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dc.contributor.authorOBERSTEDT STEPHANen_GB
dc.contributor.authorGAWRYS M.en_GB
dc.contributor.authorLOEVESTAM GOERANen_GB
dc.contributor.authorOBERSTEDT Andreasen_GB
dc.contributor.authorPLOMPEN ARJANen_GB
dc.contributor.authorSEMKOVA Valentinaen_GB
dc.date.accessioned2010-02-25T17:28:48Z-
dc.date.available2008-01-17en_GB
dc.date.available2010-02-25T17:28:48Z-
dc.date.created2008-01-17en_GB
dc.date.issued2007en_GB
dc.date.submitted2007-12-03en_GB
dc.identifier.citationProceedings of the NEMEA-3 Neutron Measurements, Evaluations and Applications p. 93-97en_GB
dc.identifier.urihttp://publications.jrc.ec.europa.eu/repository/handle/JRC41910-
dc.description.abstractA new spectrometer has been built at the EC-JRC IRMM to investigate isomer decay in the millisecond range and activation cross-sections of isotopes, where isomeric states exist and are populated. The spectrometer uses high-resolution ¿-ray detectors and an ionisation chamber for the measurement of charged particles, e. g. fission fragments. NEPTUNE provides pulsed quasi mono-energetic neutrons at pulse repetition frequencies up to 5 kHz and tuneable neutron pulse widths. For this purpose a beam chopper based on a parallel-plate condenser has been integrated into the accelerator beam-line in order to deflect the charged-particle beam onto a tantalum beam dump. An instrument status report is given together with results from first experiments dedicated to the search for shape isomers in 235,239U performed with the NEPTUNE isomer spectrometer.en_GB
dc.description.sponsorshipJRC.D.5-Neutron physicsen_GB
dc.format.mediumPrinteden_GB
dc.languageENGen_GB
dc.publisherOffice for Official Publications of the European Communitiesen_GB
dc.relation.ispartofseriesJRC41910en_GB
dc.titleNEPTUNE - The New Isomer Spectrometer at IRMMen_GB
dc.typeArticles in periodicals and booksen_GB
JRC Directorate:Health, Consumers and Reference Materials

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