A new direct method to determine total atomic photoelectric cross sections at 123.6 keV

Jahagirdar, H.A.; Hanumaiah, B.; Thontadarya, S.R.

doi:10.1016/0883-2889(92)90113-s

Cited by 13 publications

(1 citation statement)

References 24 publications

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“…Jayaraman and Rao [1] measured the total photon cross-sections in 15 compounds and 3 selected elements at 7 different photon energies in the range of 145-1120 keV on a good geometry set-up using a NaI(Tl) detector. A new, simple and direct method proposed to obtain fairly accurate total atomic photoelectric cross sections by measuring the K X-ray fluorescence spectrum induced by 123.6 keV gamma rays for elements in the region (42≤Z≤82) by employing a NaI(Tl) spectrometer system in a 2Π geometry set-up by Jahagirdar et al [2]. Nair et al [3] determined the total attenuation cross sections for several amino acids using 133 Ba photons in a narrow beam good geometry set-up and an HPGe detector.…”

Section: Introductionmentioning

confidence: 99%

Determination of K shell absorption parameters for some lanthanides using the X-ray attenuation method

2015

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The total attenuation cross section at the K edge, absorption jump ratio, jump factor, Davisson-Kirchner ratio and oscillator strength parameters for the K shell were determined by measuring the total attenuation cross sections around the K edge for Pr, Nd 2 O 3 and Sm. The measurements were performed in a secondary excitation geometry using the Kα 2 , Kα 1 , Kβ 1 and Kβ 2 X-rays (in the region from 31.817 to 55.293 keV) from different secondary source targets excited by the 59.54 keV γ-photons from an 241 Am annular source. It is the first time that the Davisson-Kirchner ratio values have been determined for present samples. The experimental results were compared with the theoretically calculated and other available experimental results.

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Section: Introductionmentioning

confidence: 99%