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Evidence for non-yrast states in 254No |
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| Authors: | S Eeckhaudt P T Greenlees N Amzal J E Bastin E Bouchez P A Butler A Chatillon K Eskola J Gerl T Grahn A Görgen R -D Herzberg F P Hessberger A Hürstel P J C Ikin G D Jones P Jones R Julin S Juutinen H Kettunen T L Khoo W Korten P Kuusiniemi Y Le Coz M Leino A -P Leppänen P Nieminen J Pakarinen J Perkowski A Pritchard P Reiter P Rahkila C Scholey Ch Theisen J Uusitalo K Van de Vel J Wilson |
| Institution: | 1. Department of Physics, University of Jyv?skyl?, Jyv?skyl?, Finland 2. Oliver Lodge Laboratory, University of Liverpool, Liverpool, UK 3. DAPNIA/SPhN, CEA-Saclay, Saclay, France 4. CERN-ISOLDE, Geneva, Switzerland 5. Department of Physics, University of Helsinki, Helsinki, Finland 6. GSI, Darmstadt, Germany 7. Argonne National Laboratory, Argonne, IL, USA 8. IKP, University of Cologne, Cologne, Germany |
| Abstract: | Evidence for the decay of non-yrast states in 254No has been observed for the first time in an experiment performed at the University of Jyv?skyl?. The experiment employed the JUROGAM array of germanium detectors coupled to the gas-filled recoil separator RITU and the focal-plane spectrometer GREAT. The ground-state rotational band has been tentatively extended up to a spin of 24ℏ and has a smoothly behaving dynamical moment of inertia. It is speculated that the observation of high-energy γ-rays is due to the decay of a K = 3 band-head state. |
| Keywords: | 23 20 Lv γ transitions and level energies 27 90 +b 220≤ A 29 30 -h Spectrometers and spectroscopic techniques |
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