Abstract
With calibrated Ge(Li) x-ray detectorsK x rays in the conversion of the 30 keV isomeric transition in the decay of108mAg were observed in coincidence with 79 keV γ-rays. Thus, the fraction of 30 keV transitions which take place byK conversion was measured to be (2.44±0.23) × 10−2. Making use of a theoretical total conversion coefficient (K conversion contributes only a minor part of the total conversion coefficient), an experimental value of theK-conversion coefficient was obtained, αK=(1.07 ± 0.10) × 104 (where the error represents twice the standard deviation to which the error in the detector efficiency has been added linearly). This value agrees with the theory of Hager and Seltzer forM4 conversion. The energy of the cascading γ-ray was remeasured to be 79.20 ± 0.05 keV.
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Supported in part by the U.S. Atomic Energy Commission.
On leave from the University of Göttingen.
We thank Mr. Milton McLain of the Georgia Tech Research Reactor for the irradiation of the107Ag sample.
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Schmidt-Ott, W.D., Fink, R.W. TheK-conversion coefficient near threshold of the 30 keV isomeric transition in108mAg decay. Z. Physik 254, 281–285 (1972). https://doi.org/10.1007/BF01390257
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DOI: https://doi.org/10.1007/BF01390257