Unusual isospin-breaking and isospin-mixing effects in the A=35 mirror nuclei.

作者信息

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

机构信息

Department of Physics, Lund University, S-22100 Lund, Sweden.

出版信息

Phys Rev Lett. 2004 Apr 2;92(13):132502. doi: 10.1103/PhysRevLett.92.132502.

DOI:10.1103/PhysRevLett.92.132502

PMID:15089598

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.

摘要