Nuclear Fission: from more phenomenology and adjusted parameters to more fundamental theory and increased predictive power

Bulgac, Aurel; Jin, Shi; Magierski, Piotr; Roche, Kenneth; Schunck, Nicolas; Stetcu, Ionel; Simpson, E. C.; Simenel, C.; Cook, K. J.; Carter, I. P.

doi:10.1051/epjconf/201716300007

Title: Nuclear Fission: from more phenomenology and adjusted parameters to more fundamental theory and increased predictive power

Journal Article · Wed Nov 22 00:00:00 EST 2017 · EPJ Web of Conferences (Online)

DOI:https://doi.org/10.1051/epjconf/201716300007· OSTI ID:1544353

Bulgac, Aurel ^[1]; Jin, Shi ^[1]; Magierski, Piotr ^[2]; Roche, Kenneth ^[3]; Schunck, Nicolas ^[4]; Stetcu, Ionel ^[5]; Simpson, E. C. ^[6]; Simenel, C. ^[6]; Cook, K. J. ^[6]; Carter, I. P. ^[6]

Univ. of Washington, Seattle, WA (United States)
Warsaw Univ. of Technology (Poland); Univ. of Washington, Seattle, WA (United States)
Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Univ. of Washington, Seattle, WA (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Australian National Univ., Canberra, ACT (Australia)

Two major recent developments in theory and computational resources created the favorable conditions for achieving a microscopic description of fission dynamics in classically allowed regions of the collective potential energy surface, almost eighty years after its discovery in 1939 by Hahn and Strassmann [1]. The first major development was in theory, the extension of the Time-Dependent Density Functional Theory (TDDFT) [2–5] to superfluid fermion systems [6]. The second development was in computing, the emergence of powerful enough supercomputers capable of solving the complex systems of equations describing the time evolution in three dimensions without any restrictions of hundreds of strongly interacting nucleons. Thus the conditions have been created to renounce phenomenological models and incomplete microscopic treatments with uncontrollable approximations and/or assumptions in the description of the complex dynamics of fission. Even though the available nuclear energy density functionals (NEDFs) are phenomenological still, their accuracy is improving steadily and the prospects of being able to perform calculations of the nuclear fission dynamics and to predict many properties of the fission fragments, otherwise not possible to extract from experiments.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: FG02-97ER41014; AC52-07NA27344; AC05-00OR22725; AC02-05CH11231

OSTI ID:: 1544353

Journal Information:: EPJ Web of Conferences (Online), Vol. 163; ISSN 2100-014X

Publisher:: EDP SciencesCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 2 works

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Microscopically-based energy density functionals for nuclei using the density matrix expansion: Full optimization and validation Perez, R. Navarro; Schunck, N.; Dyhdalo, A. arXiv https://doi.org/10.48550/arxiv.1801.08615	text	January 2018
Nuclear Fission Dynamics: Past, Present, Needs, and Future Bulgac, Aurel; Jin, Shi; Stetcu, Ionel Frontiers in Physics, Vol. 8 https://doi.org/10.3389/fphy.2020.00063	journal	March 2020

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