6533b7dafe1ef96bd126ee59
RESEARCH PRODUCT
Multidimensional Skyrme-density-functional Study of the Spontaneous Fission of 238U
Jacek DobaczewskiJhilam SadhukhanJ.a. SheikhWitold NazarewiczK. MazurekAndrzej Baransubject
Physicsta114Fissionmedia_common.quotation_subjectNuclear TheoryGeneral Physics and AstronomyMoment of inertiaAsymmetryAction (physics)uraniumuraanispontaneous fissionQuantum electrodynamicsPairingStatistical physicsMultipole expansionAdiabatic processSpontaneous fissionmedia_commondescription
We determined the spontaneous fission lifetime of 238U by a minimization of the action integral in a three-dimensional space of collective variables. Apart from the mass-distribution multipole moments Q20 (elongation) and Q30 (left–right asymmetry), we also considered the pairing- fluctuation parameter λ2 as a collective coordinate. The collective potential was obtained self-consistently using the Skyrme energy density functional SkM∗ . The inertia tensor was obtained within the nonperturbative cranking approximation to the adiabatic time-dependent Hartree–Fock– Bogoliubov approach. The pairing-fluctuation parameter λ2 allowed us to control the pairing gap along the fission path, which significantly changed the spontaneous fission lifetime. peerReviewed
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-01-01 | Acta Physica Polonica B |