Beta particle detection efficiency of the radiation sensor made from a mixture of polyaniline and titanium oxide

2016 ◽  
Vol 828 ◽  
pp. 176-180 ◽  
Author(s):  
M. Tamura ◽  
H. Miyata ◽  
M. Katsumata ◽  
K. Matsuda ◽  
T. Ueno ◽  
...  
Keyword(s):  
Titanium Oxide ◽  
Detection Efficiency ◽  
Beta Particle ◽  
Particle Detection ◽  
Radiation Sensor

Vertically Integrated Amorphous Silicon Particle Sensors

2004 ◽  
Vol 808 ◽  
Author(s):  
N. Wyrsch ◽  
C. Miazza ◽  
S. Dunand ◽  
A. Shah ◽  
D. Moraes ◽  
...  
Keyword(s):  
Amorphous Silicon ◽  
Material Properties ◽  
Dark Current ◽  
Silicon Particle ◽  
Particle Beam ◽  
High Energy ◽  
Beta Particle ◽  
Particle Detection ◽  
Glass Substrates ◽  
Hydrogenated Amorphous

ABSTRACTVertically integrated particle sensors have been developed using thin-film on ASIC technology. Hydrogenated amorphous silicon n-i-p diodes have been optimized for particle detection. These devices were first deposited on glass substrates to optimize the material properties and the dark current of very thick diodes (with thickness up to 50 m). Corresponding diodes were later directly deposited on two types of CMOS readout chips. These vertically integrated particle sensors were tested in beta particle beam from 63Ni and 90Sr sources. Detection of single low- and high- energy beta particle was achieved.

scholarly journals On the Performance of an Aerosol Electrometer with Enhanced Detection Limit

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 3889 ◽  
Author(s):  
Yixin Yang ◽  
Tongzhu Yu ◽  
Jiaoshi Zhang ◽  
Jian Wang ◽  
Wenyu Wang ◽  
...  
Keyword(s):  
Detection Limit ◽  
Detection Efficiency ◽  
Particle Diameter ◽  
Electrical Current ◽  
Statistical Correlation ◽  
Measurement Noise ◽  
Mean Square ◽  
Particle Detection ◽  
Faraday Cup ◽  
Feedback Resistor

An aerosol electrometer with enhanced detection limit was developed for measuring the collected particles electrical current ranging from −50 pA to 50 pA with no range switching necessary. The detection limit was enhanced by suppressing the electric current measurement noise and improving the detection efficiency. A theoretical model for the aerosol electrometer has been established to investigate the noise effect factors and verified experimentally. The model showed that the noise was a function of ambient temperature, and it was affected by the characteristics of feedback resistor and operational amplifier simultaneously. The Faraday cup structure of the aerosol electrometer was optimized by adopting a newly designed cup-shaped metal filter which increased the surface area of the cup; thus the particle interception efficiency was improved. The aerosol electrometer performance-linearity, noise and the particle detection efficiency, were evaluated experimentally. When compared with TSI-3068B, a 99.4% ( R 2 ) statistical correlation was achieved. The results also showed that the root mean square noise and the peak-to-peak noise were 0.31 fA and 1.55 fA, respectively. The particle detection efficiency was greater than 99.3% when measuring particle diameter larger than 7.0 nm.

CVD diamond for beta particle detection in a gamma-ray background

2018 ◽  
Author(s):  
Paul Bennett ◽  
Leonard J. Cirignano ◽  
Alireza Kargar ◽  
Hadong Kim ◽  
Kanai S. Shah
Keyword(s):  
Gamma Ray ◽  
Cvd Diamond ◽  
Beta Particle ◽  
Particle Detection

scholarly journals Determination of Alpha Particle Detection Efficiency of an Imaging Plate (IP) Detector

2006 ◽  
Vol 41 (4) ◽  
pp. 272-278
Author(s):  
Naureen Mahbub RAHMAN ◽  
Takao IIDA ◽  
Hiromi YAMAZAWA ◽  
Jun MORIIZUMI
Keyword(s):  
Alpha Particle ◽  
Detection Efficiency ◽  
Imaging Plate ◽  
Particle Detection

scholarly journals A Novel Portable Gamma Radiation Sensor Based on a Monolithic Lutetium-Yttrium Oxyorthosilicate Ring

Sensors ◽  
2021 ◽  
Vol 21 (10) ◽  
pp. 3376
Author(s):  
Xi Zhang ◽  
Qiangqiang Xie ◽  
Siwei Xie ◽  
Xin Yu ◽  
Jianfeng Xu ◽  
...  
Keyword(s):  
Gamma Radiation ◽  
Gamma Rays ◽  
Detection Efficiency ◽  
Radiation Detection ◽  
Radiation Detectors ◽  
Large Field ◽  
Average Error ◽  
Detection Accuracy ◽  
Environmental Radiation ◽  
Radiation Sensor

Portable radiation detectors are widely used in environmental radiation detection and medical imaging due to their portability feature, high detection efficiency, and large field of view. Lutetium-yttrium oxyorthosilicate (LYSO) is a widely used scintillator in gamma radiation detection. However, the structure and the arrangement of scintillators limit the sensitivity and detection accuracy of these radiation detectors. In this study, a novel portable sensor based on a monolithic LYSO ring was developed for the detection of environmental radiation through simulation, followed by construction and assessments. Monte Carlo simulations were utilized to prove the detection of gamma rays at 511 keV by the developed sensor. The simulations data, including energy resolutions, decoding errors, and sensitivity, showed good potential for the detection of gamma rays by the as-obtained sensor. The experimental results using the VA method revealed decoding errors in the energy window width of 50 keV less than 2°. The average error was estimated at 0.67°, a sufficient value for the detection of gamma radiation. In sum, the proposed radiation sensor appears promising for the construction of high-performance radiation detectors and systems.

scholarly journals Evaluation of the Detection Efficiency of LYSO Scintillator in the Fiber-Optic Radiation Sensor

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Chan Hee Park ◽  
Arim Lee ◽  
Rinah Kim ◽  
Joo Hyun Moon
Keyword(s):  
Optical Fiber ◽  
Optical Fibers ◽  
Fiber Optic ◽  
Detection Efficiency ◽  
Radiation Detection ◽  
Refraction Index ◽  
Fiber Optic Sensor ◽  
Optic Radiation ◽  
Spent Fuel ◽  
Radiation Sensor

The aim of this study was to develop and evaluate fiber-optic sensors for the remote detection of gamma rays in areas that are difficult to access, such as a spent fuel pool. The fiber-optic sensor consists of a light-generating probe, such as scintillators for radiation detection, plastic optical fibers, and light-measuring devices, such as PMT. The (Lu,Y)2SiO5:Ce(LYSO:Ce) scintillator was chosen as the light-generating probe. The (Lu,Y)2SiO5:Ce(LYSO:Ce) scintillator has higher scintillation efficiency than the others and transmits light well through an optical fiber because its refraction index is similar to the refractive index of the optical fiber. The fiber-optic radiation sensor using the (Lu,Y)2SiO5:Ce(LYSO:Ce) scintillator was evaluated in terms of the detection efficiency and reproducibility for examining its applicability as a radiation sensor.

scholarly journals Probability-based particle detection that enables threshold-free and robust in vivo single-molecule tracking

2015 ◽  
Vol 26 (22) ◽  
pp. 4057-4062 ◽  
Author(s):  
Carlas S. Smith ◽  
Sjoerd Stallinga ◽  
Keith A. Lidke ◽  
Bernd Rieger ◽  
David Grunwald
Keyword(s):  
Single Molecule ◽  
False Positive ◽  
Cell Biology ◽  
Expert Knowledge ◽  
Detection Efficiency ◽  
Hypothesis Test ◽  
Yeast Cells ◽  
Particle Detection ◽  
False Positive Detection

Single-molecule detection in fluorescence nanoscopy has become a powerful tool in cell biology but can present vexing issues in image analysis, such as limited signal, unspecific background, empirically set thresholds, image filtering, and false-positive detection limiting overall detection efficiency. Here we present a framework in which expert knowledge and parameter tweaking are replaced with a probability-based hypothesis test. Our method delivers robust and threshold-free signal detection with a defined error estimate and improved detection of weaker signals. The probability value has consequences for downstream data analysis, such as weighing a series of detections and corresponding probabilities, Bayesian propagation of probability, or defining metrics in tracking applications. We show that the method outperforms all current approaches, yielding a detection efficiency of >70% and a false-positive detection rate of <5% under conditions down to 17 photons/pixel background and 180 photons/molecule signal, which is beneficial for any kind of photon-limited application. Examples include limited brightness and photostability, phototoxicity in live-cell single-molecule imaging, and use of new labels for nanoscopy. We present simulations, experimental data, and tracking of low-signal mRNAs in yeast cells.

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