Characterization of isomers produced by the spontaneous fission of 252Cf with the VESPA setup
Isomers produced by spontaneous fission of Cf-252 were measured with the VESPA setup, composed of LaBr3(Ce) detectors for fast γ-ray spectroscopy and an ionization chamber for detecting fission fragments. Identification of the isomers was derived from fission fragment-γ-γ coincidences. This paper presents the half-lives of 41 isomeric states measured with this setup, from less than a nanosecond up to tens of microseconds. Short-lived isomers in 94Rb, 108Tc and 147Ce are reported for the first time. In addition to this half-life analysis, the isomers are used to develop and test a nuclear charge calibration of the ionization chamber.
PIAU V.;
GOOK Alf;
OBERSTEDT Stephan;
OBERSTEDT Andreas;
CHEBBOUBI A.;
LITAIZE O.;
VIDALI Marzio;
2025-01-21
SPRINGER
JRC140283
1434-601X (online),
1434-6001 (print),
https://link.springer.com/article/10.1140/epja/s10050-024-01470-9#citeas,
https://publications.jrc.ec.europa.eu/repository/handle/JRC140283,
10.1140/epja/s10050-024-01470-9 (online),
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