| Autor: |
Köster, U., 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 |
| Předmět: |
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| Zdroj: |
EPJ Web of Conferences; 2018, Vol. 193, pN.PAG-N.PAG, 9p |
| Abstrakt: |
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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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