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Low-spin excitations in the 109Tc nucleus

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Kurpeta, J., Urban, W., Płochocki, A., Rissanen, J., Pinston, J.A., Elomaa, V.-V., Eronen, T., Hakala, J., Jokinen, A., Kankainen, A., Moore, I., Penttilä, H., Saastamoinen, A., Weber, C., & Äystö, J. (2012). Low-spin excitations in the 109Tc nucleus. Physical Review C, 86(4), Article 044306. https://doi.org/10.1103/PhysRevC.86.044306
Published in
Physical Review C
Authors
Kurpeta, Jan |
Urban, W. |
Płochocki, A. |
Rissanen, Juho |
Pinston, J.A. |
Elomaa, Viki-Veikko |
Eronen, Tommi |
Hakala, Jani |
Jokinen, Ari |
Kankainen, Anu |
Moore, Iain |
Penttilä, Heikki |
Saastamoinen, Antti |
Weber, Christine |
Äystö, Juha
Date
2012
Discipline
FysiikkaPhysics
Copyright
© 2012 American Physical Society. Published in this repository with the kind permission of the publisher.

 
Monoisotopic samples of 109Mo nuclei, produced in the deuteron-induced fission of 238U and separated using the IGISOL mass separator coupled to a Penning trap, were used to perform β- and γ -coincidence spectroscopy of 109Tc. Spin and parity 5/2+ for the ground state of 109Mo, proposed earlier, are supported in the present work. Three new low-energy levels observed in 109Tc are interpreted as bandheads of the π3/2−[301], π5/2−[303], and π1/2+[431] configurations, respectively. A further three levels observed around 0.4 MeV are interpreted as K = 1/2 triaxial excitations. A similar interpretation is proposed for an analogous set of three levels observed in 107Tc in another β− decay work. The systematics of these excitations breaks down in 111Tc, most likely due to a transition from prolate to oblate deformation. An excitation at 745.0 keV in 109Tc and 850.7 keV in 107Tc is interpreted as the π7/2+[413] configuration. Quasiparticle-rotor model calculations support the proposed interpretations. ...
Publisher
American Physical Society
ISSN Search the Publication Forum
0556-2813
Keywords
ydinrakenne ydinspektroskopia kiihdytinpohjainen fysiikka nuclear structure nuclear spectroscopy accelerator-based physics ydinfysiikka
DOI
https://doi.org/10.1103/PhysRevC.86.044306
URI

http://urn.fi/URN:NBN:fi:jyu-201601271297

Publication in research information system

https://converis.jyu.fi/converis/portal/detail/Publication/22303021

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