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Research on isomer decay with the NEPTUNE spectrometer
Örebro University, School of Science and Technology. (Subatomic Physics)
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2008 (English)In: ND-2007 International Conference on Nuclear Data for Science and Technology, Nice, France, Les Ulis Cedex A, France: EDP Sciences , 2008, , p. 4p. 53-56Conference paper, Published paper (Refereed)
Abstract [en]

A 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 is equipped with high-resolution gamma-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 ranging from 10 µs into the ms-region. For this purpose a beam chopper based on a parallel-plate capacitor has been integrated into the accelerator beam line in order to deflect the charged-particle beam onto a tantalum beam dump. First research has been performed with the NEPTUNE spectrometer dedicated to the shape isomer search in the odd-A uranium isotopes 235U, 237U and 239U. In further experiments the population of long-lived spin isomers was investigated.

Place, publisher, year, edition, pages
Les Ulis Cedex A, France: EDP Sciences , 2008. , p. 4p. 53-56
National Category
Subatomic Physics
Research subject
Physics
Identifiers
URN: urn:nbn:se:oru:diva-11221DOI: 10.1051/ndata:07300ISBN: 978-2-7598-0090-2 (print)ISBN: 978-2-7598-0091-9 (print)OAI: oai:DiVA.org:oru-11221DiVA, id: diva2:160144
Conference
ND-2007 – International Conference on Nuclear Data for Science and Technology, Nice, France, April 22-27, 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
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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  • de-DE
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  • nn-NB
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  • Other locale
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Output format
  • html
  • text
  • asciidoc
  • rtf