The l/k-capture ratio of germanium 71

Abstract

A direct measurement of the L/K-capture ratio of ^(71)Ge has been made using a special proportional counter system which avoids the effects of x-ray escape. One proportional counter is effectively enclosed by another, without any intermediate wall. With a gaseous source of germanium hydride and an argon filling at 6 atmospheres, the ratio of the L- and K-peaks from the central counter, in anticoincidence with the surrounding counter, was determined. The LjK-capture ratio was found to be 0·128^(+0·005)_(−0·003). In addition, in a separate measurement, a value of 0·53 ± 0·03 was obtained for the K-fluorescence yield of gallium.

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