photomultiplier tubes

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• Photomultiplier — tubes (photomultipliers or PMTs for short), members of the class of vacuum tubes, and more specifically phototubes, are extremely sensitive detectors of light in the ultraviolet, visible, and near infrared ranges of the electromagnetic spectrum.… …   Wikipedia

• Photomultiplier — Schematische Skizze eines Photomultipliers Photomultiplier, Länge …   Deutsch Wikipedia

• photomultiplier tube — ▪ electronics       electron multiplier tube that utilizes the multiplication of electrons by secondary emission to measure low light intensities. It is useful in television camera tubes, in astronomy to measure intensity of faint stars, and in… …   Universalium

• Silicon photomultiplier — Silicon photomultipliers, often called SiPM in the literature, are semiconductor single photon sensitive devices built from an avalanche photodiode (APD) array on common Silicon substrate. The idea behind this device is the detection in… …   Wikipedia

• radiation measurement — ▪ technology Introduction       technique for detecting the intensity and characteristics of ionizing radiation, such as alpha, beta, and gamma rays or neutrons, for the purpose of measurement.       The term ionizing radiation refers to those… …   Universalium

• Vacuum tube — This article is about the electronic device. For experiments in an evacuated pipe, see free fall. For the transport system, see pneumatic tube. Modern vacuum tubes, mostly miniature style In electronics, a vacuum tube, electron tube (in North… …   Wikipedia

• Neutrino detector — The Sudbury Neutrino Observatory, a 12 meter sphere filled with heavy water surrounded by light detectors located 2000 meters below the ground in Sudbury, Ontario, Canada. A neutrino detector is a physics apparatus designed to study neutrinos.… …   Wikipedia

• telescope — /tel euh skohp /, n., adj., v., telescoped, telescoping. n. 1. an optical instrument for making distant objects appear larger and therefore nearer. One of the two principal forms (refracting telescope) consists essentially of an objective lens… …   Universalium

• Neutrino telescope — In astronomy, a neutrino telescope is usually a detector consisting of a large mass of water or ice, surrounded by an array of sensitive light detectors known as photomultiplier tubes. This allows the observation of astronomical objects by… …   Wikipedia

• Photocathode — In a photomultiplier or Phototube, a photocathode is a negatively charged electrode coated with a photosensitive compound. When this is struck by light, electrons are emitted due to the photoelectric effect.Although a plain metallic cathode will… …   Wikipedia

• Neutrino — For other uses, see Neutrino (disambiguation). Neutrino/Antineutrino The first use of a hydrogen bubble chamber to detect neutrinos, on November 13, 1970. A neutrino hit a proton in a hydrogen atom. The collision occurred at the point where three …   Wikipedia