Results 1 to 10 of about 183,468 (342)

Representative Elementary Length to Measure Soil Mass Attenuation Coefficient [PDF]

The Scientific World Journal, 2014
With increasing demand for better yield in agricultural areas, soil physical property representative measurements are more and more essential. Nuclear techniques such as computerized tomography (CT) and gamma-ray attenuation (GAT) have been widely ...
J. A. R. Borges, L. F. Pires, J. C. Costa   +2 more
doaj   +7 more sources

Determination of mass attenuation coefficient by numerical absorption calibration with Monte-Carlo simulations at 59.54 keV

, 2016
International audienceThis study presents a numerical method in order to determine the mass attenuation coefficient of a sample with an unknown chemical composition at low energy.
D. Degrelle, C. Mavon, Jean‐Emmanuel Groetz   +2 more
openalex   +5 more sources

MEASUREMENT OF THE MASS ATTENUATION COEFFICIENTS FOR SiH4 ANDSi

Acta Physica Sinica, 1995
With X-rays produced by protons exciting elemental and compound targets the mass attenuation coefficients have been systematicaJly measured for SiH4 in the range of X-ray energy 1.486-15.165keV, for Si in 8.041-29.109keV. Not only the validity of Bragg's additivity law in the gaseous compound was verifed by experiment, but also the mass attenuation ...
WANG DA-CUN, Luo Ping-an, Yang Hua, Zhidong Wang, (1)北京师范大学低能核物理研究所,北京100875北京市辐射中心,北京100875; (2)中国科学院科技政策与管理科学研究所,北京100080   +4 more
  +4 more sources

Effect Gamma-ray on structure and mass attenuation coefficient of Hydroxyapatite Ca10(PO4)6(OH)2, in Bovine Bone

Zanco Journal of Pure and Applied Sciences
  Hydrothermal treatment procedures were employed, to generate hydroxyapatite (Ca₁₀(PO₄)₆(OH)₂  ,(HAP) powder, from the femur and ribs of bovine bone samples.
Rozhan Dilshad Haider, Mohammed Issa Hussein, Shaida Anwer Kakil   +2 more
doaj   +2 more sources

Mass Attenuation Coefficient Measurements of Photoelectric Absorption of Gamma-Rays in Copper Using Coincidence Technique

Tikrit Journal of Pure Science, 2020
The photoelectric absorption mass attenuation coefficients (m.a.c.) of  ɤ- rays in Cu are measured using a two 3"x3" NaI(Tl) detector coincidence spectrometer at 511, 1173 and 1332keV energy gates using Na-22 and Co-60 point sources. The m.a.c.
Mahmoud A. Elawi
doaj   +3 more sources

Comparison Between Mass Attenuation Coefficient of Metals (Fe, Ag, Sn, Pt, Au, Pb) According to Their Atomic Number

Journal of Studies in Science and Engineering, 2021
The paper describes the X-ray attenuation in materials according to their atomic number, using six different materials from low atomic number to higher atomic number, Iron (Fe-26) as low atomic number, silver (Ag-47), tin (Sn-50), platinum (Pt-78), gold (
Viyan Jamal Jalal, Bawar Mohammed Faraj, Sarkew Salah Abdulkareem   +2 more
doaj   +3 more sources

Calculation the mass attenuation coefficient of beta-particles through Polyvinyl chloride

Iraqi Journal of Physics, 2010
The mass attenuation coefficient for beta particles through pure Polyvinyl chloride (PVC) and flax fibers- reinforced PVC composite were investigated as a function of the absorber thickness and the absorber to source distance.
Ban M. Alshabander
doaj   +2 more sources

Modeling of the mass attenuation coefficients of X ray beams using deep neural networks (DNN) and NIST database

Brazilian Journal of Radiation Sciences
Attenuation coefficients are essential physical parameters for many applications, such as the calculation of photon penetration and energy deposition to evaluate biological shielding.
GUSTAVO BERNARDES DA SILVA, VIVIANE RODRIGUES BOTELHO, Carla Diniz Lopes Becker, Cassiana Viccari, Thatiane A. Pianoschi   +4 more
doaj   +3 more sources

Tissue Substitute Materials for the Human Colorectal Cancer Tissue [PDF]

Iranian Journal of Medical Physics, 2023
Introduction: Due to the high radiation dose used in radiotherapy, the human tissue is usually replaced with tissue substitutes in order to develop new treatment techniques.
Emmanuel Esien-umo, Joseph Obu, Ndubuisi Chiaghanam, Akwa Erim, Nneoyi Egbe   +4 more
doaj   +1 more source

Parameters and computer software for the evaluation of mass attenuation and mass energy-absorption coefficients for body tissues and substitutes

Journal of Medical Physics, 2007
The mass attenuation and energy-absorption coefficients (radiation interaction data), which are widely used in the shielding and dosimetry of X-rays used for medical diagnostic and orthovoltage therapeutic procedures, are strongly dependent on the energy
Okunade Akintunde
doaj   +1 more source