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., . . . Zielińska, M. (2014). Spectroscopy on the proton drip-line : Probing the structure dependence of isospin nonconserving interactions. Physical Review C, 90 (5), 051303. doi: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. ...