Unusual isospin-breaking and isospin-mixing effects in the A=35 mirror nuclei.
作者： J. Ekman , D. Rudolph , C. Fahlander , A. P. Zuker , M. A. Bentley
DOI: 10.1103/PHYSREVLETT.92.132502
关键词: Direct evidence 、 Mirror nuclei 、 Isospin 、 Excited state 、 Nucleus 、 SHELL model 、 Atomic physics 、 Mixing (physics) 、 Physics 、 Nuclear physics
摘要: Excited states have been studied in Ar-35 following the O-16(Mg-24,1alpha1n)Ar-35 fusion-evaporation reaction at 60 MeV using Ge-detector array GASP. A comparison with mirror nucleus Cl-35 shows two remarkable features: (i) surprisingly large energy difference for 13/2(-) states, which hitherto overlooked electromagnetic spin-orbit term is shown to play a major role, and (ii) very different decay pattern 7/2(-) provides direct evidence of isospin mixing.
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