Equilibrium shapes and fission barriers of rotating nuclei with a macroscopic two-center model

Journal Article · Sat May 01 04:00:00 EDT 1982 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.25.2524· OSTI ID:5122569

Mustafa, M G; Baisden, P A; Chandra, H

Equilibrium shapes and fission barriers of rotating nuclei have been calculated using a macroscopic two-center model, with a finite-range nuclear force and a diffuse nuclear surface. Our model differs from the rotating-liquid-drop model of Cohen, Plasil, and Swiatecki in the shape parametrization and in the calculations of the surface, Coulomb, and rotational energies. We use the two-center-model shape parametrization, which allows for triaxial shape variations and a continuous transition from one-center to two-center shapes with a smooth neck. We calculate the surface energy with the Yukawa-plus-exponential folding function of Krappe, Nix, and Sierk, which incorporates the effects of the finite range of the nuclear force and the diffuse nuclear surface, and calculate both the Coulomb and rotational energies with surface diffuseness described by a Yukawa folding function. The calculation includes beta-stable nuclei up to mass number A = 250 and selected nuclei off the line of beta stability. The results are compared with the predictions of the rotating-liquid-drop model and with experimental results statistically deduced from heavy-ion induced reactions.

• Research Organization: Nuclear Chemistry Division, Lawrence Livermore National Laboratory, Livermore, California 94550
• OSTI ID: 5122569
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 25:5; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653006* -- Nuclear Theory-- Spontaneous & Induced Fission
653007 -- Nuclear Theory-- Nuclear Models-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
CHARGED-PARTICLE REACTIONS
ENERGY
ENERGY LEVELS
EXCITED STATES
FISSION
FISSION BARRIER
FREE ENERGY
HEAVY ION REACTIONS
LIQUID DROP MODEL
MATHEMATICAL MODELS
NUCLEAR MODELS
NUCLEAR POTENTIAL
NUCLEAR REACTIONS
PHYSICAL PROPERTIES
POTENTIALS
ROTATIONAL STATES
SURFACE ENERGY
SURFACE PROPERTIES
THERMODYNAMIC PROPERTIES
YUKAWA POTENTIAL