| Autor: |
Hansen, H. H., Mouchel, D. |
| Zdroj: |
Zeitschrift für Physik A Hadrons and Nuclei; September 1976, Vol. 276 Issue: 3 p303-307, 5p |
| Abstrakt: |
The internal conversion process of the 165.8 keV?-ray transition in the decay of139Ce has been reinvestigated. The emission rate of the K-shell internal conversion electrons was determined by an (electron)-(X-ray)-(X-ray) triple coincidence experiment using a magneticß-spectrometer and two Si(Li) detectors. From electron spectra recorded as a function of momentum conversion electron ratios were also determined. The disintegration rate of the sources has been taken from 4pß-? coincidence experiments. The following results were obtained: the probability for internal conversion in theK-shellkK=0.1719±0.0020 and the conversion ratiosK/(L + M+...=5.84±0.17,K/L=7.45±0.20, andL/(M+...)=3.63±0.29. The internal conversion coefficients deduced area=(0.2520+0.0050),aK=(0.2152±0.0033), andaL=(0.0289±0.0012). The results are in good agreement with previous experimental values and with theoretical data calculated for a M1 transition of 165.8 keV in139La. |
| Databáze: |
Supplemental Index |
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