Application of Calorimetric Low-Temperature Detectors for the Investigation of Z-Yield Distributions of Fission Fragments

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ID: 96216
2018
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Abstract
In recent experiments, the new concept of calorimetric low-temperature detectors (CLTDs) was applied for the first time for the investigation of isotopic yields of fission fragments. Fragments from neutron-induced fission sources were mass-separated by the LOHENGRIN spectrometer at the ILL Grenoble and, after passing silicon nitride membranes used as degraders, detected in a CLTD array. The new detector concept of a thermal detector provides a fundamental advantage over conventional ionization-mediated detectors, in particular for heavier particle masses at low energies. Using fissile targets of 235U, 239Pu and 241Pu, nuclear-charge separation was studied in the mass region 82 ≤ A ≤ 139. For light fragments, the Z resolution matches historically best values with conventional techniques, while for heavier masses substantial improvement was attained. We have gained first LOHENGRIN data on the isotopic yields in the light-mass group of 241Pu. Towards mass-symmetry, known Z-yield data were supplemented in the range A = 110 to 113 for 241Pu and 239Pu. Extended data sets were cumulated for A = 92 and 96 due to a recent request from studies on the reactor anti-neutrino spectrum. Furthermore, considerable progress was achieved to extend isotopic yield measurements up to the heavy-mass region, hardly accessible until now.
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santwana2018applicationepj Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Dubey Santwana, Echler Artur, Egelhof Peter, Grabitz Patrick, Mutterer Manfred, Lauterfeld Werner, Stolte Stefan, Blanc Aurelien, Köster Ulli, Kraft-Bermuth Saskia, Scholz Pascal, Bishop Shawn, Gomez Jose, Gönnenwein Friedrich
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Journal epj web of conferences
Year 2018
DOI
DOI not found
URL
https://doi.org/10.1051/epjconf/201819304002
Keywords
Engineering (General). Civil engineering (General) physics

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