https://doi.org/10.1140/epja/i2009-10829-y
Regular Article - Theoretical Physics
Microscopic analysis of the fission barriers in 256Fm and 258Fm
1
Katedra Fizyki Teoretycznej, Uniwersytet Marii Curie-Skłodowskiej, ul. Radziszewskiego 10, 20-031, Lublin, Poland
2
Departament d’Estructura i Constituents de la Matèria and Institut de Ciències del Cosmos, Facultat de Física, Universitat de Barcelona, Diagonal 647, 08028, Barcelona, Spain
* e-mail: warda@kft.umcs.lublin.pl
Received:
31
December
2008
Revised:
16
April
2009
Accepted:
13
May
2009
Published online:
17
June
2009
The fission barriers of 256Fm and 258Fm have been analyzed in the HFB theory. The potential energy and the effective inertia parameter have been calculated in the two-dimensional deformation space of quadrupole and octupole moments. Fission paths for various octupole moments of the exit point from the fission barrier have been determined. The half-life along each path has been calculated. The shortest half-lives have been obtained for the paths with reflection symmetric shapes of nuclei in both the considered isotopes.
© SIF, Springer-Verlag Berlin Heidelberg, 2009