Two photomultiplier tubes are used to detect the scintillation light produced by a particle interacting with the argon.
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# The signal parameters are practically independent of external magnetic fields, in contrary to vacuum PMTs
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The supply voltage (Vb) depends on APD technology used, and typically varies between 25 V and 70 V, thus being from 30 to 50 times lower than the voltage required for a traditional photomultiplier tubes (PMTs) operation.
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They are attractive candidates for the replacement of the conventional PMT in PET and SPECT imaging since they provide high gain with low voltage and fast response, they are very compact and magnetic resonance compatible.
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# G vs Vb dependence is linear, does not follow a power law like in the case of PMTs
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# Total quantum efficiency is about 20%, being similar to a traditional PMT
The emission is also either passed through a filter or a monochromator before being detected by a photomultiplier tube, photodiode, or charge-coupled device detector.
PMT |
From there, each individual beam is then reflected on to a photomultiplier tube (PMT), where the photons are converted into an electronic signal to be recorded to tape.
The remaining Wirral and Chester Crosville operations were sold in February 1990 to PMT who retained the Crosville name, however it passed into history ten years later with the corporate First Group branding.
In 2007, former PMT leader, 2002 presidential candidate and then ADEMA vice-president Soumeylou Boubèye Maïga openly opposed their support of the ruling Alliance for Democracy and Progress of president Amadou Toumani Touré.
In 2010, PMT Italia has founded PMT Winding Oy in Tehtaankatu, Valkeakoski, Finland.
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PMT Italia, whose name means Paper Machinery Technology, supports the paper industry by means of mechanical engineering, automation engineering, on site services and manufacturing of machines for all grades of paper.