Induced fission of Pu240 within a real-time microscopic framework

Bulgac, Aurel; Magierski, Piotr; Roche, Kenneth J.; Stetcu, Ionel

doi:10.1103/PhysRevLett.116.122504

Title: Induced fission of ${}^{240}{Pu}$ within a real-time microscopic framework

Journal Article · Fri Mar 25 00:00:00 EDT 2016 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.116.122504· OSTI ID:1247677

Bulgac, Aurel ^[1]; Magierski, Piotr ^[2]; Roche, Kenneth J. ^[3]; Stetcu, Ionel ^[4]

Univ. of Washington, Seattle, WA (United States)
Univ. of Washington, Seattle, WA (United States); Warsaw Univ. of Technology, Warsaw (Poland)
Univ. of Washington, Seattle, WA (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

Here, we describe the fissioning dynamics of ²⁴⁰Pu from a configuration in the proximity of the outer fission barrier to full scission and the formation of the fragments within an implementation of density functional theory extended to superfluid systems and real-time dynamics. The fission fragments emerge with properties similar to those determined experimentally, while the fission dynamics appears to be quite complex, with many excited shape and pairing modes. The evolution is found to be much slower than previously expected, and the ultimate role of the collective inertia is found to be negligible in this fully nonadiabatic treatment of nuclear dynamics, where all collective degrees of freedom (CDOF) are included (unlike adiabatic treatments with a small number of CDOF).

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Organization:: USDOE Office of Science (SC)

Grant/Contract Number:: FG02-97ER41014; AC05-00OR22725; AC02-05CH11231; UMO-2013/08/A/ST3/00708; UMO-2012/07/B/ST2/03907; AC52-06NA25396

OSTI ID:: 1247677

Alternate ID(s):: OSTI ID: 1244134

Report Number(s):: LA-UR-15-28092; PRLTAO

Journal Information:: Physical Review Letters, Vol. 116, Issue 12; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 164 works

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