L/K-Einfangverhältnis von65Zn

A multiwire proportional counter was constructed to measureL/K-capture ratios. The length of the counter is 90 cm, the diameter 14 cm, and it works with pressures from 1 to 6 atm. — The counter was proved by measuring theL/K-capture ratio of³⁷Ar. The result obtained is 0,098±0,003, in agreement with the calculated ratio 0,100 ofBahcall and the results of many other measurements with multiwire proportional counters. — Gaseous radioactiv Zincdiethyl was the substance to determine theL/K-capture ratio of⁶⁵Zn. The result obtained is 0,111±0,006, in agreement with the calculated ratio 0,109 ofBahcall, while 0,119±0,007 measured with a multiwire proportional counter bySantos Ocampo andConway is somewhat above the calculated ratio.