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Effects of rotation on the stability of nuclei under fission and the possibility of fusion in heavy-ion reactions

Journal Article · · Physical Review. C, Nuclear Physics
;
The two-center shell model for fission is extended to include the effects of nuclear rotation or angular momentum J. The principle of minimization of total nuclear energy with respect to a constraint on J leads to an effective potential energy which depends on J as well as moment of inertia. This effective potential energy is minimized with respect to nuclear shape variables, neutron pairing energy gap, and proton pairing energy gap for each J value. The resulting potential minima, fission barriers, and moments of inertia are quite sensitive to J. Results are given for $sup 208$$sub 82$Pb, $sup 240$$sub 94$Pu, and for a super-heavy nucleus $sup 298$$sub 114$X. Our microscopic calculations of the critical angular momentum (at which the fission barrier vanishes) are compared with the rotating liquid drop calculations of Cohen, Plasil, and Swiatecki. The influence of these results on the possibility of fusion in heavy- ion reactions is discussed. (AIP)
Research Organization:
Department of Physics and Astronomy, University of Maryland, College Park, Maryland 20742
Sponsoring Organization:
USDOE
NSA Number:
NSA-33-010945
OSTI ID:
4121808
Journal Information:
Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 12; ISSN 0556-2813; ISSN PRVCAN
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English

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Related Subjects

*ELEMENT 114-- FISSION
*HEAVY ION REACTIONS-- FUSION REACTIONS
*LEAD 208-- FISSION
*PLUTONIUM 240-- FISSION
643305*
ANGULAR MOMENTUM
COMPOUND NUCLEI
FISSION BARRIER
MOMENT OF INERTIA
N68952 --Physics (Nuclear
Theoretical)--Nuclear Properties & Reactions
190 <= A <= 219--Nuclear Reactions & Scattering
N68962 --Physics (Nuclear
Theoretical)--Nuclear Properties & Reactions
190 <= A <= 219--Nuclear Reactions & Scattering--Spontaneous & Induced Fission
N69152* --Physics (Nuclear
Theoretical)--Nuclear Properties & Reactions
A >= 220--Nuclear Reactions & Scattering
N69162 --Physics (Nuclear
Theoretical)--Nuclear Properties & Reactions
A >= 220--Nuclear Reactions & Scattering--Spontaneous & Induced Fission:734
PAIRING ENERGY
ROTATION