photomultiplier tube


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photomultiplier tube

[¦fōd·ō′məl·tə‚plī·ər ¦tüb]
(electronics)

photomultiplier tube

A vacuum tube that converts light into electrical energy and amplifies it. Photomultiplier tubes are used in high-end drum scanners, because they are more sensitive to light than the CCD elements used in lower-cost devices.
References in periodicals archive ?
Our detection system consisted of a photomultiplier tube (PMT) operated as a single photon-counting detector along with pre-processing electronics (pulse-shaping and signal discrimination), pulse-counting hardware, and input into a computer for data acquisition, display, and logging for offline analysis.
Factoring in both the positional dependence of the effciency and the beta-decay spectrum of the electrons, we obtain a detection effciency of (48 [+ or -] 6) % when photomultiplier tube (PMT) threshold levels are set to three or more photoelectrons (see Ref.
5) With the addition of powerful lasers, highly sensitive photomultiplier tubes (PMTs), and computer technology, the sensitivity and accuracy of crude flow cytometers were greatly improved.
The camera setup includes a PC stack to digitally record images and a sensitive light detector known as a photomultiplier tube.
Each flash of light is a single photon, which the system then detects with a photomultiplier tube or avalanche photodiode.
Detection of the LOCI signal is accomplished by alternately exposing the PCR tube to a laser light source and then to a photomultiplier tube to sum the chemiluminescent decay (2).
Tenders invited for Red-sensitive photomultiplier tube
001 Abs * -2 to 4 Abs (UV-VIS region) steps) Detector Photomultiplier tube (PMT) Photomultiplier/Cooled PbS Thermo Fisher Varian Scientific Evolution Array UV-Visible Cary 5000 Spectrophotometer Wavelength range 190-1100 nm 175-3300 nm Wavelength accuracy * [+ or -] 0.
This three-detector instrument is equipped with a photomultiplier tube, indium gallium arsenide and lead sulfide detector.
A small-volume LOCI reader was constructed by modifying a fluorescence microscope to allow sample illumination with a 678 nm laser and monitoring of chemiluminescence with a photomultiplier tube.
2]* relaxes to its ground state, it emits a 600 nm photon (equation 3) which is detected by a photomultiplier tube that forms one side of the reaction chamber.
Tenders invited for Supply installation , commissioning and warranty of photomultiplier tube and si detector with housing and power supply