Deformation Potentials in Symmetric Multi-Fold Fission and Their Temperature-Dependence

Dai Guangxi

Chinese Physics C> 1995, Vol. 19> Issue(5) : 447-454

Deformation Potentials in Symmetric Multi-Fold Fission and Their Temperature-Dependence

Dai Guangxi ^,

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000Cyclotron Institute and Physics Deportment, Texas A&M University,Coollege Statin, Texas 77843

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Abstract：
Deformation consisting of a series of quasi-Cassinian rotating bodies surrounding a inner joined sphere is assumed to be that associated with symmetric multifold fissions into two or more fragments. The deformation shapes with only one parameter evolve smoothly from that of an initial spherical nucleus to the scission point. The shapes are calculated using a quasi-Cassinian ovaloid shape parameterization, which has been demonstrated to be a good approximation for binary fission.Using this parameterization the deformation potential and barriers in 2,3,4,6 and 8-fold multifold fissions are calculated. Proximity effects are included. The temperature dependence of these fission barriers is considered too. Finally the fission dynamics delay effects on the multi-fission processes is also discussed.

References

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NuclearDynamics,Nuclear Dissembly,J.B.Natowitz editor,World Scientific（1989）.[2]P.Roussel-Chomaz,N.Colonna,Y.Blumenfeldetal.Nucl,Phys,A551（1993）508.[3]D.Hilscher,H.Rossner,Hahn-Meitner Institute Preprint{HMI-92-P2}-Hill（1992）.[4]V.V.Pashkevich,Nucl.Phys,A169（1971）275.[5]戴光曦、李伟生，高能物理与核物理12（1988）669;G.Dai,W.Li, esePhys.8（988）427. [6]G.Dai,AIP Confer.Proc.250NIKKO 1991 Japan,383（1991）.[7]A.Diehl,W.Greiner,Nucl.Phys,A229（1974）29.[8]F.Haddad,G.Royer,J.PhysG:Nucl.Part.Phys.,18（1992）L153.[9]J.Blocki,J.Randrup,W.J.Swiatecki,C.F.Tsang,Ann.Phys,NY105（1977）427.[10]H.R.Jaqaman,Phys.Rev,C40（1989）1677.[11]N.Carjan,Nucl.Phys.,A452（1986）381.

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Dai Guangxi. Deformation Potentials in Symmetric Multi-Fold Fission and Their Temperature-Dependence[J]. Chinese Physics C, 1995, 19(5): 447-454.

Dai Guangxi. Deformation Potentials in Symmetric Multi-Fold Fission and Their Temperature-Dependence[J]. Chinese Physics C, 1995, 19(5): 447-454. shu

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Received: 1900-01-01
Revised: 1900-01-01

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沈阳化工大学材料科学与工程学院沈阳 110142

Deformation Potentials in Symmetric Multi-Fold Fission and Their Temperature-Dependence

Dai Guangxi ^,

Corresponding author: Dai Guangxi,

Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000Cyclotron Institute and Physics Deportment, Texas A&M University,Coollege Statin, Texas 77843

Received Date: 1900-01-01
Accepted Date: 1900-01-01
Available Online: 1995-05-05

Abstract: Deformation consisting of a series of quasi-Cassinian rotating bodies surrounding a inner joined sphere is assumed to be that associated with symmetric multifold fissions into two or more fragments. The deformation shapes with only one parameter evolve smoothly from that of an initial spherical nucleus to the scission point. The shapes are calculated using a quasi-Cassinian ovaloid shape parameterization, which has been demonstrated to be a good approximation for binary fission.Using this parameterization the deformation potential and barriers in 2,3,4,6 and 8-fold multifold fissions are calculated. Proximity effects are included. The temperature dependence of these fission barriers is considered too. Finally the fission dynamics delay effects on the multi-fission processes is also discussed.