Results 291 to 300 of about 183,468 (342)
Some of the next articles are maybe not open access.
X-Ray Mass Attenuation Coefficient of Silicon: Theory versus Experiment
Physical Review Letters, 2003We compare new experimental x-ray total mass attenuation coefficients of silicon obtained with the x-ray extended-range technique (XERT) from 5 to 20 keV with theoretical calculations and earlier experimental measurements over a 5 to 50 keV energy range.
Barnea, Z. +2 more
openaire +2 more sources
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
openaire +2 more sources
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.
, Sharanabasappa +4 more
openaire +2 more sources
Photon mass attenuation and energy-absorption coefficients
The International Journal of Applied Radiation and Isotopes, 1982Mass attenuation coefficients μ/ϱ and mass energy-absorption coefficients μ cn/ϱ are tabulated in units of m 2 kg −1 for photon energies 1 keV to 20 MeV for 40 elements ranging from hydrogen (Z= 1) to uranium (Z= 92). In addition, μ/ϱ and μ cn /ϱ values are tabulated over this same energy range for 45 mixtures and compounds of dosimetric interest ...
openaire +1 more source
Mass attenuation coefficients of beta particles in 4π geometry
Physica B+C, 1988The mass attenuation coefficients μ/ϱ of beta particles of end point energy E0 ranging from 0.16–2.3 MeV are determined adopting a 4π geometrical configuration, where the source is sandwiched between thin foils of aluminium as absorbers and the sandwich is kept in a 4π gas flow proportional counter for measuring transmitted beta particles. An empirical
R. Nathuram +2 more
openaire +1 more source
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.
openaire +1 more source
Improved techniques for measuring x-ray mass attenuation coefficients
SPIE Proceedings, 2004We have applied 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 here the application of the XERT to the investigation of a number of systematic effects which has enabled us to ensure that these recent measurements are ...
de Jonge, M. D. +3 more
openaire +1 more source
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
openaire +1 more source
Determination of Mass Attenuation Coefficient for some Technetium‐99m Compounds
Macromolecular Symposia, 2020Abstract Mass 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,
A. Manjunath +3 more
openaire +1 more source
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
openaire +2 more sources