Further Microscopic Studies of the Fission Barriers of Heavy Nuclei
Language
en
Article de revue
This item was published in
International Journal of Modern Physics E. 2012, vol. 21, p. 1250051
World Scientific Publishing
English Abstract
Two systematic sources of error in most current microscopic evaluations of fission-barrier heights are studied. They are concerned with an approximate treatment of the Coulomb exchange terms (known as the Slater approximation) ...Read more >
Two systematic sources of error in most current microscopic evaluations of fission-barrier heights are studied. They are concerned with an approximate treatment of the Coulomb exchange terms (known as the Slater approximation) in the self-consistent mean-fields and the projection on good parity states (e.g., of positive parity for the spontaneous fission of an even-even nucleus) of left-right reflection asymmetric intrinsic solutions (e.g., around the second barrier). Approximate or unprojected solutions are shown to lead each to an underestimation of the barrier heights by a few hundred keV.Read less <
English Keywords
Microscopic calculations
fission barriers
Coulomb energy
parity projection
Hartree-Fock and random-phase approximations
Spontaneous fission
Fission reactions
Origin
Hal imported