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The side-on design is used, for instance, in the type 931, the first mass-produced PMT. Besides the different photocathode materials, performance is also affected by the transmission of the window material that the light passes through, and by the arrangement of the dynodes. Many photomultiplier models are available having various combinations ...
Scintillation counters are widely used in radiation protection, assay of radioactive materials and physics research because they can be made inexpensively yet with good quantum efficiency, and can measure both the intensity and the energy of incident radiation.
A scintillation detector or scintillation counter is obtained when a scintillator is coupled to an electronic light sensor such as a photomultiplier tube (PMT), photodiode, or silicon photomultiplier. PMTs absorb the light emitted by the scintillator and re-emit it in the form of electrons via the photoelectric effect. The subsequent ...
The Porteus Maze test (PMT) is a psychological test. It is designed to measure psychological planning capacity and foresight. It is a nonverbal test of intelligence. It was developed by University of Hawaii psychology Professor Stanley Porteus. [1] The test consists of a set of mazes for the subject to solve. The mazes are of varying complexity.
In physics and in electronic engineering, dark current is the relatively small electric current that flows through photosensitive devices such as a photomultiplier tube, photodiode, or charge-coupled device even when no photons enter the device; it consists of the charges generated in the detector when no outside radiation is entering the detector.
These supercharged savings accounts offer a safe, stable way to boost your balance faster toward short-term goals — like a down payment on a new home or a summer family getaway — or to grow an ...
The Standard Model of particle physics is the theory describing three of the four known fundamental forces (electromagnetic, weak and strong interactions – excluding gravity) in the universe and classifying all known elementary particles.
A microchannel plate (MCP) is used to detect single particles (electrons, ions and neutrons [1]) and photons (ultraviolet radiation and X-rays).It is closely related to an electron multiplier, as both intensify single particles or photons by the multiplication of electrons via secondary emission. [2]