Collective Inertia and Fission Barriers within the Skyrme - Hartree - Fock Theory
نویسندگان
چکیده
Spontaneous fission barriers, quadrupole inertia tensor, and zero-point quadrupole correlation energy are calculated for 252,256,258 Fm in the framework of the self-consistent Skyrme-Hartree-Fock+BCS theory. Two ways of computing collective inertia are employed: the Gaussian Overlap Approximation to the Generator Coordinate Method and cranking ansatz. The Skyrme results are compared with those of the Gogny-Hartree-Fock-Bogolyubov model.
منابع مشابه
Quadrupole Inertia , Zero - Point Corrections , and Fission Barriers in the Skyrme - Hartree - Fock Theory
Spontaneous fission barriers, quadrupole inertia, and zero-point quadrupole-energy corrections are calculated for 252,256,258 Fm in the framework of the self-consistent Skyrme-Hartree-Fock+BCS theory. Two ways of computing dynamical inertia are employed: the Gaussian Overlap Approximation to the Generator Coordinate Method and crank-ing ansatz. The Skyrme results are compared with those of the ...
متن کاملRotational Properties of Influence of Pairing Correlations
Rotational bands of 252,253,254 No and the fission barriers of 254 No at spin 0¯ h and 20¯ h are calculated with the Hartree-Fock-Bogolyubov theory and the Lipkin-Nogami approximate particle number projection. The SLy4 Skyrme force is used in the particle-hole channel. A zero-range force with and without density-dependence is used in the particle-particle channel. The experimental ground state ...
متن کاملMicroscopic Determinations of Fission Barriers (mean-field and Beyond)
With a help of the selfconsistent Hartree-Fock-Bogoliubov (HFB) approach with the D1S effective Gogny interaction and the Generator Coordinate Method (GCM) we incorporate the transverse collective vibrations to the one-dimensional model of the fission-barrier penetrability based on the traditional WKB method. The average fission barrier corresponding to the least-energy path in the two-dimensio...
متن کاملar X iv : n uc l - th / 0 61 20 17 v 1 4 D ec 2 00 6 Bimodal fission in the Skyrme - Hartree - Fock approach ∗
Spontaneous-fission properties of 256 Fm, 258 Fm, and 260 Fm isotopes are studied within the Skyrme-Hartree-Fock+BCS framework. In the particle-hole channel we take the Skyrme SkM * effective force, while in the particle-particle channel we employ the seniority pairing interaction. Three static fission paths for all investigated heavy fermium isotopes are found. The analysis of these fission mo...
متن کاملFission of heavy Λ hypernuclei with the Skyrme-Hartree-Fock approach
Fission-related phenomena of heavy Λ hypernuclei are discussed with the constraint Skyrme-Hartree-Fock+BCS (SHF+BCS) method, in which a similar Skyrme-type interaction is employed also for the interaction between a Λ particle and a nucleon. Assuming that the Λ particle adiabatically follows the fission motion, we discuss the fission barrier height of 239 ΛU. We find that the fission barrier hei...
متن کامل