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Structure of high-lying levels populated in the ⁹⁶Y → ⁹⁶Zr β decay

Mashtakov, K. R., Ponomarev, V. Yu., Scheck, M., Finch, S. W., Isaak, J., Zweidinger, M., Agar, O., Bathia, C., Beck, T., Beller, J. , Bowry, M., Chapman, R., Chishti, M. M. R., Friman-Gayer, U., Gaffney, L. P., Garrett, P. E., Gregor, E. T., Keatings, J. M., Köster, U., Löher, B., McLean, A. D., O'Donnell, D., Pai, H., Pietralla, N., Rainovski, G., Ramdhane, M., Romig, C., Rusev, G., Savran, D., Simpson, G. S., Sinclair, J., Sonnabend, K., Spagnoletti, P., Tonchev, A. P. and Tornow, W. (2020) Structure of high-lying levels populated in the ⁹⁶Y → ⁹⁶Zr β decay Nature Communications.

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The nature of Jπ=1 levels of 96Zr below the β-decay Qβ value of 96Y has been investigated in high-resolution γ-ray spectroscopy following the β decay as well as in a campaign of inelastic photon scattering experiments. Branching ratios extracted from β decay allow the absolute E1 excitation strength to be determined for levels populated in both reactions. The combined data represents a comprehensive approach to the wavefunction of 1 levels below the Qβ value, which are investigated in the theoretical approach of the Quasiparticle Phonon Model. This study clarifies the nuclear structure properties associated with the enhanced population of high-lying levels in the 96Ygs β decay, one of the three most important contributors to the high-energy reactor antineutrino spectrum.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
Mashtakov, K. R.
Ponomarev, V. Yu.
Scheck, M.
Finch, S. W.
Isaak, J.
Zweidinger, M.
Agar, O.
Bathia, C.
Beck, T.
Beller, J.
Bowry, M.
Chapman, R.
Chishti, M. M.
Friman-Gayer, U.
Gaffney, L. P.
Garrett, P. E.
Gregor, E. T.
Keatings, J. M.
Köster, U.
Löher, B.
McLean, A. D.
O'Donnell, D.
Pai, H.
Pietralla, N.
Rainovski, G.
Ramdhane, M.
Romig, C.
Rusev, G.
Savran, D.
Simpson, G. S.
Sinclair, J.
Sonnabend, K.
Spagnoletti, P.
Tonchev, A. P.
Tornow, W.
Date : 2020
Funders : Science and Technology Facilities Council (STFC)
Copyright Disclaimer : © 2020 The Authors. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit
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Depositing User : Clive Harris
Date Deposited : 02 Sep 2020 17:46
Last Modified : 02 Sep 2020 17:46

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