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Measurement of total and photoelectric cross sections of rare earth elements present in compounds for 123.6 keV and 145.4 keV photons

✍ Scribed by H.A. Jahagirdar; B. Hanumaiah; S.R. Thontadarya

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 405 KB
Volume: 47
Category: Article
ISSN: 0969-806X
DOI: 10.1016/0969-806x(95)00408-p

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✦ Synopsis

Abstrae~A new, simple and direct method proposed earlier by us has been employed here to measure the total photoelectric cross sections of rare earth elements in the range 58 ~< Z ~< 66 present in compounds at 12Y6 keV and 145.4 keV photon energies. The K X-ray fluorescence intensities emitted by these elements, from irradiating their compounds by the photons of above energies, are measured using a Nal (T1) spectrometer system in a 2r~ geometrical configuration. The K X-ray fluorescence cross sections of the rare earth elements are determined, from which the total photoelectric cross sections are evaluated. Total mass attenuation coefficients of compounds for the K X-ray and the incident radiations respectively have been measured and these values were compared with the corresponding theoretical values and a good agreement between them is obtained.

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