Innere Konversion der 161 keV- und 223 keV-Übergänge in133Cs |
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Authors: | F Freund |
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Institution: | 1. Institut für Experimentalphysik der Ruhr-Universit?t Bochum, Bundesrepublik Deutschland
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Abstract: | Using a Ge(Li)-Si (Li)-spectrometer the 161 keV and 223 keV transitions of133Cs were investigated. TheK-conversion coefficients were deduced to beα K =0.205±0.007 andK-conversion coefficients were deduced to beα K =0.0743±0.0043, respectively. TheK/L ratio for the 161 keV transition is 4.72±0.37. From theK-conversion coefficients were deduced to beα K -values,M1 penetration factors ofλ=8.6±3.4 andλ=7.8 ?2.8 3.0 were deduced which are inconsistent with known data from angular correlation experiments (λ=40±10 andλ=90±13). The penetration factor fromK/L-measurement for the 161 keV-transition isλ=52±19. A theoretical reinvestigation of the formulas used in the literature appears recommendable. Furthermore, theK/L ratio of the 1770 keV transition of207Pb was determined experimentally to be 5.52±0.54. |
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