Effects of nuclear orientation on fission fragment mass distributions in the reactions of {sup 34,36}S+{sup 238}U

Journal Article · Wed Mar 04 04:00:00 EST 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3108831· OSTI ID:21289475

Nishio, K; Ikezoe, H; Mitsuoka, S; Nishinaka, I; Nagame, Y ^[1]; Watanabe, Y ^[2]; Ohtsuki, T; Hirose, K ^[3]; Hofmann, S ^[4]

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1. Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195 (Japan)
2. Accelerator Organization (KEK), Tsukuba, Ibaraki 305-0801 (Japan)
3. Laboratory of Nuclear Science, Tohoku University, Sendai 982-0826 (Japan)
4. Gesellschaft fuer Schwerionenforschung mbH, D-64220 Darmstadt (Germany)

Fission fragment mass distributions in the reactions of {sup 34,36}S+{sup 238}U were measured at bombarding energies around the Coulomb barrier. The data showed a transition from symmetric to asymmetric mass distributions when the beam energies were decreased from the above-barrier to sub-barrier values. The asymmetric fission is attributed to quasifission of the reacting system at polar collisions, whereas the symmetric fission originates from the compound nucleus produced in equatorial collisions. The results suggest a influence of orientation effects of the deformed target nuclei on fusion.

• OSTI ID: 21289475
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1098; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ASYMMETRY
COMPOUND-NUCLEUS REACTIONS
COULOMB FIELD
ENERGY DEPENDENCE
FISSION
FISSION FRAGMENTS
MASS DISTRIBUTION
QUASI-FISSION
SULFUR 34 REACTIONS
SULFUR 36 REACTIONS
TRANSACTINIDE ELEMENTS
URANIUM 238 TARGET