Unusual isospin-breaking and isospin-mixing effects in the A=35 mirror nuclei |
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| Authors: | Ekman J Rudolph D Fahlander C Zuker A P Bentley M A Lenzi S M Andreoiu C Axiotis M de Angelis G Farnea E Gadea A Kröll Th Mărginean N Martinez T Mineva M N Rossi-Alvarez C Ur C A |
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| Institution: | Department of Physics, Lund University, S-22100 Lund, Sweden. |
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| Abstract: | Excited states have been studied in 35Ar following the 16O(24Mg,1alpha1n)35Ar fusion-evaporation reaction at 60 MeV using the Ge-detector array GASP. A comparison with the mirror nucleus 35Cl shows two remarkable features: (i) A surprisingly large energy difference for the 13/2(-) states, in which the hitherto overlooked electromagnetic spin-orbit term is shown to play a major role, and (ii) a very different decay pattern for the 7/2(-) states, which provides direct evidence of isospin mixing. |
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