Results 1 to 10 of about 2,243,348 (294)

Detection efficiency of 18F-flourodeoxyglucose positron emission tomography/computed tomography for primary tumors in patients with carcinoma of unknown primary

open access: yesWorld Journal of Nuclear Medicine, 2020
Carcinoma of unknown primary (CUP) is defined as biopsy proven tumor metastases that remains unidentified after a thorough diagnostic evaluation. The purpose of this study was to find the detection efficiency of 18F-flourodeoxyglucose positron emission ...
Nosheen Fatima   +5 more
doaj   +2 more sources

Research on leak monitoring of the primary circuit of a pressurized water reactor based on the 13N coincidence method [PDF]

open access: yesNuclear Technology and Radiation Protection, 2022
To assess the characteristics of 13N decay, a monitoring method of the primary loop leakage rate based on the γ-γ coincidence method was proposed. In this work, sampling and measurement devices were designed, in which NaI (Tl) crystals were used
Zhao Yue, Qu Guo P., Zhou Jian L.
doaj   +1 more source

Aligning Superconducting Transition-Edge Sensors by Reflected Wave Intensity Measurement

open access: yesSensors, 2023
It is critical to accurately align a quantum photon detector such as a superconducting transition-edge sensor (TES) to an optical fiber in order to optimize its detection efficiency.
Pei-Sa Ma   +2 more
doaj   +1 more source

Anti-coincidence detector unit based on WLS fiber and SiPM readout

open access: yesHe jishu, 2023
BackgroundComplete kinematic measurements in the medium or high-energy region is a common experimental method to study the structure and properties of exotic nuclides on the neutron-rich side.
WANG Ke   +12 more
doaj   +1 more source

A mathematical model of semiconductor detector gamma-efficiency calibration for rectangular cuboid (brick-shape) sources [PDF]

open access: yesNuclear Technology and Radiation Protection, 2018
Rectangular cuboid (rectangular parallelepiped), i. e., brick-shape sources are not really common in general gamma-spectrometry practice with semiconductor detectors, where axially symmetrical sources prevail.
Mihaljević Nikola N.   +3 more
doaj   +1 more source

TrackingStorm: Visualization Tool for a Storm Detector Network (SDN) in the LF Spectrum

open access: yesBrazilian Archives of Biology and Technology, 2021
During the last year the Group of Atmospheric Electricity Phenomena (FEA/UFPR) developed a short range lightning location network based on a sensor device called Storm Detector Network (SDN), along with a set of algorithms that enables to track storms ...
Augusto Mathias Adams   +6 more
doaj   +1 more source

Calculation of alpha particles detection efficiency for polycarbonate detector using Geant4 toolkit [PDF]

open access: yesJournal of Nuclear Research and Applications, 2022
In the present work, alpha particles detection efficiency of polycarbonate detector (PC) is calculated using Geant4 simulation toolkit. A PC detector with 250 µm thickness and dimension of 2.5 × 2.5 cm2 is considered.
A. Moslehi, S. Baradaran, M. Taheri
doaj   +1 more source

Detection efficiencies of 226Ra and 232Th in different modes of counting of the PRIPYAT-2M spectrometer [PDF]

open access: yesNuclear Technology and Radiation Protection, 2009
Detection efficiencies of 226Ra and 232Th decay products, as well as corresponding minimum detectable activities in different modes of counting of the PRIPYAT-2M spectrometer (integral, when all pulses - coincident and non-coincident, are counted; non ...
Antović Nevenka M., Svrkota Nikola
doaj   +1 more source

Study of 222−220Rn Measurement Systems Based on Electrostatic Collection by Using Geant4+COMSOL Simulation

open access: yesApplied Sciences, 2022
Using Monte Carlo (with Geant4) and COMSOL simulations, the authors have defined a useful tool to reproduce the alpha spectroscopy of 222Rn, 220Rn and their ionized daughters by measurement systems based on electrostatic collection on a silicon detector,
Luigi Rinaldi   +4 more
doaj   +1 more source

Quantitative monitoring of 131I in iodine cartridge using probability density calibration method of disk source

open access: yesFushe yanjiu yu fushe gongyi xuebao, 2022
In this study, we used the integral method of the probability density function to evaluate the detection efficiency of an inhomogeneous iodine cartridge source by fitting the function relationship between the efficiency of the 131I γ-ray and the height ...
XU Feng   +5 more
doaj   +1 more source

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