Results 311 to 320 of about 382,494 (374)
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Usefulness of photon mass attenuation coefficients in elemental analysis
Nuclear Instruments and Methods, 1978Abstract Recent worldwide interest in computerised tomography has led us to carry out a reappraisal by calculation of the method of elemental analysis based on the measurement of the change in the photon mass attenuation coefficient of an element, a compound or a mixture when an impurity is introduced into the matrix.
Kypros Kouris, Nicholas M. Spyrou
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Mass attenuation coefficients of size-fractioned soil
Journal of Radioanalytical and Nuclear Chemistry Letters, 1990Experimental determinations of mass-attenuation coefficients for soils of various grain sizes are presented. The coefficient values were found to change slightly with particle size, but, overall, resemble values from other studies. The slopes of mass-attenuation coefficients vs.
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Determination of Mass Attenuation Coefficients for CuInSe2 and CuGaSe2 Semiconductors
AIP Conference Proceedings, 2007This work presents mass attenuation coefficients values of CuInSe2 and CuGaSe2 semiconductor thin films commonly used in photovoltaic devices. The mass attenuation coefficients were measured at different energies from 11.9 to 37.3 keV by using the secondary excitation method.
Ahmet Çelik +3 more
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Mass Attenuation Coefficients for Plastic Pilot-B Scintillator
Review of Scientific Instruments, 1971Mass attenuation coefficients of the commercial plastic Pilot-B scintillator have been determined as a function of energy. Sources emitting gamma rays with energies of 0.36, 0.66, 0.80, and 1.33 MeV were used. The results indicate strong absorption in the low energy region and a smooth nonlinear decrease in the mass attenuation coefficients with ...
Carl H. Hayn, Daniel E. Carroll
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Determination of Mass Attenuation Coefficient for some Technetium‐99m Compounds
Macromolecular Symposia, 2020AbstractMass attenuation is a measure of the average number of interaction between incident photons and the matter that occur in a given mass per unit area thickness of the substance. Hence, the importance of mass attenuation coefficient is found in different fields viz., radiation shielding, medical fields, aeronautical engineering, photon transport ...
B. R. Kerur +3 more
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Determination of Mass Attenuation Coefficients of Some Semiconductor and Biological Samples
Analytical Letters, 2010The mass attenuation coefficients for TlGaSe2, GaAs, GaSe, InSe, InSe:Al, InSe:Cd, InSe:Er, InSe:Ho, InSe:Sn, Si single crystals, human teeth, and different filling materials have been determined at different X-ray energies. We utilized X-ray absorption technique and a gravimetric method to determine these coefficients.
EKİNCİ, Neslihan +3 more
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Improved techniques for measuring x-ray mass attenuation coefficients
Optical Engineering, 2004We apply the x-ray extended-range technique (XERT) to measure mass attenuation coefficients over one order of magnitude more accurately than previously reported in the literature. We describe the application of the XERT to the investigation of systematic effects due to harmonic energy components in the x-ray beam, scattering and fluorescence from the ...
de Jonge, M. D. +3 more
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Measurement of mass attenuation coefficients for YBaCuO superconductor at different energies
Superconductor Science and Technology, 2004The mass attenuation coefficients for Y2O3, BaCO3, CuO compounds, and solid-state forms of YBa2Cu3O7 superconductor were determined at energies of 57.5, 59.5, 65.2, 74.8, 77.1, 87.3, 94.6, 98.4, 122, and 136 keV. The samples were irradiated using a 241Am point source emitting 59.5 keV photon energies and a 57Co point source emitting 122 and 136 keV ...
Cevik, U +4 more
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Mass attenuation coefficients of X-rays in different medicinal plants
Applied Radiation and Isotopes, 2010The mass attenuation coefficients of specific parts of several plants, (fruits, leaves, stem and seeds) often used as medicines in the Indian herbal system, have been measured employing NaI (TI)) detector. The electronic setup used is a NaI (TI) detector, which is coupled to MCA for analysis of the spectrum. A source of (241)Am is used to get X-rays in
R.B. Morabad, B. R. Kerur
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Mass attenuation coefficient of chromium and manganese compounds around absorption edge
Journal of X-Ray Science and Technology, 2009The total mass attenuation coefficient for Potassium dichromate, Potassium chromate and Manganese acetate compounds are measured at different photon energies 5.895, 6.404, 6.490, 7.058, 8.041 and 14.390 keV using Fe-55, Co-57 and $^{241}$ Am source with Copper target, radioactive sources.
B. R. Kerur +4 more
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