a comparison of current measurement with photon counting in the use of photomultiplier tubes technical reprint R/P066 a comparison of current measurement with photon counting in the use of photomultiplier tubes
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Comparative assessment of the accuracy of maximum likelihood and correlated signal enhancement algorithm positioning methods in gamma camera with large square photomultiplier tubes
Introduction: The gamma cameras, based on scintillation crystal followed by an array of photomultiplier tubes (PMTs), play a crucial role in nuclear medicine. The use of square PMTs provides the minimum dead zones in the camera. The camera with square PMTs also reduces the number of PMTs relative to the detection area. Introduction of a positioning algorithm to improve the spat...
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A microcontroller-based photon counting system has been developed by the Laser and Medicine-Technology gGmbh, Berlin, Germany, in cooperation with the University of Athens. This microcontroller-based system controls, acquires, processes and stores the data from a high-resolution multichannel gas analyzer based on linear vibrational Raman scattering. The system described provides accurate photon...
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Introduction: Single photon counting detectors enable the receiver of an optoelectronic system to achieve the ultimate receiver sensitivity, the quantum limit. They are also essential in applications that rely on the quantum nature of the light, such as quantum cryptography and quantum computing. Photomultiplier tubes (PMTs) are commonly used for single photon counting because of its high gain ...
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There is a need for semiconductor-based ultraviolet photodetectors to support avalanche gain in order to realize better performance andmore effective compete with existing technologies. Wide bandgap III-Nitride semiconductors are the promising material system for the development of avalanche photodiodes (APDs) that could be a viable alternative to current bulky UV detectors such as photomultipl...
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38 LLE Review, Volume 93 Introduction Single-photon detectors (SPD’s) represent the ultimate sensitivity limit for any quantum radiation detectors. In the visible light range, the best known and most widely used are Si avalanche photodiodes (APD’s)1 and photomultiplier tubes (PMT’s).2 The operation of photomultiplier/avalanche devices is based on the electron cascade and multiplication effect, ...
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تاریخ انتشار 2005