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Ion-to-photon detector
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Ion-to-photon detector : ウィキペディア英語版
Ion-to-photon detector

An ion-to-photon detector (IPD) is a component used for detecting ions in mass spectrometry.
==Operation==
In an ion-to-photon detector, a photomultiplier tube is coated with a layer of scintillator compound, such as Rhodamine B or CsI. When the ions pass through the mass analyzer of the spectrometer, they strike the scintillator compound and cause the release of photons. These photons are then detected by the photomultiplier tube. A conversion dynode, such as a microchannel plate can also be used between the ion beam and the scintillator to increase the signal. An MCP, when struck by an ion, will release electrons which then strike the scintillator.〔Dubois, F.; Knochenmuss, R.; Zenobi, R. An ion-to-photon conversion detector for mass spectrometry. Int. J. Mass Spectrom. Ion Processes 1997, pp 89-98.〕

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