Plot of variation of ion pair current against applied voltage for a wire cylinder gaseous radiation detector.
Gaseous ionization detectors are radiation detection instruments used in particle physics to detect the presence of ionizing particles, and in radiation protection applications to measure ionizing radiation.
They use the ionising effect of radiation upon a gas-filled sensor. If a particle has enough energy to ionize a gas atom or molecule, the resulting electrons and ions cause a current flow which can be measured.
Gaseous ionisation detectors form an important group of instruments used for radiation detection and measurement. This article gives a quick overview of the principal types, and more detailed information can be found in the articles on each instrument. The accompanying plot shows the variation of ion pair generation with varying applied voltage for constant incident radiation. There are three main practical operating regions, one of which each type utilises.
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Gaseousionizationdetectors are radiation detection instruments used in particle physics to detect the presence of ionizing particles, and in radiation...
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is a type of gaseousionizationdetector used in nuclear and particle physics and radiation detection. All gaseousionizationdetectors are able to collect...
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solar panels, electron microscopes, radiation therapy, lasers, gaseousionizationdetectors, and particle accelerators. Interactions involving electrons...
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towards a detector to facilitate detection. Neutrons also do not ionize atoms except by direct collision, so gaseousionizationdetectors are ineffective...
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technique is a branch of gaseous ion-molecule chemistry. Reagent gas molecules (often methane or ammonia) are ionized by electron ionization to form reagent ions...
respond better to the visible blue-green region. In nuclear physics, gaseousdetectors have been used to detect fission fragments or heavy charged particles...
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