Electron-multiplier



noun, Electronics.
1.
a vacuum tube containing a number of dynodes that serve to amplify the flow of electrons from the cathode by means of secondary emission.
noun
1.
(physics) a device for amplifying and measuring a flux of electrons. Each electron hits an anode surface and releases secondary electrons that are accelerated to a second surface; after several such stages a measurable pulse of current is obtained
electron multiplier
An electrical component in which a single electron can create a large current flow. Electron multipliers are used in photomultipliers, particle detectors, and electron microscopes. ◇ In tube electron multipliers, electrons released from a cathode collide with a dynode or anode, causing release of more electrons through secondary emission; this process is generally repeated through a number of stages to achieve great amplification of current. Electron multipliers are also called electron amplifiers.

Tagged:

Read Also:

  • Electron-neutrino

    [ih-lek-tron-noo-tree-noh, -nyoo-] /ɪˈlɛk trɒn nuˌtri noʊ, -nyu-/ noun, plural electron-neutrinos. Physics. 1. a type of neutrino that obeys a conservation law together with the electron, with the total number of electrons and electron-neutrinos minus the total number of their antiparticles remaining constant.

  • Electron-optics

    noun, (used with a singular verb) 1. the study and use of the physical and optical properties of beams of electrons under the influence of electric or magnetic fields. noun 1. (functioning as sing) the study and use of beams of electrons and of their deflection and focusing by electric and magnetic fields



  • Electron-pair

    noun 1. Chemistry. two electrons occupying the same orbital in an atom or molecule; two electrons working together, especially forming a nonpolar covalent bond between atoms. 2. Physics. an electron and a positron produced in a reaction, as by a high-energy photon. electron pair

  • Electron probe microanalysis

    noun 1. a technique for the analysis of a very small amount of material by bombarding it with a narrow beam of electrons and examining the resulting X-ray emission spectrum



Disclaimer: Electron-multiplier definition / meaning 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. All content on this website is for informational purposes only.