Abstract
Postaccelerated58Ni beams from the Munich tandem have been used to study the residual activities of the compound reactions58Ni→90Zr,91Zr,92Zr,93Nb,92Mo,94Mo with the help ofγ excitation functions, multi spectrum analyses ofγ radiation,γγ coincidences and the measurement of the ratio EC/gb +. Beta decay schemes for the following new isotopes or isomers have been derived:144Tb (6−, 7−) 4.5±0.5 s144Tb 1+ 1.5±1 s145Tb (11/2−) 29 s146Tb 1+ 8±4 s145Dy 13.6±1 s146Dy 0+ 29±3 s147Ho (11/2−) 5.8±0.4 s148Ho 1+ 2.2±1.1 s150Ho (2−) 72±4 s148Er 0+ 4.5±0.4 s150Er 0+ 18.5±0.7 s148TmJ≧6 0.7±0.2 s150Tm (4−, 5−) 3.5±0.6 s
TheQ EC value for theβ decay of150Er to150Ho has been measured to be 4,010±80 keV with respect to the 2− state in150Ho.
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Supported by the “Bundesministerium für Forschung und Technologie”
Fellow of the “Alexander von Humboldt-Stiftung” 1980–1981, on leave of absence from the Institute of Nuclear Research of Shanghai, China
The authors would like to thank Prof. H. Morinaga for his continued advice throughout the course of this investigation and for many helpful and stimulating discussions. The authors also would like to thank Dr. W. Schollmeier. P. Kubik, P. Komninos, S. Gustavsson and R. Geier for their help during the operation of the booster and U. Heim for her help during the analysis of the data.
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Nolte, E., Gui, S.Z., Colombo, G. et al. Very proton rich nuclei withN≈82. Z Physik A 306, 223–234 (1982). https://doi.org/10.1007/BF01415124
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DOI: https://doi.org/10.1007/BF01415124