photomultiplier tube

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pho·to·mul·ti·pli·er tube

a detector that amplifies a signal (by as much as 106) of electromagnetic radiation by an acceleration of electrons released from a photocathode through a series of dynodes; as each electron strikes a dynode stage, 3-4 electrons are liberated and accelerated to the subsequent dynode.

photomultiplier tube



In radiography, an electronic vacuum tube designed to convert light photons into electrical pulses. It is used to digitize incoming light photons prior to the creation of computerized images in nuclear medicine and other imaging modalities.


a hollow cylindrical organ or instrument.

chest tube
one or more tubes inserted into the pleural space to provide relief from either pneumothorax or accumulations of fluid within the thoracic cavity and to allow for re-expansion of the lung.
drainage tube
a tube used in surgery to facilitate escape of fluids. See also drain (2).
endobronchial tube
a double-lumen tube inserted into the bronchus of one lung, permitting complete deflation of the other lung; used in anesthesia and thoracic surgery.
eustachian tube
feeding tube
one for administering food into the alimentary tract. See also enterostomy tube, jejunostomy tube, tube gastrostomy, nasoesophageal tube (below).
fermentation tube
a U-shaped tube with one end closed, for determining gas production by bacteria. Called also Durham tube.
Levin tube
a gastroduodenal catheter of sufficiently small caliber to permit transnasal passage.
nasoesophageal tube
a feeding tube introduced through the nares and nasal cavity, then into the esophagus. Used in enteral feeding of dogs and cats.
otopharyngeal tube
auditory tube.
pharyngostomy tube
see pharyngostomy intubation.
photomultiplier tube
a vacuum tube that produces an electric current proportional to the intensity of light falling on its photocathode; it is sensitive enough to detect single photons.
tube rating chart
provided by the manufacturer and containing the specifications for the safe operating limits of the x-ray tube in terms of kilovolt peak, milliamps and time.
stomach tube
a flexible tube used for introducing food, medication, or other material directly into the stomach, or for removal of undesirable contents from the stomach. It can be passed into the stomach via the nose or mouth. Passage via the mouth requires the protection of a mouth speculum.
suction drainage tube
see suction drainage.
test tube
a tube of thin glass, closed at one end; used in chemical tests and other laboratory procedures.
thoracostomy tube
one inserted through an opening in the chest wall for application of suction to the pleural cavity to facilitate re-expansion of the lung in spontaneous pneumothorax. See also chest tube (above).
References in periodicals archive ?
Particles in cuvette sample stream passing through these fringes alter light signal, which is detected by photomultiplier tube (PMT).
Photomultiplier tubes (PMTs), one of Hamamatsu Photonics' core products, were designed specifically for the Super-Kamiokande neutrino detector facility at the University of Tokyo where Kajita conducted his research.
The lasers excite microsphere fluorescence which is collected, partitioned into different wavelength ranges, and then detected with photomultiplier tubes (PMT).
Caption: LUX's photomultiplier tubes, such as these, should detect flashes of light caused by putative dark matter particles striking xenon nuclei.
The LynX (TM) SiPM Module offers an attractive alternative to traditional Photomultiplier Tubes (PMTs) for a variety of Analytical Instrumentation and Life Sciences applications including Fluorescence measurement and Flow Cytometry.
Sensitive photomultiplier tubes line the detector walls, ready to amplify and record the telltale flashes.
RGB color ingredients refer to phosphors in a monitor, dyes in a transparency, photomultiplier tubes in a scanner, or charged-coupled device array processors in a digital camera.
It is lined on the top, walls and bottom by 11 129 gigantic blue-sensitive photomultiplier tubes.
These devices include photodiodes, photomultiplier tubes, scientific light sources, infrared detectors, photoconductive detectors, and image sensors.
3) Stimulated light was collected and directed onto [greater than]1 photomultiplier tubes, whose analog currents were converted into digital signals.
This gives equivalent performance to other systems using photomultiplier tubes, and is also smaller and lighter leading to a more economic unit price.
About 7,000 of the 11,000 photomultiplier tubes attached to the neutrino detector operated at the university's research facility in the city of Hida in Gifu Prefecture were found broken in November 2001 due to a chain reaction.