Further explorations of Skyrme-Hartree-Fock-Bogoliubov mass formulas. V. Extension to fission barriers

2005 ◽  
Vol 72 (4) ◽  
Author(s):  
M. Samyn ◽  
S. Goriely ◽  
J. M. Pearson
Keyword(s):  
Hartree Fock ◽  
Fission Barriers ◽  
Mass Formulas

scholarly journals RELATIVE MOTION CORRECTION TO FISSION BARRIERS

2008 ◽  
Vol 17 (01) ◽  
pp. 151-159 ◽  
Author(s):  
J. SKALSKI
Keyword(s):  
Relative Motion ◽  
Cluster Model ◽  
Motion Correction ◽  
Mean Field Theory ◽  
Mean Field ◽  
Ternary Fission ◽  
Skyrme Interaction ◽  
Hartree Fock ◽  
Fission Barriers ◽  
The Mean

We discuss the effect of kinetic energy of the relative motion becoming spurious for separate fragments on the selfconsistent mean-field fission barriers. The treatment of the relative motion in the cluster model is contrasted with the necessity of a simpler and approximate approach in the mean-field theory. A scheme of the energy correction to the Hartree-Fock is proposed. The results obtained with the effective Skyrme interaction SLy 6 show that the correction, previously estimated as ~ 8 MeV in A = 70 - 100 nuclei, amounts to 4 MeV in the medium heavy nucleus 198 Hg and to null in 238 U . However, the corrected barrier implies a shorter fission half-life of the latter nucleus. The same effect is expected to lower barriers for multipartition (i.e. ternary fission, etc) and make hyperdeformed minima less stable.

MICROSCOPIC MASS FORMULAS AND THE FISSION BARRIERS OF NEUTRON-RICH NUCLEI

2003 ◽  
Author(s):  
J. M. PEARSON ◽  
M. SAMYN ◽  
S. GORIELY ◽  
A. MAMDOUH ◽  
M. RAYET
Keyword(s):  
Fission Barriers ◽  
Mass Formulas

Further explorations of Skyrme–Hartree–Fock–Bogoliubov mass formulas. IV: Neutron-matter constraint

2005 ◽  
Vol 750 (2-4) ◽  
pp. 425-443 ◽  
Author(s):  
S. Goriely ◽  
M. Samyn ◽  
J.M. Pearson ◽  
M. Onsi
Keyword(s):  
Neutron Matter ◽  
Hartree Fock ◽  
Mass Formulas

FISSION HALF LIVES OF FERMIUM ISOTOPES WITHIN SKYRME HARTREE-FOCK-BOGOLIUBOV THEORY

2011 ◽  
Vol 20 (02) ◽  
pp. 557-564 ◽  
Author(s):  
A. BARAN ◽  
A. STASZCZAK ◽  
W. NAZAREWICZ
Keyword(s):  
Ground State ◽  
Spontaneous Fission ◽  
Zero Point ◽  
Nuclear Fission ◽  
Point Energy ◽  
Generator Coordinate Method ◽  
Hartree Fock ◽  
Bogoliubov Theory ◽  
Generator Coordinate ◽  
Fission Barriers

Nuclear fission barriers, mass parameters and spontaneous fission half lives of fermium isotopes calculated in a framework of the Skyrme Hartree-Fock-Bogoliubov model with the SkM* force are discussed. Zero-point energy corrections in the ground state are determined for each nucleus using the Gaussian overlap approximation of the generator coordinate method and in the cranking formalism. Results of spontaneous fission half lives are compared to experimental data.

Further explorations of Skyrme–Hartree–Fock–Bogoliubov mass formulas

2003 ◽  
Vol 725 ◽  
pp. 69-81 ◽  
Author(s):  
M. Samyn ◽  
S. Goriely ◽  
J.M. Pearson
Keyword(s):  
Hartree Fock ◽  
Mass Formulas

Hartree-Fock mass formulas and extrapolation to new mass data

2002 ◽  
Vol 66 (2) ◽  
Author(s):  
S. Goriely ◽  
M. Samyn ◽  
P.-H. Heenen ◽  
J. M. Pearson ◽  
F. Tondeur
Keyword(s):  
Hartree Fock ◽  
Mass Data ◽  
Mass Formulas
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