K-conversion coefficient of the 53.3 keV transition and
$$\frac{K}{{L + M}}$$
-ratio of the 13.34 keV transition in73Ge
AbstractTheK-conversion coefficient of the 53.3 keV transition in73Ge was measured by coincidence techniques to be αk1=7.1 ± 0.6 indicating very good agreement with heory forM2-radiation. The
$$\frac{K}{{L + M}}$$
-ratio of the 13.34 keV transition to the ground state was determined using the same techniques. The resulting value
$$\left( {\frac{K}{{L + M}}} \right)_2 $$
=0.36 ± 0.03 supports theE2-character of this radiation and therefore a spin assignment of
$$\frac{5}{2}$$
 for the 13.34 keV level. The measured lifetime of this transition (T1,2=(2.95 ± 0.05) μsec) corresponds to a factor of 15 greater than the Weisskopf estimation for a pureE2-transition. A short discussion of a possible transfer of the collectivity of the72Ge-nucleus to the73Ge-nucleus is given.