Results 21 to 30 of about 7,793 (231)

A Wide Energy Range and 4π-View Gamma Camera with Interspaced Position-Sensitive Scintillator Array and Embedded Heavy Metal Bars

open access: yesSensors, 2023
(1) Background: Gamma cameras have wide applications in industry, including nuclear power plant monitoring, emergency response, and homeland security. The desirable properties of a gamma camera include small weight, good resolution, large field of view ...
Yifan Hu   +6 more
doaj   +1 more source

Study of Gamma-ray Shielding of Two Different Heavy Metals and their Combination for Cs-137 and Co-60 Sources

open access: yesEngineering, Technology & Applied Science Research, 2023
This article presents data collected by measurements of lead (Pb) and iron (Fe) and their combination as heavy shielding materials. Measurements were performed using gamma photon energies of 662, 1173, and 1332keV for the Cs-137 and Co-60 sources. The theoretical data part was calculated using WinXCom, Phy-X, and Py-MLUBF software packages.
Mohamed E. M. Eisa   +2 more
openaire   +1 more source

Circulation of 137Cs in Various Forest Plants in the Chornobyl Exclusion Zone during the Year

open access: yesEcologies, 2023
This study investigated the content of 137Cs (a long-lived radioactive isotope of caesium) in various parts of Pinus sylvestris L. (Scotch pine) and Dicranum polysetum Sw.
Nataliia Zarubina
doaj   +1 more source

Pulse-Shape Discrimination of SiPM Array-Coupled CLYC Detector Using Convolutional Neural Network

open access: yesApplied Sciences, 2022
Cs2LiYCl6: Ce3+ (CLYC) is a dual-mode gamma-neutron scintillator with a medium gamma-ray resolution and pulse-shape discrimination (PSD) capability.
Jing Lu   +6 more
doaj   +1 more source

Modelling and Monte Carlo organ dose calculations for workers walking on ground contaminated with Cs-137 and Co-60 gamma sources [PDF]

open access: yesRadiation Protection Dosimetry, 2010
A pair of walking phantoms was developed from deformable mesh phantoms to represent individuals walking on contaminated ground. The Monte Carlo N-particle extended version code was used to calculate organ doses from ground contamination scenarios involving parallel and isotropic planar sources of Cs-137 and Co-60 with concentrations of 30 kBqm(-2). For
Bin, Han   +4 more
openaire   +2 more sources

Non-destructive technique to verify clearance of pipes [PDF]

open access: yesNuclear Technology and Radiation Protection, 2010
A semi-empirical, non-destructive technique to evaluate the activity of gamma ray emitters in contaminated pipes is discussed. The technique is based on in-situ measurements by a portable NaI gamma ray spectrometer.
Savidou Anastasia, Stamatelatos Ion E.
doaj   +1 more source

A Portable Three-Layer Compton Camera for Wide-Energy-Range Gamma-ray Imaging: Design, Simulation and Preliminary Testing

open access: yesSensors, 2023
(1) Background: The imaging energy range of a typical Compton camera is limited due to the fact that scattered gamma photons are seldom fully absorbed when the incident energies are above 3 MeV.
Jipeng Zhang   +6 more
doaj   +1 more source

Radiation damage and recovery properties of common plastics PEN (Polyethylene Naphthalate) and PET (Polyethylene Terephthalate) using a137Cs gamma ray source up to 1.4 Mrad and 14 Mrad [PDF]

open access: yesJournal of Instrumentation, 2016
Polyethylene naphthalate (PEN) and polyethylene teraphthalate (PET) are cheap and common polyester plastics used throughout the world in the manufacturing of bottled drinks, containers for foodstuffs, and fibers used in clothing. These plastics are also known organic scintillators with very good scintillation properties. As particle physics experiments
Bilki, B.   +4 more
openaire   +2 more sources

Investigation of shielding of standard materials and glass for stopping 662 KeV gamma ray penetrations

open access: yesTikrit Journal of Pure Science, 2023
Calculations on shielding are required for building a gamma ray radiography exposure room to ensure that the workers are exposed to radiation. The linear attenuation coefficient ( ) is a measurement used to evaluate the radiation diffusion and ...
Berun Nasralddin Ghafoor   +1 more
doaj   +1 more source

Gamma ray attenuation for determining soil density: laboratory experiments for Environmental Physics and Engineering courses [PDF]

open access: yesRevista Brasileira de Ensino de Física, 2020
In this paper, we present in details a method for determining the soil density of disturbed samples. The mass attenuation coefficient was also evaluated by using the relation between the number of photon counts and the path length (soil density ...
L.F. Pires   +4 more
doaj   +1 more source

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