Recoil Decay Tagging Study Of Transitional Proton Emitters 145,146,147Tm

A. P. Robinson , C. N. Davids , D. Seweryniak , P. J. Woods , Bertram Blank (1) , M. P. Carpenter , T. Davinson , S. J. Freeman , N. Hammond , N. Hoteling , R. V. F. Janssens , Z. Liu , G. Mukherjee , C. Scholey , J. Shergur , S. Sinha , A. A. Sonzogni , W. B. Walters , A. Woehr

1 CENBG - Centre d'Etudes Nucléaires de Bordeaux Gradignan

Gamma rays from the transitional proton emitting nuclei 145,146,147Tm have been observed using the recoil-decay tagging technique. The ground state band of 147Tm was confirmed and extended and the unfavoured signature sequence was observed. A ground state rotational band with properties of a decoupled h11/2 band was observed in 145Tm. In addition coincidences between the proton fine structure line and the 2+-->0+ gamma-ray transition in 144Er were detected at the focal plane of the FMA. This is the first time that coincidences between proton radioactive decays and gamma rays have been seen. The particle decay of 146Tm has been measured with improved statistics and a rotational band similar to 147Tm has been observed.

Domaines: Physique Nucléaire Expérimentale [nucl-ex]

A. P. Robinson, C. N. Davids, D. Seweryniak, P. J. Woods, Bertram Blank, et al.. Recoil Decay Tagging Study Of Transitional Proton Emitters 145,146,147Tm. Nuclei at the Limits, 2005, AIP Conference Proceedings, 764 (764), pp.217-222. ⟨10.1063/1.1905314⟩. ⟨in2p3-00106676⟩