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Structure of 70Fe: Single-particle and collective degrees of freedom

Gade, A., Janssens, R. V. F., Tostevin, J. A., Bazin, D., Belarge, J., Bender, P. C., Bottoni, S., Carpenter, M. P., Elman, B., Freeman, S. J. , Lauritsen, T., Lenzi, S. M., Longfellow, B., Lunderberg, E., Poves, A., Riley, L. A., Sharp, D. K., Weisshaar, D. and Zhu, S. (2019) Structure of 70Fe: Single-particle and collective degrees of freedom Physical Review C, 99 (1), 011301. 011301-1.

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Excited states in the neutron-rich 70Fe nucleus were populated in a one-proton removal reaction from 71Co projectiles at 87 MeV/nucleon. A new transition was observed with the γ-ray tracking array GRETINA and shown to feed the previously assigned 4+ 1 state. In comparison to reaction theory calculations with shell-model spectroscopic factors, it is argued that the new γ ray possibly originates from the 6+ 1 state. It is further shown that the Doppler-reconstructed γ-ray spectra are sensitive to the very different lifetimes of the 2+ and 4+ states, enabling their approximate measurement. The emerging structure of 70Fe is discussed in comparison to LNPS-new large-scale shell-model calculations.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
Gade, A.
Janssens, R. V. F.
Tostevin, J.
Bazin, D.
Belarge, J.
Bender, P. C.
Bottoni, S.
Carpenter, M. P.
Elman, B.
Freeman, S. J.
Lauritsen, T.
Lenzi, S. M.
Longfellow, B.
Lunderberg, E.
Poves, A.
Riley, L. A.
Sharp, D. K.
Weisshaar, D.
Zhu, S.
Date : 2 January 2019
Funders : Science and Technology Facilities Council (STFC)
DOI : 10.1103/PhysRevC.99.011301
Copyright Disclaimer : © 2019 American Physical Society. Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.
Depositing User : Clive Harris
Date Deposited : 16 Jan 2019 10:46
Last Modified : 29 May 2019 13:07

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