Radioactive dust monitor
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United States of America Patent
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-
Mar 2, 2004
Grant Date -
Oct 2, 2003
app pub date -
Nov 2, 2001
filing date -
Apr 25, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A radioactive dust monitor comprising a dust collecting electrode serving also as a radiation detecting surface, an ionization line extending in air in a spaced relation with the dust collecting electrode and a radiation detection part. The radiation detection part is provided with a scintillator disposed close to said dust collecting electrode and a photoelectric conversion part converting light emitted from the scintillator into an electric signal. Dust in air is collected by the dust collecting electrode due to a corona discharge which is generated by applying a negative high voltage to the ionization line and by applying a positive high voltage to the dust collecting electrode, and light emitted from the scintillator due to radioactive rays radiated from the collected radioactive dust is detected by the photoelectric conversion part.
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