Journal Article

PreJuSER-49983

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Fast decision in favor of the slow fission process

Tishchenko, V. ; Herbach, C. M. ; Hilscher, D. ; Jahnke, U. ; Galin, J. ; Goldenbaum, F.FZJ* ; Letourneau, A.FZJ* ; Schröder, U.

2005
APS College Park, Md.

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Please use a persistent id in citations: http://hdl.handle.net/2128/1657  doi:10.1103/PhysRevLett.95.162701

Abstract: The fission probability P-f of highly excited targetlike nuclei produced in reactions of 2.5 GeV protons on Au, Bi, and U was studied as a function of excitation energy E-* whereby E-* is deduced eventwise from the multiplicity of evaporated light particles. At the highest E-* of 1000 MeV P-f amounts to approximate to 30% with all 3 target nuclei irrespective of the initial fissility. Statistical-model calculations satisfactorily reproduce the observed evolution of P-f with E-*-provided that no extra transient delay is introduced. Fission thus is decided upon very fast and early in the long deexcitation chain towards scission which comprises as much as approximate to 80% of all evaporated alpha particles.

Keyword(s): J

Note: Record converted from VDB: 12.11.2012

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Contributing Institute(s):

1. Institut 1 (Experimentelle Kernphysik I) (IKP-E-I)

Research Program(s):

1. Physik der Hadronen (M01)

Appears in the scientific report 2005
Notes: This version is available at the following Publisher URL: http://prl.aps.org

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