Abstract
The electron capture decay of Gd153 was studied by mounting the radioactive source in three different ways: Outside or in the center or built in in the lattice of a NaJ (Tl)-crystal. The PL+M+⋯/PK-capture ratio was measured for the disintegration into the 97·5 resp. 103 keV level and into the 172·5 level of Eu153: 0·34±0·02 and 0·85±0·3. These results were used to determine the disintegration energy of Gd153: 279·5±8 kev and 269 +26−16 keV. Moreover, branching ratios, log ft-values and conversion coefficients were determined.
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Herrn Professor Dr.Otto Haxel danke ich für die Anregung zu dieser Arbeit und für sein förderndes Interesse. Der Deutschen Forschungsgemeinschaft bin ich für die Bereitstellung apparativer Mittel und dem Bundesministerium für Atomkernenergie für finanzielle Unterstützung zu Dank verpflichtet.
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Leutz, H. Der Zerfall des Gd153 . Z. Physik 159, 462–477 (1960). https://doi.org/10.1007/BF01337546
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DOI: https://doi.org/10.1007/BF01337546