Results 11 to 20 of about 184,645 (294)

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

open access: yesNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 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.
Degrelle, D, Groetz, J.-E, Mavon, C
core   +4 more sources

Photon attenuations of trichloride of gadolinium by Geant4 and XCom: a comparative study

open access: yesJournal of Taibah University for Science, 2023
The total mass attenuation coefficient of trichloride gadolinium has been investigated utilizing Geant4 compared with WinXCom simulation data at energies; 1–10 MeV.
A. Saim   +8 more
doaj   +1 more source

Towards understanding the relation between the gas and the attenuation in galaxies at kpc scales [PDF]

open access: yes, 2013
[abridged] Aims. The aim of the present paper is to provide new and more detailed relations at the kpc scale between the gas surface density and the face-on optical depth directly calibrated on galaxies, in order to compute the attenuation not only for
Baes, M.   +15 more
core   +23 more sources

Attenuation Law of Stress Waves in Cracked Rock Mass under Different Confining Pressures

open access: yesAdvances in Civil Engineering, 2019
Through theoretical analysis and indoor model tests, this paper explores the attenuation law of stress waves in the intact confined rock mass and cracked rock mass under different confining pressures, especially the relationship between the stress ...
Xiaoming Lou, Rui Luo, Jin Yu
doaj   +1 more source

Absorption Parameters for Glucose Solution for Gamma Ray at 59.54 keV

open access: yesARO-The Scientific Journal of Koya University, 2016
Photon absorption parameters for glucose solution at different concentrations such as linear attenuation coefficient, mass attenuation coefficient, effective atomic number, electron density and density determined at 59.54 keV photon energy.
Maan S. Al-Arif, Diyaree O. Kakil
doaj   +1 more source

Implications of Gamma-Ray Transparency Constraints in Blazars: Minimum Distances and Gamma-Ray Collimation [PDF]

open access: yes, 1995
We develop a general expression for the gamma-gamma absorption coefficient for gamma-rays propagating in an arbitrary direction at an arbitrary point in space above an X-ray emitting accretion disk.
Becker, Peter A., Kafatos, Menas
core   +5 more sources

Study the Effect of adding Carboxy Methyl Cellulose Powder to Low Density Polyethylene on Shielding Radiation for the X-ray

open access: yesJournal of Kufa-Physics, 2018
The attenuation measurements of  x-ray of  voltage range (21kv) for hosted polymer material were done using  x-ray unit, in order to extract the effect of adding carboxy methyl cellulose material (CMC) to low density polyethylene on x-ray radiation ...
Raed M.Shaban   +4 more
doaj   +1 more source

Study of γ-ray energy losses in the ionic crystalsusingMonte Carlo code [PDF]

open access: yesKirkuk Journal of Science, 2015
In this paper, measurements were carriedout of thecalculated attenuation of the ranges gamma rays energy(279,356,479,662) KeV and using radioactive sources (Hg203, Ba133, W189, Cs137).
Abdulhadi M. Ghelab   +2 more
doaj   +1 more source

The Application of Adaptive Time Gain Compensation in an Improved Breast Ultrasound Tomography Algorithm

open access: yesApplied Sciences, 2019
In order to better detect information about a mass in breast tissue, an ultrasound tomography algorithm based on adaptive time gain compensation (TGC) was designed.
Chang Liu   +5 more
doaj   +1 more source

DETERMINATION OF RADIATION SHIELDING PARAMETERS OF COCRFENITIALX ALLOYS BY USING RECENTLY DEVELOPED PHY-X/PSD AND EPIXS SOFTWARES

open access: yesJournal of Amasya University the Institute of Sciences and Technology, 2022
We calculate the radiation shielding parameters of CoCrFeNiTiAlx alloys which consist of mass attenuation coefficient, linear attenuation coefficient, mean free path, half-value layer, total atomic cross section, effective atomic number and effective ...
Nurettin Arpac, Murat Aygun
doaj   +1 more source

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