Abstract

Emission probabilities for the alpha particles of 5358, 5456 and 5499 keV in the decay of 238Pu have been measured using Si surface-barrier detectors. Sources of 238Pu, produced by evaporation in vacuum, were measured in various solid angles. Similar sources were used for the measurement of emission probabilities for photons, LX and prominent gamma rays, following the decay of 238Pu. These measurements were performed with calibrated high-purity Ge and Si(Li) detectors. The disintegration rates of the sources were measured by alpha counting in a well-defined small solid angle. The results also include values for the total internal conversion coefficients. The results give a consistent set of data for the prominent alpha-particle and gamma-ray transitions in the decay of 238Pu.

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