Isomeric states close to doubly magic 132Sn studied with JYFLTRAP
Abstract
The double Penning trap mass spectrometer JYFLTRAP has been employed to measure masses and excitation energies for 11/2- isomers in 121Cd, 123Cd, 125Cd and 133Te, for 1/2- isomers in 129In and 131In, and for 7- isomers in 130Sn and 134Sb. These first direct mass measurements of the Cd and In isomers reveal deviations to the excitation energies based on results from beta-decay experiments and yield new information on neutron- and proton-hole states close to 132Sn. A new excitation energy of 144(4) keV has been determined for 123Cdm. A good agreement with the precisely known excitation energies of 121Cdm, 130Snm, and 134Sbm has been found.
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