DETERMINATION OF CONVERSION COEFFICIENTS IN THE DECAY OF BA133 BY MEANS OF SEMICONDUCTOR COUNTERS.
Abstract
The K-conversion coefficients corresponding to four transitions in Cs133 were determined applying the electron-gamma coincidence method. The gamma-rays have been detected with conventional scintillation counters. A special electron-gamma coincidence spectrometer was constructed by using, as electron detector, a lithium-drifted semiconductor counter operated into a vacuum chamber at low temperature. An analysis of electron-conversion spectra were performed by studying the line shapes of standard single lines as a function of the energy. The following values were obtained: alpha-K (0.081)=1.34 plus or minus 0.09, (K/LM=5.4 plus or minus 0.5); alpha-K (0.277)=0.054 plus or minus 0.010, (K/LM=5.5 plus or minus 1.5); alpha-K (0.305)=0.037 plus or minus 0.003; and alpha-K (0.356)=0.023 plus or minus 0.002, (K/LM=5.0 plus or minus 0.5). As a by-product the conversion coefficient for the 0.376-MeV transition was determined by analysis of the singles electron and gamma-ray spectra, its value being alpha-K (0.387)=0.028 plus or minus 0.010, K/LM-5 plus or minus 1. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1966
- Accession Number
- AD0649902
Entities
People
- A. Baseggio
- E. Szichman
- H. E. Bosch
- R. Dolinkue