Investigation of parity mixing in Ta and Lu by measurement of the circular polarization of γ-rays |
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Authors: | P Bock and B Jenschke |
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Institution: | Institut für Experimentelle Kernphysik der Universität und des Kernforschungszentrums Karlsruhe, Germany |
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Abstract: | The circular polarization of the 482 keV γ-radiation of 181Ta and the 343 keV γ-radiation of 175Lu was measured with a Compton polarimeter. Spurious effects arising from higher order contributions of quantum electrodynamics to the Compton scattering cross section were discovered. The results for the polarization are P = − (4.1±1.3)10−6 for 181Ta and P = − (1.5±6.0)10−6 for 175Lu. These values are corrected for instrument asymmetries, bremsstrahlung and intensity of other lines. |
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Keywords: | Radioactivity |
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