Spectroscopy on the proton drip-line : Probing the structure dependence of isospin nonconserving interactions
Henderson, J., Jenkins, D. G., Kaneko, K., Ruotsalainen, P., Sarriguren, P., Auranen, K., Bentley, M. A., Davies, P. J., Görgen, A., Grahn, T., Greenlees, P., Hay, A., Henry, T. W., Herzan, A., Jakobsson, U., Julin, R., Juutinen, S., Konki, J., Leino, M., . . . Zielińska, M. (2014). Spectroscopy on the proton drip-line : Probing the structure dependence of isospin nonconserving interactions. Physical Review C, 90(5), Article 051303. https://doi.org/10.1103/PhysRevC.90.051303
Published inPhysical Review C
Hay, A. |
© 2014 American Physical Society. Published in this repository with the kind permission of the publisher.
The recoil-β tagging technique was used to identify transitions associated with the decay of the 2+ and, tentatively, the 4+ excited states in 74Sr. Combining these results with published data for the A = 74 isobars, triplet energy differences (TEDs) have been extracted, the heaviest case for which these values have been evaluated. State-of-the-art shell-model calculations using the JUN45 interaction and incorporating a J = 0 isospin nonconserving (INC) interaction with an isotensor strength of 100 keV can reproduce the trend in the TED data, with particularly good agreement for the 2+ state. This agreement for the TED data taken together with the fact that agreement has also been shown between shell-model calculations with the same strength of INC interaction in the f7/2 shell and recently for A = 66 strongly suggests that such an interaction exists throughout the nuclear chart and cannot have a strong dependence on details of nuclear structure such as which nuclear orbitals are occupied. It also supports the hypothesis that only a J = 0 component of the INC interaction need be included to explain the observed TEDs. ...