Multidimensional Skyrme-density-functional Study of the Spontaneous Fission of 238U
Sadhukhan, J., Mazurek, K., Dobaczewski, J., Nazarewicz, W., Sheikh, J.A., & Baran, A. (2015). Multidimensional Skyrme-density-functional Study of the Spontaneous Fission of 238U. Acta Physica Polonica B, 46(3), 575-578. https://doi.org/10.5506/APhysPolB.46.575
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Acta Physica Polonica BAuthors
Date
2015Copyright
© the Authors, 2015. This is an open access article distributed under a Creative Commons Attribution 3.0 License. Funded by SCOAP3.
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.
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Faculty of Physics, Astronomy and Applied Computer Science, Jagiellonian UniversityISSN Search the Publication Forum
0587-4254Keywords
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