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Shape isomers: a key to fission barriers
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2008 (English)In: Seminar on Fission VI, Corsendonk Priory, Belgium, September 18-21, 2007 / [ed] Cyriel Wagemans, Jan Wagemans, Pierre D'hondt, 2008, , p. 8p. 233-240Conference paper, Published paper (Refereed)
Abstract [en]

Quantitative predictions of fission product yields are relevant for the reliable operation of different modern nuclear applications. This concerns the realistic characterizations of the radio-toxicity of the fuel elements after the envisaged extended irradiation, as well as sub-critical assemblies, where the number of delayed neutrons from minor actinides is determined by the characteristic emission yields of the corresponding so-called pre-cursor isotopes. However, to be able to make more reliable quantitative predictions of fission characteristics requires the better understanding of the fission process itself. For this purpose a better knowledge about the distinct structure of the nuclear energy landscape around the fission barrier is indispensable. In particular, the question should be answered, whether the fission barrier is either double- or triple-humped or even multi-humped as been proposed within the multi-modal neck rupture model. Despite quite some effort based on different experimental techniques and theoretical approaches, this question remains still unanswered. There is still no consistent picture of the fission barrier available and hence, different sets of barrier parameters are in use, unable to describe the different observed phenomena in a coherent way. With the systematic investigation of shape isomer population, its decay modes as well as the branching ratio, precise information can be obtained to resolve the puzzling situation. The experimental approach will be discussed and results from first experiments presented.

Place, publisher, year, edition, pages
2008. , p. 8p. 233-240
National Category
Subatomic Physics
Research subject
Physics
Identifiers
URN: urn:nbn:se:oru:diva-11220DOI: 10.1142/9789812791061_0022ISBN: 9789812791061 (print)OAI: oai:DiVA.org:oru-11220DiVA, id: diva2:160130
Conference
Seminar on Fission VI, Corsendonk Priory, Belgium, September 18-21, 2007
Available from: 2009-02-12 Created: 2009-02-12 Last updated: 2017-10-18Bibliographically approved

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Oberstedt, Andreas

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CiteExportLink to record
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Citation style
  • apa
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  • vancouver
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  • de-DE
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  • nn-NB
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More languages
Output format
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  • asciidoc
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