Journal
PHYSICAL REVIEW C
Volume 85, Issue 2, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevC.85.024304
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Funding
- US Department of Energy [DE-FC02-09ER41583, DE-FG02-96ER40963, DE-FG52-09NA29461, DE-AC07- 05ID14517, 00091100, DE-AC0Z-06CA11357]
- US Department of Energy by Lawrence Livermore National Laboratory [DE-AC52-07NA27344]
- US Department of Energy Office of Science [DE-AC52-07NA27344]
- American Recovery and Reinvestment Act
- Laboratory Computing Resource Center at Argonne National Laboratory
- National Center for Computational Sciences (NCCS)
- National Institute for Computational Sciences (NICS) at Oak Ridge National Laboratory
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A new Skyrme-like energy density suitable for studies of strongly elongated nuclei was determined in the framework of the Hartree-Fock-Bogoliubov theory using the recently developed model-based, derivative-free optimization algorithm POUNDerS. A sensitivity analysis at the optimal solution has revealed the importance of states at large deformations in driving the parameterization of the functional. The good agreement with experimental data on masses and separation energies, achieved with the previous parameterization UNEDF0, is largely preserved. In addition, the new energy density UNEDF1 gives a much improved description of the fission barriers in Pu-240 and neighboring nuclei.
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