photomultiplier

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photomultiplier

[-mul′tiplī′ər]
Etymology: Gk, phos, light; L, multiplex, many folds
a device used in many radiation detection applications that converts low levels of light into electrical pulses. A bank of such tubes is used in gamma cameras to view a crystal.
References in periodicals archive ?
The basic design issue was to keep the walls of the acrylic vessel thin enough for the photomultiplier tubes to sense the light resulting from neutrino interactions, while ensuring that the vessel did not fail, causing the heavy water to commingle with the light water," Jones said.
Caption: New results of experiments at the Daya Bay neutrino detector (walls lined with photomultiplier tubes, shown) hint at the existence of a lightweight sterile neutrino, about one-millionth the mass of an electron.
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.
In the 1940s photomultiplier tubes were able to convert starlight into a measurable electric current, largely removing observer bias from the process of determining brightnesses.
is a manufacturer of opto-electronic parts such as photomultiplier tubes and opto-semiconductor devices.
Such flashes can be detected by putting a tank of liquid deep underground to shield it from most stray particles, then lining the tank with photomultiplier tubes that can pick up even the faintest bursts of light.
By using lower-cost lasers, such as those used in laser pointers, and simpler detection electronics, such as miniature photomultiplier tubes and single-chip digital signal processors, the PAC will make it possible for doctors or technicians to make diagnoses using a smaller, simpler, more rugged instrument that uses fewer consumables and generates minimal waste.
The C9143 and C9144 thermoelectric coolers can improve the signal-to-noise (S/N) ratio of 28-mm (1 1/8 inch) diameter side-on photomultiplier tubes (PMTs).
The integration of solid-state detectors into simultaneous ICP systems in place of traditional photomultiplier tubes (PMTs) has shortened the time needed for analyzing a sample and, especially in laboratories like contract-research labs, which in large part measure profits by the number of tests they can conduct, made tests more cost efficient.
About 7,000 or 60% of the 11,000 photomultiplier tubes (PMTs) attached to the neutrino detector in the town of Kamioka in the central Japanese prefecture were found broken last Nov.
As a result of radar detection research during World War II, the development of photomultiplier tubes, which had the capability of taking a few photons of light and generating millions of amplified or stored electrons, led to the development of spectrometers.
In comparison, photomultiplier tubes have O33% output uniformity.