Abstract
Theγ-radiation of the nuclear isomer Ir191m (T 1/2=4.5 sec) has been investigated with the aid of a scintillation fast-slow coincidence-spectrometer. Theγ-rays of the 42 keV-transition have been measured for the first time. The conversion coefficient α of this transition was found to be α = 13500 −5200+21100 in acceptable agreement with the value taken from the tables ofRose under the assumption of anE3-transition. Thus this assignment proposed earlier by other authors has been confirmed. TheK-conversion coefficient of the 129 keV-transition has been remeasured yielding α K =2.32±0.06.
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D 7 (gekürzt).
Herrn Prof. Dr. A.Flammersfeld danke ich für die Anregung zu dieser Arbeit und für zahlreiche fördernde Hinweise.
Dem Niedersächsischen Kultusministerium und dem Bundesatomministerium gebührt Dank für zusätzliche Mittel.
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Lange, D. Untersuchung des Iridium-191m-Zerfalls. Z. Physik 183, 90–99 (1965). https://doi.org/10.1007/BF01384438
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DOI: https://doi.org/10.1007/BF01384438