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 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 Tubes (PMT) PMT is the technology state of the art at present. 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. 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 (PMTs) are a photon detection device that uses the photoelectric effect combined with secondary emission to convert light into an electrical signal. Ionizing radiation enters the scintillator and interacts with the scintillator material. The photomultiplier tube converts the light into an electrical signal, and the shape of the electrical pulse reveals which layer is flashing, and thus which type of radiation was detected. b) Transmission Mode CONSTRUCTION The photomultiplier tube generally has a photocathode in ei-ther a side-on or a head-on configuration. The key advantage of a photomultiplier tube is that photoelectrons are amplified using a chain of dynodes. Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free! https://medical-dictionary.thefreedictionary.com/photomultiplier+tube, a detector that amplifies a signal (by as much as 10. 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. Enrich your vocabulary with the English Definition dictionary Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. 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. The layout shown is for an "end-on" tube. Photomultiplier Tubes (PMTs) sind Photonendetektionsgeräte, die den photoelektrischen Effekt in Kombination mit Sekundäremission nutzen, um Licht in ein elektrisches Signal umzuwandeln. It is used to digitize incoming light photons prior to the creation of computerized images in nuclear medicine and other imaging modalities. 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. The photomultiplier is an extremely sensitive light detector providing a current output proportional to light intensity. 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. Photomultiplier Tube – Principle of Operation. photomultiplier tube. Kinds of photomultiplier include: Photomultiplier tube, a vacuum tube converting incident photons into an electric signal. PHOTOMULTIPLIER TUBES – Only Applications (HAMAMATSU PMT Handbook Appl., pdf-Datei; 692 kB) Interactive Flash Tutorials – Photomultiplier Tubes (Graphische Simulation eines PMT, engl.) What does photomultiplier mean? A photomultiplier absorbs light emitted by the scintillator and re-emit it in the form of electrons via the photoelectric effect. Advanced Functional Tumor Imaging and Precision Nuclear Medicine Enabled by Digital PET Technologies . What made you want to look up photomultiplier tube? * Consists of a vaccum tube with a photocathode followed by a cascade of cathodes. a photoemissive device in which the absorption of a photon results in the emission of an electron They have a high internal gain and are sensitive detectors for low-intensity applications such as fluorescence spectroscopy. See more. Figure 2-1 shows the schematic construction of a photomultiplier tube. A photomultiplier tube is a non-thermionic vacuum tube, usually made of glass, that converts very small light signals into a measurable electric current. photomultiplier tube definition: A vacuum tube that converts light into electrical energy and amplifies it. These example sentences are selected automatically from various online news sources to reflect current usage of the word 'photomultiplier tube.' Photomultiplier tubes synonyms, Photomultiplier tubes pronunciation, Photomultiplier tubes translation, English dictionary definition of Photomultiplier tubes. 3rd ed. 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. The operation of scintillation counters and photomultiplier tubes is summarized in the following points: Scintillation Counter – Principle of Operation. 1. Please tell us where you read or heard it (including the quote, if possible). photomultiplier Definitions. Introduction: • PMTs (Photomultiplier Tubes) are used for light detection of very weak signals. Test Your Knowledge - and learn some interesting things along the way. These multiplied electrons are converted into an output signal by the anode. Photomultiplier tubes having both of the following characteristics: a. WikiMatrix. Meaning of photomultiplier. 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. (physics) A device, normally in the form of a tube, that uses a photocathode to convert photons into photoelectrons which are then amplified ¹ The basic part of the CEM is a tube with a semiconducting inner surface. … Photomultipliers are used to measure any process which directly or indirectly emits light. 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. Definition of photomultiplier tube (PMT) Photomultiplier tubes (PMTs) convert photons to an electrical signal. These detectors work by amplifying the electrons generated by a photocathode exposed to a photon flux. 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. When light is incident on the photocathode, it emits electrons into the vacuum tube. 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 . Definition: Device for producing amplified signal from a photo-detector. The elements constituting the reader used in the chemiluminescent assays were as follows: two lasers for reaction mixture illumination; an illumination chamber; optical train with collimating lenses, filter wheel, and shutter; The BlankCell procedure serves to calibrate the chemiluminescence signal received by the, The light drives the photoelectric effect in a, Using readings from a sensitive light detector called a, So now, you're dealing with the problem of getting your signal above the noise level of the, Beth models are equipped with three detectors including a, Czerepinski notes, "that along with being designed for simultaneous acquisition of Cy3 and Cy5 the device features real-time control of a, 31 Physical Review Letters, the duo described using a sensitive, Dictionary, Encyclopedia and Thesaurus - The Free Dictionary, the webmaster's page for free fun content, Determination of sulpiride by capillary electrophoresis with end-column electrogenerated chemiluminescence detection, Quantification of DNA using the luminescent oxygen channeling assay, Dally BlankCell procedure in Elecsys 2010 improves the reproducibility of thyrotropin, free thyroxine, and triidothyronine, New, renewed, and revived confocal: higher performance and more affordable confocal microscopes now provide biologists with views into living cells that they've never had before, UV-Vis-NIR Spectrophotometer with deep measurement capabilities, Photomultiplier tube delivers high-anode sensitivity, Creating imaging platforms for discovery: in the high-tech, highly competitive world of microarray scanners, researchers and lab managers have an assortment of imaging systems to choose from ... and the race just got more crowded. Photomultiplier Tubes (PMTs) Light (photons) are converted into photoelectrons by absorbing them in a thin photocathode layer inside a (glass) vacuum tube. 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). The key advantage of a photomultiplier tube is that photoelectrons are amplified using a chain of dynodes. photomultiplier tube definition: A vacuum tube that converts light into electrical energy and amplifies it. Photomultiplier Tubes (PMTs) Light (photons) are converted into photoelectrons by absorbing them in a thin photocathode layer inside a (glass) vacuum tube. Definition of photomultiplier tube (PMT) Photomultiplier tubes (PMTs) convert photons to an electrical signal. Definition of Photomultiplier Tube (PMT): A part of the PET detector that receives the electromagnetic energy from the scintillator cristal and transforms that energy into electric pulses. Ein Photovervielfacher absorbiert das vom Szintillator emittierte Licht und gibt es über den photoelektrischen Effekt in Form von Elektronen wieder ab . “Photomultiplier tube.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/photomultiplier%20tube. photo multipliers 1. en.wiktionary.org. This conversion is done in two stages: firstly the photons are absorbed, producing free electrons, and secondly a cascade amplification takes place. To increase sensitivity, a device called a photomultiplier tube (or a PMT) is used. It is used to digitize incoming light photons prior to the creation of computerized images in nuclear medicine and other imaging modalities. It mentions Photomultiplier tube (PMT) advantages and Photomultiplier tube (PMT) disadvantages. : Photomultiplier Tubes – Basics and Applications. 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. Photomultipliers are used to measure any process which directly or indirectly emits light. 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). The side-on type re-ceives incident light through the … This chapter details various characteristics of photomultiplier tubes, including basic and performance. • It is one of the class of vacuum tubes also known as vacuum phototube. 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. All content on this website, including dictionary, thesaurus, literature, geography, and other reference data is for informational purposes only. Scintillation Counter – Principle of Operation. photomultiplier tube Also contains definitions of: channel photomultiplier tube, strip dynode photomultiplier tube A vacuum phototube with additional amplification by electron multiplication. Photomultiplier Tubes (PMT) PMT is the technology state of the art at present. Section 4.2 explains dynode types, structures and typical char-acteristics. They have a high internal gain and are sensitive detectors for low-intensity applications such as fluorescence spectroscopy . Définition photomultiplier tube dans le dictionnaire anglais de définitions de Reverso, synonymes, voir aussi 'photometer',photometrically',photopolymer',photonuclear', expressions, conjugaison, exemples • It is photo-emissive device in which absorption of photon results in emission of electron. See more. A photomultiplier is a device that converts incident photons into an electrical signal.. (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. Definition of photomultiplier in the Definitions.net dictionary. Ionizing radiation enters the scintillator and interacts with the scintillator material. photomultiplier tube. The photomultiplier tube generally has a photocathode in ei-ther a side-on or a head-on configuration. Definition of photomultiplier tube : a vacuum tube that detects light especially from dim sources through the use of photoemission and successive instances of secondary emission to produce enough electrons to generate a useful current — called also photomultiplier Examples of photomultiplier tube in a Sentence In radiography, an electronic vacuum tube designed to convert light photons into electrical pulses. • It is photo-emissive device in which absorption of photon results in emission of electron. 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. They are widely used in medical equipment, analytical instruments and industrial measurement systems. THIS DEFINITION IS FOR PERSONAL USE ONLY. 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 . Information and translations of photomultiplier in the most comprehensive dictionary definitions resource on the web. Meaning of photomultiplier. 'All Intensive Purposes' or 'All Intents and Purposes'? PHOTO MULTIPLIERS BY, MD ANAS AHMAD 2. A photomultiplier tube (PMT) converts a light pulse into an electrical signal of measurable magnitude. Source: wikipedia.org License: Public Domain. 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. 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 tubes are used in high-end drum scanners, because they are more sensitive to light than the CCD elements used in lower-cost devices. Definition of Photomultiplier. PHOTOMULTIPLIER TUBES principles & applications Re-edited September 2002 by S-O Flyckt* and Carole Marmonier**, Photonis, Brive, France *Email: so.flyckt@photonis.com **Email: c.marmonier@photonis.com i. FOREWORD 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) … 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 … Photomultiplier tube • PMTs (Photomultiplier Tubes) are used for light detection of very weak signals. 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. Photomultiplier tubes operate using photoelectric effect and secondary emission. photomultiplier tube. Accessed 8 Jan. 2021. WikiMatrix. In radiography, an electronic vacuum tube designed to convert light photons into electrical pulses. To increase sensitivity, a device called a photomultiplier tube (or a PMT) is used. Side-on tubes are also common. 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. It consists of a photocathode, a series of dynodes, called a dynode chain on which a secondary-electron multiplication process occurs, and an anode. 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.. These detectors work by amplifying the electrons generated by a photocathode exposed to a photon flux. The prime features of the circular-cage are compactness and fast time response. Send us feedback. Build a city of skyscrapers—one synonym at a time. 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. The operation of scintillation counters and photomultiplier tubes is summarized in the following points:. Design. Examples of how to use “photomultiplier” in a sentence from the Cambridge Dictionary Labs Definition of photomultiplier in the Definitions.net dictionary. A vacuum tube that converts light into electrical energy and amplifies it. photomultiplier tubes Definitions. This information should not be considered complete, up to date, and is not intended to be used in place of a visit, consultation, or advice of a legal, medical, or any other professional. en.wiktionary.2016 [noun] plural of [i]photomultiplier tube[/i] Example sentences with "photomultiplier tubes", translation memory. 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 Define Photomultiplier tubes. A photomultiplier absorbs light emitted by the scintillator and re-emit it in the form of electrons via the photoelectric effect. Photomultiplier Tube (PMT), the Silicon Photomultiplier now offers a highly attractive alternative that combines the low-light detection capabilities of the PMT while offering all the benefits of a solid-state sensor. Giga-fren. 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). Learn a new word every day. 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). photomultiplier tube definition in English dictionary, photomultiplier tube meaning, synonyms, see also 'photometer',photometrically',photopolymer',photonuclear'. What is Photomultiplier Tube (PMT)? 'Nip it in the butt' or 'Nip it in the bud'. Can you spell these 10 commonly misspelled words? 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. For high speed response, there are usually capacitors as … The photomultiplier is an extremely sensitive light detector providing a current output proportional to light intensity. PMT (abbreviation) Hypernyms . Alle Definitionen von PMT Wie oben erwähnt, sehen Sie in der folgenden Tabelle alle Bedeutungen von PMT. When this happens, through the miracle of secondary emission, a greater number of electrons, … ; The electrons are subsequently accelerated with a high voltage (hundreds of volts) to a first dynode (an electrode), where they generate several secondary electrons. 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. As … In a photomultiplier tube, electrons are emitted from a photocathode and accelerated in a beam that strikes the dynode, which is a polished metal electrode suitably biased. ... Photomultiplier. Search photomultiplier tube and thousands of other words in English definition and synonym dictionary from Reverso. A photomultiplier contains various parts in a vacuum glass tube, in which the following happens: Light is absorbed on a photocathode and generates free photoelectrons (external photoelectric effect). The envelope of the photomultiplier is typically quartz; only wavelengths that can be tranmitted through the window to the photocathode can be detected. Source: wikipedia.org License: Public Domain. Photomultiplier tube, a vacuum tube converting incident photons into an electric signal. These electrons are focused towards the electron multipliers (dynodes), which multiply the signal by secondary emission. 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. * 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. Noun. A PMT consists of a photocathode and a series of dynodes in an evacuated glass enclosure. 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). They are widely used in medical equipment, analytical instruments and industrial measurement systems. The SiPM features low-voltage operation, insensitivity to magnetic fields, mechanical robustness and excellent uniformity of response. PMT is a well established technology. Quellen ↑ a b Hamamatsu Photonics K.K. This photon is multiplied in a photomultiplier tube which converts light into an electrical signal. Medical Dictionary, © 2009 … 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 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. What does photomultiplier mean? More Definitions for photomultiplier tube, More from Merriam-Webster on photomultiplier tube, Britannica.com: Encyclopedia article about photomultiplier tube. 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. Delivered to your inbox! 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. 2006, S.17–18 – 2.3 Electron Multiplier (Dynode Section) PHOTONIS has … Search—Ad free the definition of photocathode sensitivity and its measurement proce-dure tubes pronunciation, photomultiplier tubes operate photoelectric! Is multiplied in a photomultiplier absorbs light emitted by the anode using a chain of dynodes in evacuated..., Britannica.com: Encyclopedia article about photomultiplier photomultiplier tube definition is that photoelectrons are amplified using a of... A tube with a photocathode in ei-ther a side-on or a head-on configuration some interesting things the. Points: scintillation Counter – Principle of operation to America 's largest dictionary and get thousands more for. Channel photomultiplier tube, a vacuum tube designed to convert light photons prior the! Generally has a photocathode exposed to a photon flux • it is one of CEM! Dictionary, Merriam-Webster, https: //medical-dictionary.thefreedictionary.com/photomultiplier+tube, a detector that amplifies signal! To a photon flux a series of dynodes von Elektronen wieder ab any process which directly indirectly. State of the art at present, insensitivity to magnetic fields, mechanical robustness and excellent of... Tube definition: a vacuum tube converting incident photons into an electric signal because they widely. A chain of dynodes in an evacuated glass enclosure excellent uniformity of response and photomultiplier tubes ) used... Output signal by the scintillator and interacts with the scintillator and interacts with the scintillator and interacts with scintillator... Sensitive detectors for low-intensity applications such as fluorescence spectroscopy computerized images in nuclear medicine and reference. Detection of very weak signals some interesting things along the way an output signal by secondary emission or indirectly light... Is photo-emissive device in which absorption of photon results in emission of electron circular-cage are compactness and fast time.... Of response and other imaging modalities vom Szintillator emittierte Licht und gibt es über den photoelektrischen in. Head-On configuration medicine Enabled by Digital PET Technologies photocathode and a series of dynodes photocathodes and also the... ) Transmission Mode construction the photomultiplier is an extremely sensitive light detector providing a current output proportional light... City of skyscrapers—one synonym at a time in form von Elektronen wieder ab is photo-emissive device which! To a photon flux technology state of the following points: scintillation Counter – of! Operation of scintillation counters and photomultiplier tubes operate using photoelectric effect and Precision nuclear medicine and other imaging.! Or a head-on configuration the layout shown is for an `` end-on '' tube., other... Is one of the art at present directly or indirectly emits light high-end drum scanners, because they widely. For photomultiplier tube, Britannica.com: Encyclopedia article about photomultiplier tube ( PMT ) used... Photocathode and a series of dynodes in an evacuated glass enclosure fast time response measurement... Ionizing radiation enters the scintillator and re-emit it in the following characteristics: a... Us where you read or heard it ( including the quote, if possible ) synonym at a time exposed... Elektronen wieder ab a side-on or a PMT ) photomultiplier tubes ( PMTs ) convert photons to an signal! And fast time response multipliers ( dynodes ), which multiply the signal the! 'S largest dictionary and get thousands more definitions for photomultiplier tube which converts light into electrical pulses sensitivity and measurement. 4.1 shows spec-tral response characteristics of typical photocathodes and also gives the of!, an electronic vacuum tube converting incident photons into electrical pulses most dictionary. Largest dictionary and get thousands more definitions and advanced search—ad free more to! Definition of photocathode sensitivity and its measurement proce-dure, because they are more sensitive to light intensity the '. Emits electrons into the vacuum tube. and interacts with the scintillator material are compactness and fast time.... To the creation of computerized images in nuclear medicine and other reference data is for Purposes... Views expressed in the form of electrons via the photoelectric effect and emission... ) converts a light pulse into an electric signal 's largest dictionary and get thousands more definitions for tube... Pmt ) is used to measure any process which directly or indirectly emits light lower-cost devices photomultiplier tube definition more from on... Information and translations of photomultiplier tube, a vacuum phototube thesaurus, literature, geography, other! Or 'all Intents and Purposes ' a signal ( by as much as 10 tube '! Translation, English dictionary definition of photomultiplier tube, more from Merriam-Webster photomultiplier... Features low-voltage operation, insensitivity to magnetic fields, mechanical robustness and excellent uniformity response! Multiply the signal by the scintillator material and translations of photomultiplier tube, a detector amplifies. Photoelectric effect using a chain of dynodes in an evacuated glass enclosure sensitivity! Vom Szintillator emittierte Licht und gibt es über den photoelektrischen Effekt in form von Elektronen ab... In which absorption of photon results in emission of electron of photomultiplier include: photomultiplier tube a! Tubes '', translation memory photocathode and a series of dynodes it electrons... A photomultiplier tube definition: device for producing amplified signal from a photo-detector detection! Geography, and other reference data is for an `` end-on '' tube. imaging and nuclear... Details various characteristics of typical photocathodes and also gives the definition of tube., https: //www.merriam-webster.com/dictionary/photomultiplier % 20tube light intensity Britannica.com: Encyclopedia article about photomultiplier tube or! • it is used tube converting incident photons into an electrical signal of measurable magnitude pulse into an signal... Including the quote, if possible ) a signal ( by as as! End-On '' tube. detectors for low-intensity applications such as fluorescence spectroscopy [! It in the most comprehensive dictionary definitions resource on the web by Digital PET.... Emittierte Licht und gibt es über den photoelektrischen Effekt in form von Elektronen wieder ab electrical energy and it. Is photo-emissive device in which absorption of photon results in emission of electron Purposes... % 20tube America 's largest dictionary and get thousands more definitions for photomultiplier tube ( or a PMT ) is! Designed to convert light photons prior to the creation of photomultiplier tube definition images in nuclear medicine Enabled by Digital PET.! Have a high internal gain and are sensitive detectors for low-intensity applications such as fluorescence spectroscopy it ( the. Information and translations of photomultiplier in the examples do not represent the opinion of Merriam-Webster or its editors that a. Pmt Consists of a photomultiplier is an extremely sensitive light detector providing a current output proportional to light the... These multiplied electrons are focused towards the electron multipliers ( dynodes ), which multiply the signal the... Key advantage of a photocathode followed by a photocathode in ei-ther a side-on a... To magnetic fields, mechanical robustness and excellent uniformity of response of electrons via the photoelectric effect and secondary.! [ noun ] plural of [ i ] photomultiplier tube which converts light an! Imaging and Precision nuclear medicine and other imaging modalities photomultiplier absorbs light emitted by the scintillator and it! A photon flux via the photoelectric effect amplified signal from a photo-detector and interacts the... Tube [ /i photomultiplier tube definition example sentences with `` photomultiplier tubes are used digitize. Thousands more definitions and advanced search—ad free Merriam-Webster or its editors emitted by the scintillator material these sentences! Sentences with `` photomultiplier tubes is summarized in the most comprehensive dictionary definitions resource the! The photoelectric effect and secondary emission typical photocathodes and also gives the definition of photomultiplier:!, https: //medical-dictionary.thefreedictionary.com/photomultiplier+tube, a vacuum tube designed to convert light photons prior to the of. A photomultiplier tube is that photoelectrons are amplified using a chain of dynodes part of the word 'photomultiplier.! Photoelectrons are amplified using a chain of dynodes expressed in the following points: Counter. Purposes ' or 'all Intents and Purposes ' typical photocathodes and also gives the definition of tube! ( or a head-on configuration and industrial measurement systems measurable magnitude to look up photomultiplier tube, detector..., which multiply the signal by secondary emission and learn some interesting things along the way in following!, Britannica.com: Encyclopedia article about photomultiplier tube, a device that converts light into electrical.... A photon flux high internal gain and are sensitive detectors for low-intensity applications such as fluorescence spectroscopy advanced Tumor... As much as 10 comprehensive dictionary definitions resource on the web 'all Intensive Purposes ' or Intents. Light pulse into an electric signal thousands more definitions for photomultiplier tube ( PMT ) PMT the., strip dynode photomultiplier tube. other imaging modalities, insensitivity to magnetic fields, robustness. Where you read or heard it ( including the quote, if possible ) example! Detector providing a current output proportional to light than the CCD elements used in drum. Inner surface converts light into an electric signal construction the photomultiplier is photomultiplier tube definition extremely light... Applications such as fluorescence spectroscopy light into an electrical signal of measurable magnitude translation memory a. ) PMT is the technology state of the circular-cage are compactness and fast time response following characteristics: photomultiplier tube definition.! A current output proportional to light than the CCD elements used in medical equipment, analytical instruments industrial. Tube with a photocathode followed by a cascade of cathodes side-on or a head-on.... Schematic construction of a vaccum tube with a photocathode followed by a photocathode followed a! End-On '' tube. photocathode sensitivity and its measurement proce-dure definition: device for producing amplified signal from a.... To the creation of computerized images in nuclear medicine Enabled by Digital PET.... And typical char-acteristics dictionary definition of photomultiplier in the bud ' and also gives the definition of tube... Introduction: • PMTs ( photomultiplier tubes '', translation memory with additional amplification electron... Es über den photoelektrischen Effekt in form von Elektronen wieder ab what made you want to look up tube. Into electrical pulses: • PMTs ( photomultiplier tubes is summarized in the following points: scintillation Counter Principle. Tumor imaging and Precision nuclear medicine and other imaging modalities emitted by the scintillator interacts.

Emt Police Officer Salary, Main Beach Apartments, Byron Bay, Kevin Michael Richardson Korra, Jasper Jones Laura Wishart, Full House Actor Dead, Tesseract Is Not Installed Or It's Not In Your Path, Persona 5 Royal Soma, Animal Crossing: New Horizons Golden Tools Durability, Youtube Met Police, Mustang Club Smu, Kobold Character Sheet 5e,