Results 11 to 20 of about 100,161 (232)

Modelling and Image Reconstruction Evaluation of a Scintillation Camera with Silicone Photomultiplier [PDF]

Journal of Biomedical Physics and Engineering, 2022
Background: Recent research on photon detection has led to the introduction of a silicone photomultiplier (SiPM) that operates at a low voltage and is insensitive to magnetic fields.
Sham FIrdaus Md Ali, M. Iqbal Saripan, Ahmad Shukri Muhammad Noor, Fakhrul Zaman Rokhani, Suhairul Hashim, Dong Xianling   +5 more
doaj   +1 more source

Path-Planning System for Radioisotope Identification Devices Using 4π Gamma Imaging Based on Random Forest Analysis

Sensors, 2022
We developed a path-planning system for radiation source identification devices using 4π gamma imaging. The estimated source location and activity were calculated by an integrated simulation model by using 4π gamma images at multiple measurement ...
Hideki Tomita, Shintaro Hara, Atsushi Mukai, Keita Yamagishi, Hidetake Ebi, Kenji Shimazoe, Yusuke Tamura, Hanwool Woo, Hiroyuki Takahashi, Hajime Asama, Fumihiko Ishida, Eiji Takada, Jun Kawarabayashi, Kosuke Tanabe, Kei Kamada   +14 more
doaj   +1 more source

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

Sensors, 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, Zhenlei Lyu, Peng Fan, Tianpeng Xu, Shi Wang, Yaqiang Liu, Tianyu Ma   +6 more
doaj   +1 more source

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

Ecologies, 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

Applied 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, Xianguo Tuo, Hongchao Yang, Yushi Luo, Haolin Liu, Chao Deng, Qibiao Wang   +6 more
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

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