Fission Barriers of Compound Superheavy Nuclei
Name
Pei-2009-Fission Barriers of.pdf
Size
356.73 KB
Format
Adobe PDF
Checksum (MD5)
bb2d0e3ee9eeaa6a9196a8211b0173b3
Author(s)
Sheikh, J. A.
Nazarewicz, W.
Kerman, Arthur Kent
Pei, J. C.
Date Issued
May 2009
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Pei, J. C. et al. “Fission Barriers of Compound Superheavy Nuclei.” Physical Review Letters 102.19 (2009): 192501. (C) 2010 The American Physical Society.
Version
Final published version
Abstract
The dependence of fission barriers on the excitation energy of the compound nucleus impacts the survival probability of superheavy nuclei synthesized in heavy-ion fusion reactions. In this work, we investigate the isentropic fission barriers by means of the self-consistent nuclear density functional theory. The relationship between isothermal and isentropic descriptions is demonstrated. Calculations have been carried out for [superscript 264]Fm, [superscript 272]Ds, [superscript 278]112, [superscript 292]114, and [superscript 312]124. For nuclei around 278112 produced in “cold-fusion” reactions, we predict a more rapid decrease of fission barriers with excitation energy as compared to the nuclei around [superscript 292]114 synthesized in “hot-fusion” experiments. This is explained in terms of the difference between the ground-state and saddle-point temperatures. The effect of the particle gas is found to be negligible in the range of temperatures studied.
MIT Department
Massachusetts Institute of Technology. Center for Theoretical Physics
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
Persistent DSpace Link
DOI of Published Version
http://dx.doi.org/10.1103/PhysRevLett.102.192501
