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Published byDomenic Sullivan Modified over 9 years ago
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Geiger-Mueller Counters Darwin L. Boyd Kent State University School of Technology
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Gas Filled Counters Ion chambers Proportional counters Geiger-Mueller counters
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Charged Particle Interactions Alpha particles (He nuclei) and fast electrons (beta particles) interact with matter via the Coulomb force and produce ionization - ion pairs. 30 eV per ion pair Ion pairs would like to recombine Can be collected by applying an electric field
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Gas Filled Counter Image from: http://www-istp.gsfc.nasa.gov/Education/wgeiger.html
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Gas Filled Counters Pulse Amplitude Applied Voltage Ion chambers Proportional Counters Geiger Counters
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Gamma Ray Interactions Gamma Rays (and X Rays) do not interact via the Coulomb force Must undergo a “catastrophic” event Result is a fast electron “Catastrophic” event usually occurs in the walls of gas filled detectors
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