Excitation-energy dependence of fission in the mercury region

McDonnell, J. D.; Nazarewicz, W.; Sheikh, J. A.; Staszczak, A.; Warda, M.

doi:10.1103/PhysRevC.90.021302

Title: Excitation-energy dependence of fission in the mercury region

Journal Article · Fri Aug 29 00:00:00 EDT 2014 · Physical Review C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.90.021302· OSTI ID:1454619

McDonnell, J. D. ^[1]; Nazarewicz, W. ^[2]; Sheikh, J. A. ^[3]; Staszczak, A. ^[4]; Warda, M. ^[5]

Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Univ. of Tennessee, Knoxville, TN (United States)
Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Warsaw, Warsaw (Poland)
Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States); Univ. of Kashmir, Srinagar (India)
Univ. of Tennessee, Knoxville, TN (United States); Maria Curie-Sklodowska Univ., Lublin (Poland)
Maria Curie-Sklodowska Univ., Lublin (Poland)

Recent experiments on β-delayed fission reported an asymmetric mass yield in the neutron-deficient nucleus ¹⁸⁰Hg. Earlier experiments in the mass region A = 190–200 close to the β-stability line, using the (p,f) and (α,f) reactions, observed a more symmetric distribution of fission fragments. While the β-delayed fission of ¹⁸⁰Hg can be associated with relatively low excitation energy, this is not the case for light-ion reactions, which result in warm compound nuclei. Here, the low-energy fission of ^180,198Hg has been successfully described by theory in terms of strong shell effects in pre-scission configurations associated with dinuclear structures.

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Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC); USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-07NA27344; FG02-96ER40963; NA0001820; SC0008499; FC52-08NA28752

OSTI ID:: 1454619

Alternate ID(s):: OSTI ID: 1180093

Report Number(s):: LLNL-JRNL-656299; PRVCAN; 777127; TRN: US1901095

Journal Information:: Physical Review C, Nuclear Physics, Vol. 90, Issue 2; ISSN 0556-2813

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 56 works

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