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Isomer spectroscopy in No-254
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2006 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. T125, 73-77 p.Article in journal (Refereed) Published
Abstract [en]

Isomeric states in No-254 were investigated using a calorimetric method. Two different isomers were found with half-lives of T-1/2 = 266 +/- 2 ms and T-1/2 = 184 +/- 3 mu s, respectively. The dominant decay path of the 184 mu s isomer proceeds via states feeding the longer-lived 266 ms isomer. The 266 ms isomer in turn decays via a two-quasi-particle K = 3 band to the ground-state band. The full decay path was observed with the GREAT spectrometer located at the focal plane of the gas-filled separator RITU at the Accelerator Laboratory in Jyvskyl. This work sheds light on the two-quasi-particle structure in this transfermium nucleus.

Place, publisher, year, edition, pages
2006. Vol. T125, 73-77 p.
Keyword [en]
Great Spectrometer, Heavy-Elements, States, Decay, Fm-250, Cf-250
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-41449DOI: 10.1088/0031-8949/2006/T125/016ISI: 000238911500018ScopusID: 2-s2.0-33748471659OAI: diva2:443820
International Conference on Finite Fermionic Systems - Nilsson Model 50 Years, Lund, Sweden, June 14-18, 2005

QC 20110927

Available from: 2011-09-27 Created: 2011-09-27 Last updated: 2012-10-10Bibliographically approved

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