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Spectroscopy of 70Kr and isospin symmetry in the T = 1 f pg shell nuclei

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Debenham, D. M., Bentley, M. A., Davies, P. J., Haylett, T., Jenkins, D. G., Joshi, P., . . . Sahin, E. (2016). Spectroscopy of 70Kr and isospin symmetry in the T = 1 f pg shell nuclei. Physical Review C, 94 (5), 054311. doi:10.1103/PhysRevC.94.054311
Published in
Physical Review C
Authors
Debenham, D. M. |
Bentley, M. A. |
Davies, P. J. |
Haylett, T. |
Jenkins, D. G. |
Joshi, P. |
Sinclair, L. F. |
Wadsworth, R. |
Ruotsalainen, Panu |
Henderson, J. |
Kaneko, K. |
Auranen, Kalle |
Badran, Hussam |
Grahn, Tuomas |
Greenlees, Paul |
Herzan, Andrej |
Jakobsson, Ulrika |
Julin, Rauno |
Juutinen, Sakari |
Konki, Joonas |
Leino, Matti |
Pakarinen, Janne |
Papadakis, Philippos |
Sorri, Juha |
Partanen, Jari |
Peura, Pauli |
Rahkila, Panu |
Sandzelius, Mikael |
Sarén, Jan |
Scholey, Catherine |
Stolze, Sanna |
Uusitalo, Juha |
David, H. M. |
Angelis, G. de |
Korten, W. |
Lotay, G. |
Mallaburn, M. |
Sahin, E.
Date
2016
Copyright
© 2016 American Physical Society. Published in this repository with the kind permission of the publisher.

 
The recoil-β tagging technique has been used in conjunction with the 40Ca(32S ,2n) reaction at a beam energy of 88 MeV to identify transitions associated with the decay of the 2+ and, tentatively, 4+ states in the nucleus 70Kr. These data are used, along with previously published data, to examine the triplet energy differences (TED) for the mass 70 isobars. The experimental TED values are compared with shell model calculations, performed with the JUN45 interaction in the fpg model space, that include a J = 0 isospin nonconserving (INC) interaction with an isotensor strength of 100 keV. The agreement is found to be very good up to spin 4 and supports the expectation for analog states that all three nuclei have the same oblate shape at low-spin. The A = 70 results are compared with the experimental and shell model predicted TED and mirror energy differences (MED) for the mass 66 and 74 systems. The comparisons clearly demonstrate the importance of the isotensor INC interaction in replicating the TED data in this region. Issues related to the observed MED values and their interpretation within the shell model are discussed. ...
Publisher
American Physical Society
ISSN Search the Publication Forum
2469-9985
Keywords
nuclear structure isospin symmetry nuclear shell models krypton
DOI
10.1103/PhysRevC.94.054311
URI

http://urn.fi/URN:NBN:fi:jyu-201611234735

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