ISSN:
0049-8246
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Physics
Notes:
The relative contribution to the production of target L x-rays by the scattered and K x-ray parts of excitation spectra from different secondary excitors in annular source geometry is estimated. In contrast to the observations of N. Singh et ul., who made similar measurements using triaxial geometry, we found only a small contribution to the production of L x-rays by the scattered part of the excitation spectrum in comparison with that by the K x-ray part. We crosschecked the observations by measuring L x-ray cross-sections for five elements, Pr, Nd, Sm, Tb and Yb, at 22.6 keV by two methods: (i) using a 109Cd radioisotope source in the direct excitation mode and (ii) using a secondary excitor of Ag with a 241Am radioisotope source as the primary excitor, in annular source geometry. The results obtained by the two methods are found to be in good agreement.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/xrs.1300180503
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