Results 301 to 310 of about 382,494 (374)

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   +2 more sources

Effect of gamma irradiation on the structure characteristics and mass attenuation coefficient of MgO nanoparticles

Radiochimica Acta, 2018
In this work, the structure properties and mass attenuation coefficient of MgO nanoparticles were studied before and after gamma irradiation. The as-synthesized samples of MgO nanoparticles by sol–gel method were analyzed by XRD which suggested the ...
M. Amini, A. Vejdani Noghreiyan, Z. Dehghani, M. H. Majles Ara   +3 more
semanticscholar   +1 more source

The mass attenuation coefficients in some vanadium and nickel compounds

Journal of Quantitative Spectroscopy and Radiative Transfer, 2004
Abstract The mass attenuation coefficients for V 2 O 3 , VO 2 , VF 3 , NH 4 VO 3 , VF 4 , NiF 2 , NiCl 2 , NiCl 2 H 2 O , NiF 2 4 H 2 O , NiCl 2 6 H 2 O , Ni ( ClO 4 ) 2
Icelli, O, Erzeneoglu, Salih Zeki
openaire   +4 more sources

The measurement of total mass attenuation coefficients of CoCuNi alloys

Journal of Quantitative Spectroscopy and Radiative Transfer, 2004
Abstract The total mass attenuation coefficients for Co, Cu, Ni elements and CoCu, CoCuNi alloys were measured at different energies with 11.88, 13.93, 17.59, 21.09 and 26.00 keV emitted an 241 Am point source using transmission arrangement. The gamma rays were counted by a Si(Li) detector with a resolution of 160 eV at
Karahan, IH, Bakkaloglu, OF, Seven, Sabriye   +2 more
openaire   +3 more sources

Observations on the experimental determination of mass attenuation coefficients

Annals of Nuclear Energy, 2006
Abstract This article addresses certain aspects of planning, performing, analyzing and reporting experiments designed to determine mass attenuation coefficients. The aim is to encourage experimentalists to add value from the user’s perspective. For illustrative purposes two recent papers from this journal are taken as examples.
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   +4 more sources

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   +3 more sources

Photon mass attenuation and energy-absorption coefficients

The International Journal of Applied Radiation and Isotopes, 1982
Mass 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   +2 more sources

A method for calculating mass-attenuation coefficients of beta particles

International Journal of Radiation Applications and Instrumentation. Part A. Applied Radiation and Isotopes, 1987
Abstract A new method to calculate mass-attenuation coefficients of β− and β+ particles of energies from 0.25 to 5.0 MeV for elemental absorbers is described. This method is based upon the interactions of β− and β+ particles with matter and the use of the varying transmission limit for different absorbers.
Bhupender Singh, R.K. Batra
openaire   +2 more sources

Mass attenuation coefficients of beta particles in 4π geometry

Physica B+C, 1988
The 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, G. Subrahmanian, S.R. Thontadarya   +2 more
openaire   +2 more sources