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. doi:10.5506/APhysPolB.46.575
Published inActa Physica Polonica B
© 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.
PublisherFaculty of Physics, Astronomy and Applied Computer Science, Jagiellonian University
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