
SOLID SCINTILLATION DETECTORS
STABLE ISOTOPES
TARGETS
TITANIUM ISOTOPES
YEARS LIVING RADIOISOTOPES
651420* - Nuclear Properties & Reactions
A=20-38
Experimental
651520 - Nuclear Properties & Reactions
A=39-58
Experimental