Radiation detector and radiation detection method
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United States of America Patent
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Dec 20, 2016
Grant Date -
Nov 12, 2015
app pub date -
Sep 2, 2014
filing date -
Sep 30, 2013
priority date (Note) -
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Abstract
An embodiment of a radiation detector has: a light collecting member; a photo detector that can receive light collected by the light collecting member and count number of photons; a wavelength selector that can selectively transmit light based on the light emission of gas caused by alpha rays by selectively transmitting light of a wavelength in a specific range; a shielding device that is can switch between an opened state in which it transmits light and a closed state in which it shields light; and a counting unit that calculates an alpha dose based on a difference calculated by subtracting number of noise photons detected in the photo detector within a predetermined time period when the shielding device is in the closed state from the number of photons received by the photo detector within the predetermined time period when the shielding device is opened state.
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