Mass Attenuation Coefficients Of Rare Earth Oxides And Rare Earth Elements At Energies 42.0 Kev And 59.54 KeV.
Journal Title: International Journal of engineering Research and Applications - Year 2018, Vol 8, Issue 1
Abstract
The mass attenuation coefficients were measured using gamma ray spectrometry based on NaI(Tl) scintillation detector at various energies with good collimated geometrical setup, in the gamma ray spectrometer with multichannel analyzer experiment. In the present study fourteen rare earth oxides of Yttrium, Lanthanum, Cerium, Praseodymium, Neodymium, Samarium, Europium, Gadolinium, Terbium, Dysprosium, Holmium, Erbium, Thulium and Ytterbium and also rare earth elements were chosen. The cross sections for rare earth elements were extracted at two photon energies 42.0 KeV and 59.54 KeV. The results are compared with theoretical values of Strom & Isreal and Veigele by using XCOM programme. The cross sections at 42.0 KeV for Lanthanum is very large compared to other rare earth elements. This is due to the K-edge absorption energy of Lanthanum is nearly to the incident photon energy 42.0 KeV. From these measured attenuation coefficients total photon cross sections (σcomp) in rare earth oxides were obtained. From the computed values of the total photon cross sections of rare earth oxides and the total photon cross sections of rare earth elements at 42.0 KeV & 59.54 KeV photon energies were determined. For this study 99.99% pure oxides were used. The variation in attenuation coefficient attributed to rare earth oxides and elements used.
Authors and Affiliations
S. Thomas Reddy, V. Nathanial, Y. Sandeep, B. Naresh, D. V. Krishna Reddy
Keywords
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- EP ID EP393684
- DOI 10.9790/9622-0802012226.
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