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Hoffman, C.D.; Jones, D.T.
Bethlehem Steel Corp., PA (USA)1978
Bethlehem Steel Corp., PA (USA)1978
AbstractAbstract
[en] This invention relates to an improved wide-range radiation gage having a controlled-gain photodetector for determining a material property. Hereinafter, the invention is described with reference to accurately measuring a wide range of steel plate thicknesses, or steel strip thicknesses, in a hot steel rolling mill which normally produces a steel product under variable operating conditions. However, it will become apparent that the invention is equally applicable to gaging other materials, and other properties such as weight per unit area or density, and to other industrial installations as well as to a variety of laboratory apparatus
Primary Subject
Source
17 Jan 1978; 56 p; CA PATENT DOCUMENT 1024665/A/; Available from Commissioner of Patents, Ottawa-Hull, Canada K1A 0E1
Record Type
Patent
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Va’vra, J.
SLAC National Accelerator Laboratory, Menlo Park, CA (United States). Funding organisation: USDOE (United States)2017
SLAC National Accelerator Laboratory, Menlo Park, CA (United States). Funding organisation: USDOE (United States)2017
AbstractAbstract
[en] Here, in this review article we discuss new updates on PID techniques, other than the Cherenkov method. In particular, we discuss recent efforts to develop high resolution timing, placing an emphasis on small scale test results.
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OSTIID--1416338; AC02-76SF00515; Available from http://www.osti.gov/pages/biblio/1416338; DOE Accepted Manuscript full text, or the publishers Best Available Version will be available free of charge after the embargo period; Country of input: United States
Record Type
Journal Article
Journal
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment; ISSN 0168-9002;
; v. 876(C); p. 185-193

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Chis, I.; Ciura, A.I.; Udrea, M.V.
Central Inst. of Physics, Bucharest (Romania)1988
Central Inst. of Physics, Bucharest (Romania)1988
AbstractAbstract
[en] Some theoretical considerations and practical results regarding the utilization of the ROL 50 photovoltaic cell in a leveling control system and glass quality control equipment are presented. (authors)
Original Title
Detectori fotoelectrici utilizati in instalatii de aliniere si control cu laseri
Source
Mar 1988; 15 p
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Report
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AbstractAbstract
[en] Two measurement techniques are investigated to characterize photodetector linearity. A model for the two-tone and three-tone photodetector systems is developed to thoroughly investigate the influences of setup components on the measurement results. We demonstrate that small bias shifts from the quadrature point of the modulator will induce deviation into measurement results of the two-tone system, and the simulation results correspond well to experimental and calculation results. (authors)
Primary Subject
Source
7 figs., 8 refs.; http://dx.doi.org/10.1088/0256-307X/34/11/118502
Record Type
Journal Article
Journal
Chinese Physics Letters; ISSN 0256-307X;
; v. 34(11); [4 p.]

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AbstractAbstract
[en] The importance of laser radiation sources in photodetector calibration processes is considered and shown. As an example of that, a recently made work comparing the spectral radiant flux measurement uncertainty of several absolute radiometers is described
Source
Soares, O.D.D.; Almeida, S.P.; Bernardo, L.M; SPIE - Volume 952; 878 p; 1988; p. 110-113; SPIE Society of Photo-Optical Instrumentation Engineers; Bellingham, WA (USA); Laser technologies in industry; Porto (Portugal); 6-8 Jun 1988; CONF-8806341--
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Book
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Conference
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Sun, Bo; Shi, Tielin; Liu, Zhiyong; Wu, Youni; Zhou, Jianxin; Liao, Guanglan, E-mail: zhoujianxin@hust.edu.cn, E-mail: guanglan.liao@hust.edu.cn2018
AbstractAbstract
[en] Highlights: • Morphology evolution of the MoS2 film was investigated, and the grain boundaries were clearly illustrated. • Continuous MoS2 film (2~3 mm) with high quality single crystalline grains (20~100 μm) was achieved. • Polymer electrolyte (PEO: LiClO4 =8:1) was introduced to form the side-gated FET. • The highly transparent flexible photodetector demonstrated high responsivity (33.3A/W) and good stability. In this paper, we demonstrate a large-area flexible photodetector based on vertically stacked atomically thin MoS2/graphene film. The MoS2 film is grown by CVD method. We have realized the growth of several square millimeter continuous monolayer MoS2 film via precisely control the atmosphere and temperature in the tube furnace. In experiment, the MoS2 and graphene film was transferred on PET substrate successively. Polymer electrolyte composed of PEO and LiClO4 was introduced to fabricate the side-gated flexible photodetector. The devices exhibit high performance at low operation voltage. External responsivity is about 3.5 A/W at Vgs = −1 V, Vds = 1 V with incident power of 60 μW (520 nm). Noteworthy is that the transmittance of the heterostructure at 520 nm is only about 10.5%, the internal responsivity even reaches to about 33.3 A/W, which is higher than most of the flexible photodetectors based on nanomaterials. Besides, the devices display high stability during transient on/off test. We believe the MoS2/graphene photodetector would be a promising candidate in flexible electronic system. Besides, such hybrid film design is also portable and meaningful for future photodetector investigation.
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Source
S0264127518303964; Available from http://dx.doi.org/10.1016/j.matdes.2018.05.017; Copyright (c) 2018 Published by Elsevier Ltd.; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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AbstractAbstract
No abstract available
Original Title
Stand der Silizium Photomultiplier Entwicklung fuer die Astrophysik Experimente MAGIC und EUSO
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Journal Article
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Verhandlungen der Deutschen Physikalischen Gesellschaft; ISSN 0420-0195;
; CODEN VDPEAZ; v. 40(4); p. 184

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AbstractAbstract
[en] Four types of photon counters are discussed in terms of information, fidelity, and physical reversibility: conventional photon counter, quantum counter, and their quantum nondemolition (QND) versions. It is shown that when a photon field to be measured is in an arbitrary superposition of vacuum and one-photon states, the quantum counter is the most reversible, the QND version of conventional photon counter provides the most information, and the QND version of the quantum counter causes the smallest state change. Our results suggest that the physical reversibility of a counter tends to decrease the amount of information obtained by the counter.
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(c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
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Journal Article
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AbstractAbstract
[en] The aim of this paper is a critical investigation of some correction factors in the quantum-efficiency calibration of photodetectors, in the photon-counting regime, by means of correlated photons generated through a parametric down-conversion process inside a non-linear crystal. An analysis is given of the main correction factors found in a real experimental situation, with different techniques for performing coincidence counts. (authors)
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Source
7. international conference on radiometry (NEWRAD '99); Madrid (Spain); Oct 1999
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Journal Article
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Sadigov, A. Z.; Sadigov, A. Z.; Nuruyev, S. M.; Nuruyev, I. M.
International Scientific-Practical Conference on Radiation and Chemical Safety Problems. Abstracts of Presentations2019
International Scientific-Practical Conference on Radiation and Chemical Safety Problems. Abstracts of Presentations2019
AbstractAbstract
[en] Currently, many radiation spectrometers are offered by different manufactures depending on the type of detector. It is known that stationary spectrometers have such parameters as high efficiency, low error rate, low noise factor. However, there are some problems with the use of stationary devices for the study of radiation control or expeditionary work. These problems are associated with the requirements of the devices for high operating voltage, clean laboratory conditions, temperatures of liquid nitrogen and special geometric preparation of samples for their work. Because of these problems, the use and demand of mobile radiation monitoring devices is growing. A new mobile radiation spectrometer was proposed in the work. The main part of the proposed spectrometer is a semiconductor photodetector. These photodetectors were developed by our scientific and technical group and have a wide potential for application in such fields as high-energy physics, medicine, spectrometry and radiation safety.
Primary Subject
Source
[278 p.]; 2019; p. 126-128; International Scientific-Practical Conference on Radiation and Chemical Safety Problems - Dedicated to the 80th anniversary of Prof. H. Ojagov; Baku (Azerbaijan); 5-6 Nov 2019; Available from the Institute of Radiation Problems of ANAS; 1 fig.
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Miscellaneous
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Conference
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