All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. The operation of scintillation counters and photomultiplier tubes is summarized in the following points:. These multiplied electrons are converted into an output signal by the anode. Design. Source: wikipedia.org License: Public Domain. What made you want to look up photomultiplier tube? Thon, "Fully digital arrays of silicon photomultipliers (dSiPM)--a scalable alternative to vacuum photomultiplier tubes (PMT)," in Proceedings of the 2nd International Conference on Technology and Instrumentation in Particle Physics (Tipp '11), vol. Photomultiplier Tubes An electron multiplier phototube, more commonly known as a photomultiplier tube (PMT) or simply phototube is designed to convert faint incoming light into an amplified electrical signal.. Photomultiplier Device used in photometry for the amplification of light by the release and acceleration of electrons from a sensitive surface. Photomultiplier tubes (PMTs for short) are members of the class of vacuum tubes, and more specifically vacuum phototubes, which are extremely sensitive detectors of light in the ultraviolet, visible, and near-infrared ranges of the electromagnetic spectrum. 'All Intensive Purposes' or 'All Intents and Purposes'? The SiPM features low-voltage operation, insensitivity to magnetic fields, mechanical robustness and excellent uniformity of response. A channel photomultiplier tube photocathode consists of a @C00970@ electron multiplier (CEM) system for the photoelectrons, and an @A00370@ to collect the final electron current. As … * Consists of a vaccum tube with a photocathode followed by a cascade of cathodes. Photomultiplier definition, an extremely sensitive detector of light and of other radiation, consisting of a tube in which the electrons released by radiation striking a photocathode are accelerated, greatly amplifying the signal obtainable from small quantities of radiation. Photomultiplier tubes having both of the following characteristics: a. WikiMatrix. … 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. Photomultiplier tubes (photomultipliers or PMTs for short), members of the class of vacuum tubes, and more specifically vacuum phototubes, are extremely sensitive detectors of light in the ultraviolet, visible, and near-infrared ranges of the electromagnetic spectrum. An array of these tubes is situated behind the sodium iodide crystal and may be placed directly on the crystal, connected to the crystal by light pipes, or optically coupled to the crystal with a silicone-like material. “Photomultiplier tube.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/photomultiplier%20tube. What does photomultiplier mean? The basic part of the CEM is a tube with a semiconducting inner surface. * Consists of a vaccum tube with a photocathode followed by a cascade of cathodes. When this happens, through the miracle of secondary emission, a greater number of electrons, … Photomultipliers are used to measure any process which directly or indirectly emits light. Definition of photomultiplier in the Definitions.net dictionary. Définition photomultiplier tube dans le dictionnaire anglais de définitions de Reverso, synonymes, voir aussi 'photometer',photometrically',photopolymer',photonuclear', expressions, conjugaison, exemples Most often a photocathode is semi-transparent and usually consists of a thin layer of evaporated Cs, Sb, and K atoms (or a mixture of all three). photo multipliers 1. Photomultiplier definition, an extremely sensitive detector of light and of other radiation, consisting of a tube in which the electrons released by radiation striking a photocathode are accelerated, greatly amplifying the signal obtainable from small quantities of radiation. The photomultiplier tubes--422 of them so far--are the eyes of the Antarctic Muon and Neutrino Detector Array (AMANDA), an instrument whose mission is to detect elusive subatomic particles known as neutrinos arriving from space (SN: 10/5/91, p. Icy observatory launches neutrino hunt 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. PMT is a well established technology. Advanced Functional Tumor Imaging and Precision Nuclear Medicine Enabled by Digital PET Technologies . Definition: Device for producing amplified signal from a photo-detector. 2006, S.17–18 – 2.3 Electron Multiplier (Dynode Section) ... Photomultiplier. They are widely used in medical equipment, analytical instruments and industrial measurement systems. Please tell us where you read or heard it (including the quote, if possible). A vacuum tube that converts light into electrical energy and amplifies it. These detectors work by amplifying the electrons generated by a photocathode exposed to a photon flux. Photomultiplier tubes (photomultipliers or PMT s for short), members of the class of vacuum tubes, and more specifically vacuum phototubes, are extremely sensitive detectors of light in the ultraviolet, visible, and near-infrared ranges of the electromagnetic spectrum. Ionizing radiation enters the scintillator and interacts with the scintillator material. See more. Definition of photomultiplier tube (PMT) Photomultiplier tubes (PMTs) convert photons to an electrical signal. photomultiplier tube (plural photomultiplier tubes) (electronics) A type of vacuum tube that detects electromagnetic radiation in the range from ultraviolet to infrared, including the visible spectrum, and them amplifies the detection induced current into an output signal; Synonyms . For example, section 4.1 shows spec-tral response characteristics of typical photocathodes and also gives the definition of photocathode sensitivity and its measurement proce-dure. Photomultiplier Tubes (PMTs) Light (photons) are converted into photoelectrons by absorbing them in a thin photocathode layer inside a (glass) vacuum tube. Medical Dictionary, © 2009 … Definition of Photomultiplier. Enrich your vocabulary with the English Definition dictionary Meaning of photomultiplier. 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. en.wiktionary.org. 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. Define Photomultiplier tubes. The layout shown is for an "end-on" tube. Photomultiplier Tubes (PMTs) Light (photons) are converted into photoelectrons by absorbing them in a thin photocathode layer inside a (glass) vacuum tube. What does photomultiplier mean? Kinds of photomultiplier include: Photomultiplier tube, a vacuum tube converting incident photons into an electric signal. 8 - Photomultiplier tube basics Still setting the standard For more than sixty years, photomultipliers have been used to detect low-energy photons in the UV to visible range, high-energy photons (X-rays and gamma rays) and ionizing particles using scintillators. PMT (abbreviation) Hypernyms . (physics) A device, normally in the form of a tube, that uses a photocathode to convert photons into photoelectrons which are then amplified ¹ b) Transmission Mode CONSTRUCTION The photomultiplier tube generally has a photocathode in ei-ther a side-on or a head-on configuration. The photomultiplier is an extremely sensitive light detector providing a current output proportional to light intensity. A photomultiplier tube is a vacuum tube consisting of an input window, a photocathode, focusing electrodes, an electron multiplier and an anode usu-ally sealed into an evacuated glass tube. In radiography, an electronic vacuum tube designed to convert light photons into electrical pulses. This photon is multiplied in a photomultiplier tube which converts light into an electrical signal. Examples of how to use “photomultiplier” in a sentence from the Cambridge Dictionary Labs Source: wikipedia.org License: Public Domain. Photomultiplier tubes (often abbreviated as PMT) make use of this external photoelectric effect and are superior in response speed and sensitivity (low-light-level detection). Photomultiplier Tubes (PMT) PMT is the technology state of the art at present. For high speed response, there are usually capacitors as … This chapter details various characteristics of photomultiplier tubes, including basic and performance. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. The envelope of the photomultiplier is typically quartz; only wavelengths that can be tranmitted through the window to the photocathode can be detected. Quellen ↑ a b Hamamatsu Photonics K.K. 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. PHOTONIS has … The photomultiplier tubes--422 of them so far--are the eyes of the Antarctic Muon and Neutrino Detector Array (AMANDA), an instrument whose mission is to detect elusive subatomic particles known as neutrinos arriving from space (SN: 10/5/91, p. Icy observatory launches neutrino hunt. Photomultiplier tubes synonyms, Photomultiplier tubes pronunciation, Photomultiplier tubes translation, English dictionary definition of Photomultiplier tubes. A photomultiplier is a device that converts incident photons into an electrical signal.. To increase sensitivity, a device called a photomultiplier tube (or a PMT) is used. These electrons are focused towards the electron multipliers (dynodes), which multiply the signal by secondary emission. Ionizing radiation enters the scintillator and interacts with the scintillator material. Build a city of skyscrapers—one synonym at a time. The key advantage of a photomultiplier tube is that photoelectrons are amplified using a chain of dynodes. ; The electrons are subsequently accelerated with a high voltage (hundreds of volts) to a first dynode (an electrode), where they generate several secondary electrons. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! Can you spell these 10 commonly misspelled words? IceCube, an international observatory run by 300 scientists from 12 countries, consists of more than 5,000 sensitive, The Florida team came up with a simpler approach using a cheap, low-power laser and a common light detector called a, Post the Definition of photomultiplier tube to Facebook, Share the Definition of photomultiplier tube on Twitter, Words From 1921: 100 Years Old and Still Around. When attached to the new high-gain photomultiplier tubes and strung into the array of amplifiers, pulse-height analyzers, and scalers that emerged from the Rad Lab and Los Alamos, then and only then did the scintillator and Cerenkov radiation became part of the material culture of postwar physics.. The side-on type re-ceives incident light through the side of the glass bulb, while in the head-on type, it is received through the end of the glass bulb. Information and translations of photomultiplier in the most comprehensive dictionary definitions resource on the web. Giga-fren. Photomultiplier tube, a vacuum tube converting incident photons into an electric signal. A photomultiplier tube, useful for light detection of very weak signals, is a photoemissive device in which the absorption of a photon results in the emission of an electron. photomultiplier tube definition: A vacuum tube that converts light into electrical energy and amplifies it. (Keywords: automation * microarrays * optics), Atom tinkerer's paradise: innovations to atom-imaging microscopes create labs on tips, Photon Amplification By Stimulated Emission of Radiation :-), Photon Assisted Scanning Tunnel Microscopy. They are widely used in medical equipment, analytical instruments and industrial measurement systems. A photomultiplier tube (PMT) converts a light pulse into an electrical signal of measurable magnitude. Definition: Device for producing amplified signal from a photo-detector. It is used to digitize incoming light photons prior to the creation of computerized images in nuclear medicine and other imaging modalities. PHOTOMULTIPLIER TUBES – Only Applications (HAMAMATSU PMT Handbook Appl., pdf-Datei; 692 kB) Interactive Flash Tutorials – Photomultiplier Tubes (Graphische Simulation eines PMT, engl.) A photomultiplier absorbs light emitted by the scintillator and re-emit it in the form of electrons via the photoelectric effect. Accessed 8 Jan. 2021. photomultiplier tube. Side-on tubes are also common. More Definitions for photomultiplier tube, More from Merriam-Webster on photomultiplier tube, Britannica.com: Encyclopedia article about photomultiplier tube. https://medical-dictionary.thefreedictionary.com/photomultiplier+tube, a detector that amplifies a signal (by as much as 10. Definition of photomultiplier tube (PMT) Photomultiplier tubes (PMTs) convert photons to an electrical signal. Meaning of photomultiplier. Photomultiplier detection system DC operation (contiuous light beam) AC operation (chopped light beam) [Cell definitions and equations] [Student assignment handout] [OpenOffice and Excel Version] A simulation of measurement of light intensity by a photomultiplier tube (PMT). An array of these tubes is situated behind the sodium iodide crystal and may be placed directly on the crystal, connected to the crystal by light pipes, or optically coupled … It mentions Photomultiplier tube (PMT) advantages and Photomultiplier tube (PMT) disadvantages. en.wiktionary.org (physics) A device, normally in the form of a tube, that uses a photocathode to convert photons into photoelectrons which are then amplified. The key advantage of a photomultiplier tube is that photoelectrons are amplified using a chain of dynodes. Photomultiplier tubes (PMTs) are a photon detection device that uses the photoelectric effect combined with secondary emission to convert light into an electrical signal. Photomultiplier tubes (PMTs) are a photon detection device that uses the photoelectric effect combined with secondary emission to convert light into an electrical signal. Bitte beachten Sie, dass alle Definitionen in alphabetischer Reihenfolge aufgeführt sind.Sie können rechts auf Links klicken, um detaillierte Informationen zu jeder Definition anzuzeigen, einschließlich Definitionen in Englisch und Ihrer Landessprache. A piece of 1-mm thickness optical glass was mounted at the bottom of the reservoir; photons produced during the Ru[(bpy).sub.3.sup.2+] ECL reaction passed through the glass window and were detected by a. To increase sensitivity, a device called a photomultiplier tube (or a PMT) is used. en.wiktionary.2016 [noun] A device, normally in the form of a tube, that uses a photocathode to convert photons into photoelectrons which are then amplified. The photomultiplier tube generally has a photocathode in ei-ther a side-on or a head-on configuration. photomultiplier tube Also contains definitions of: channel photomultiplier tube, strip dynode photomultiplier tube A vacuum phototube with additional amplification by electron multiplication. Test Your Knowledge - and learn some interesting things along the way. en.wiktionary.2016 [noun] plural of [i]photomultiplier tube[/i] Example sentences with "photomultiplier tubes", translation memory. • It is one of the class of vacuum tubes also known as vacuum phototube. 3rd ed. PHOTOMULTIPLIERS DEFINED Called photomultiplier tubes (PMTs) members of the class of vacuum phototubes extremely sensitive light detectors providing a current output proportional to light intensity. a photoemissive device in which the absorption of a photon results in the emission of an electron Most often a photocathode is semi-transparent and usually consists of a thin layer of evaporated Cs, Sb, and K atoms (or a mixture of all three). Learn a new word every day. Photomultiplier Tube – Principle of Operation. Photomultiplier tube • PMTs (Photomultiplier Tubes) are used for light detection of very weak signals. WikiMatrix. A photomultiplier absorbs light emitted by the scintillator and re-emit it in the form of electrons via the photoelectric effect. photomultiplier tube (plural photomultiplier tubes) (electronics) A type of vacuum tube that detects electromagnetic radiation in the range from ultraviolet to infrared, including the visible spectrum, and them amplifies the detection induced current into an output signal; Synonyms . photomultiplier tube. Search photomultiplier tube and thousands of other words in English definition and synonym dictionary from Reverso. Photomultiplier tubes operate using photoelectric effect and secondary emission. It consists of a photocathode, a series of dynodes, called a dynode chain on which a secondary-electron multiplication process occurs, and an anode. Electron multipliers ( dynodes ), which multiply the signal by the anode a signal ( by much. Dynodes in an evacuated glass enclosure art at present tubes '', translation memory of typical and. 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