Results 11 to 20 of about 6,222 (124)

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

Radiation 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, Juying, Zhang, Yong Hum, Na, Peter F, Caracappa, X George, Xu   +4 more
openaire   +2 more sources

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

Nuclear 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

Sensors, 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, Xiong Xiao, Ye Chen, Bin Zhang, Xinhua Ma, Xianyun Ai, Jinglun Li   +6 more
doaj   +1 more source

Estimating and accounting for 137Cs source burial through In-situ gamma spectrometry in salt marsh environments [PDF]

Journal of Environmental Radioactivity, 1996
The use of in-situ gamma ray spectrometry provides a means of rapidly estimating environmental radioactivity inventories. However, one of the principal limitations of this technique has been the influence of variations in vertical activity distribution on the observed photon fluence.
Tyler, Andrew, Sanderson, David C W, Scott, E Marian   +2 more
openaire   +2 more sources

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]

Journal 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., Onel, Y., Wetzel, J., Winn, D., Tiras, EMRAH   +4 more
openaire   +2 more sources

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

Tikrit 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, Yadgar Hussein Shwan   +1 more
doaj   +1 more source

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

Revista 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, F.A.M. Cássaro, L. Tech, L.A.A. Pereira, J.A.T. de Oliveira   +4 more
doaj   +1 more source

Gamma—Ray Counters to Monitor Radioactive Waste Packages in the MICADO Project

Instruments, 2021
One of the goals of the MICADO Euratom project is to monitor the gamma-rays emitted by radioactive waste drums in storage sites on a medium to long term basis.
Luigi Cosentino, Martina Giuffrida, Sergio Lo Meo, Fabio Longhitano, Alfio Pappalardo, Giuseppe Passaro, Paolo Finocchiaro   +6 more
doaj   +1 more source

Research on the relationship between the scattering contribution and physical factors of the reference radiation regulated by ISO 4037-1.

PLoS ONE, 2022
In the latest version of ISO 4037-1:2019 standard, the minimum dimension of a gamma radiation reference field was not clearly specified, which makes the construction of a minitype gamma reference radiation field lack of scientific basis.
Yi-Kun Qian, Yi-Xin Liu, Ben-Jiang Mao, Song Zhang, Yanan Liu, Peng Feng   +5 more
doaj   +2 more sources

Investigation of Behaviour of Titanium Diboride Reinforced Boron Carbide-Silicon Carbide Composites against Cs-137 Gamma Radioisotope Source by Using Gamma Transmission Technique

Acta Physica Polonica A, 2012
Boron carbide is a material which has wide application areas in industry including nuclear technology. Titanium diboride reinforced boron carbide‐silicon carbide composites were studied for searching of the behaviour against the gamma ray. It has been adopted that depending on their properties such improved materials can be used in nuclear technology ...
B. Buyuk, A.B. Tugrul, A.C. Akarsu, A.O. Addemir   +3 more
openaire   +1 more source