Selective population of states in fission fragments from the [sup 32]S+[sup 24]Mg reaction

Journal Article · Tue Feb 01 00:00:00 EST 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.49.1016· OSTI ID:5261725

Sanders, S J; Hasan, A; Prosser, F W ^[1]; Back, B B; Betts, R R; Carpenter, M P; Henderson, D J; Janssens, R V.F.; Khoo, T L; Moore, E F; Wilt, P R; Wolfs, F L.H.; Wuosmaa, A H ^[2]; Beard, K B ^[3]; Benet, P ^[4]

---

1. The University of Kansas, Department of Physics and Astronomy, Lawrence, Kansas 66045 (United States)
2. Argonne National Laboratory, Argonne, Illinois 60439 (United States)
3. University of Notre Dame, Department of Physics, Notre Dame, Indiana 46556 (United States)
4. Purdue University, Lafayette, Indiana 47907 (United States)

The symmetric and near-symmetric mass fission yields from the [sup 32]S+[sup 24]Mg reaction have been studied in a particle-particle-[gamma] coincidence measurement. Evidence is presented for a selective population of states in [sup 28]Si fragments arising from the symmetric fission of the [sup 56]Ni compound nucleus. A statistical-model calculation of the expected strength to specific mutual excitations of the fission fragments is presented and compared to the experimental results. This calculation is found to describe the structures observed at high excitation energy in the fission [ital Q]-value spectra quite well. Analysis of the [gamma]-ray spectra indicates, however, that a specific set of states in [sup 28]Si, corresponding to a highly deformed prolate band, is populated more strongly than expected based on a purely spin-weighted, statistical decay of the compound nucleus. It is suggested that the population pattern of states in the fission fragments may reflect nuclear structure effects at the point of scission.

• DOE Contract Number: FG02-89ER40506; W-31109-ENG-38
• OSTI ID: 5261725
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Vol. 49:2; 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
FISSION YIELD
GAMMA SPECTRA
NUCLEAR DEFORMATION
SILICON 28
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGED-PARTICLE REACTIONS
DAYS LIVING RADIOISOTOPES
DEFORMATION
ELECTRON CAPTURE RADIOISOTOPES
EVEN-EVEN NUCLEI
HEAVY ION REACTIONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LIGHT NUCLEI
NICKEL ISOTOPES
NUCLEAR REACTION YIELD
NUCLEAR REACTIONS
NUCLEI
RADIOISOTOPES
SILICON ISOTOPES
SPECTRA
STABLE ISOTOPES
TARGETS
YIELDS
663450* - Heavy-Ion-Induced Reactions & Scattering- (1992-)
663300 - Nuclear Reactions & Scattering
General- (1992-)