Results 211 to 220 of about 48,985 (262)

Mass attenuation coefficients of β+-particles

Applied Radiation and Isotopes, 1999
Abstract The beta-spectra for the allowed transition and the first forbidden unique transition are calculated with enough accuracy. By applying them to the semiempirical transmission equation of monoenergetic electrons and positrons, we obtained the mass attenuation coefficients of beta-particles.
C.Y. Yi, H.S. Han, J.S. Jun, H.S. Chai
openaire   +1 more source

Study on dependence of partial and total mass attenuation coefficients

Journal of Quantitative Spectroscopy and Radiative Transfer, 2005
Abstract The partial and total mass attenuation coefficients μ / ρ ( cm 2 g - 1 ) of photons at energy of 1 keV–100 GeV have been calculated as a function of atomic number and photon energies using the XCOM program (version 3.1) and data base and the calculated results were compared with the measurement.
Mavi, B, Akkurt, A, Akkurt, I, Yalim, HA, Basyigit, C, Kilincarslan, S   +5 more
openaire   +4 more sources

Soil mass attenuation coefficient: Analysis and evaluation

Annals of Nuclear Energy, 2014
Abstract The mass attenuation coefficient ( μ ) is an important parameter to characterize the penetration and interaction of gamma-rays in the soil. Accurate determinations of μ are important to obtain representative values of soil physical properties by gamma-ray attenuation technique. In this study, the effect of collimator size (2–4 mm diameters)
J.C. Costa, J.A.R. Borges, L.F. Pires, R.C.J. Arthur, O.O.S. Bacchi   +4 more
openaire   +1 more source

Photon mass attenuation coefficients of importance to dosimetry

2011 IEEE Nuclear Science Symposium Conference Record, 2011
For Medical imaging and radiation therapy applications photon, of energies less than 1.3 MeV, are commonly utilized. The importance of the data of attenuation coefficients for this energy range cannot be overemphasized. In the past, there were many measurements made using multiple sources and low-resolution scintillation detectors.
Cody Crewson, Chary Rangacharyulu
openaire   +1 more source

Calculation of Mass Attenuation Coefficients of Beta Particles

Radiation Protection Dosimetry, 1998
Using the semi-empirical equations for the transmission coefficient of monoenergetic electrons, the mass attenuation coefficient of beta particles has been calculated. Beta spectra for 'allowed' and 'first forbidden' transitions are considered. The calculated mass attenuation coefficients for {beta}- emitters determined in the present study agree ...
C.Y. Yi, H.S. Han, W.K. Cho, U.J. Park, J.S. Jun, H.S. Chai   +5 more
openaire   +1 more source

Characterization of Mass Attenuation Coefficients as a Function of Experimental Geometry

Instrumentation Science & Technology, 2015
Mass attenuation coefficients of H2O, PbO, and cellulose were determined using 59.5 keV gamma energies with CdTe and NaI (Tl) detectors at five different source-sample distances. The pencil beam method was used to measure the mass attenuation coefficients. All experimental mass attenuation coefficients were compared with simulated results.
openaire   +2 more sources

Determination of Mass Attenuation Coefficients of Some Semiconductor and Biological Samples

Analytical Letters, 2010
The 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, GÜRBULAK, Bekir, DURNA, Doğan, GÜROL, Ali   +3 more
openaire   +2 more sources

Dependence of the effective mass attenuation coefficient of gold nanoparticles on its radius

Physica Medica, 2022
Several investigations are being carried since the past decade to use gold nanoparticles' (AuNP) suspensions as contrast agents (CA) for imaging in Computed Tomography. For this, the optimal size of AuNP has received considerable attention, which is addressed here.In this theoretical study, effective attenuation coefficient for a single spherical ...
Rezvan Ravanfar Haghighi, Sabyasachi Chatterjee, Vani Vardhan Chatterjee, Sedigheh Hosseinipanah, Fariba Tadrisinik   +4 more
openaire   +2 more sources

A practical method for calculation of mass-attenuation coefficients of β particles

Annals of Nuclear Energy, 2005
Abstract A practical method to calculate mass-attenuation coefficients of β particles has been described. This method is based upon the analytical conclusion of β emission energy spectrum and the range distribution of an individual β particles. The mass-attenuation coefficients are obtained as the slope of the semi-log plot of theoretical calculated ...
Gurler, ORHAN, Yalcin, S
openaire   +3 more sources

Assessing the Accuracy of Mass Attenuation Coefficients for Soft X-ray EPMA

Microscopy and Microanalysis, 2022
AbstractThe use of soft X-rays in electron probe microanalysis (EPMA) has gained renewed interest over the past decades due to the advent of new detector technologies. Because X-ray absorption is the dominant correction for soft X-rays, a reliable set of mass attenuation coefficients (MACs) is needed for accurate composition determination.
Xavier Llovet, Philipp Pöml, Aurélien Moy, John H Fournelle   +3 more
openaire   +2 more sources