The decays of 5.5 min 168gLu and 6.7 min 168mLu

Levels in160Yb from the radioactive decay of160Lu

“…For heavier odd-odd Lu isotopes one or more /3-decaying excited states have been found. The 168Lu nucleus has one isomer with Tx/2 =6.7 min [2]. Two isomers were found in 166Lu with half-lives of 2.1 min and 1.4 min in addition to the ground state decay with 7"1/2=2.6 min [3].…”

On line radiochemical separation of the168mLu isomer (T1/2=6.7 min) and study of its gamma-ray spectrum

“…We observed about 171 ),-transitions belonging to 168mLu EC decay, among them 72 were known from the previous studies of CHARVET et al 4 as quoted in Nuclear Data Sheets. 5 Table 1 summarizes the energies and intensities of the Ttransitions measured in this work, and compares it to the data of CHARVET et al 4 Using T--)' coincidence data and the Ritz combination principle, as well as the data provided by nuclear reactions, we were able to built a preliminary 168yb level scheme interpreting more than 120 T-transitions between 46 excited levels. A detailed analysis of the 168yb nucleus structure should be published soon.…”

GAMMA RAYS FROM 11.8 MIN 165LU, A NEW ISOTOPE

“…No chemical separations were performed. We could identify most of the observed gamma rays as belonging to the decay of 168 Lu [2,3,4], 67 Lu [5,6], 166 Lu [7,8] or 167 Yb [9]. In experiments with 70 or 80 MeV bombarding energy we observed sev- Table 1.…”