TY  - JOUR
AU  - Stanja, J. et al
AU  - Agramunt, J.
AU  - Algora, A.
PY  - 2013
DA  - 2013//
TI  - Mass spectrometry and decay spectroscopy of isomers across the Z=82 shell closure
T2  - Phys. Rev. C
JO  - Physical Review C
SP  - 054304
EP  - 7pp
VL  - 88
IS  - 5
PB  - Amer Physical Soc
AB  - Recent results from a measurement campaign studying the isomerism in neutron-deficient Tl isotopes are presented. The measurements make use of a nuclear spectroscopy setup coupled to the high-resolution Penningtrap mass spectrometer ISOLTRAP at CERN's radioactive ion-beam facility ISOLDE. The mass values of Tl-190,Tl-194 are improved and a mass-spin-state assignment is carried out. An additional mass measurement of the grandparent nuclide At-198 allows the deduction of the spin-state ordering in Tl-190. As a result, the excitation energies of the isomers in both Tl isotopes are determined for the first time to Eex(Tl-194) = 260(15) keV and E-ex(Tl-190) = 89(12) keV. Furthermore, this allows anchoring of the ground-state and isomer masses of Bi-194, Fr-202, and Ac-206, which are linked by two independent a-decay chains.
SN  - 0556-2813
UR  - https://doi.org/10.1103/PhysRevC.88.054304
DO  - 10.1103/PhysRevC.88.054304
LA  - English
N1  - WOS:000326602300001
ID  - Stanja_etal2013
ER  -