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The Spectra of Some Beta-Excited X-Ray Sources with the Multichannel Analyzer

Published online by Cambridge University Press:  06 March 2019

Luther E. Preuss ,
Helen Horn  and
Thomas W. Keiser
Luther E. Preuss
Affiliation:
Edsel B. Ford Institute for Medical Research Detroit, Michigan
Helen Horn
Affiliation:
Edsel B. Ford Institute for Medical Research Detroit, Michigan
Thomas W. Keiser
Affiliation:
Edsel B. Ford Institute for Medical Research Detroit, Michigan
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Abstract

Three beta-excited X-ray source types (the compound, apposition, and mixture source) have been designed, and the photon spectra compared. Each source in a series was assembled using a single target element with the concentration of pure beta emitter held constant for the series. The apposition source was studied with varying target thicknesses. The compound sources were crystalline precipitates of molybdate and tungstate groups compounded with the nonearrier-free beta emitter. The mixture source consisted of a fine-milled target powder with the beta emitter adsorbed on it. Assay of the X-ray source emission has been done on the Radiation Instrument Development Laboratories (RIDL) lOQ-channel analyzer with a 3-in. Nal detector. Variation in the spectra exists between the source types of a series. Anomalous peaking occurs with the Sr90 MoO4 source emission at 29 key. The compound source, potentially productive, demonstrates poor characteristic spectra.

Type
Research Article
Information
Advances in X-Ray Analysis , Volume 4: Ninth Annual Conference on Applications of X-ray Analysis, August 10-12, 1960 , 1960 , pp. 280 - 300
Copyright
Copyright © International Centre for Diffraction Data 1960

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