Method and apparatus for detecting ionizing radiation
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United States of America Patent
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May 6, 2008
Grant Date -
Apr 20, 2006
app pub date -
Feb 23, 2005
filing date -
Feb 25, 2004
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Abstract
A method for detecting ionizing radiation with the aid of a scintillation counter and a photomultiplier using an inorganic solid-matter scintillator that incorporates at least one decay time component greater than 100 ns and measures the photons emitted by the scintillator with a fast single-photon counter. The single-photon counter is composed of a fast photomultiplier with high internal amplification, a stabilized high-voltage supply and a fast amplifier/discriminator with standard pulse output. With this arrangement, the measurement of all types of radiation, like alpha, beta, gamma and X radiation, can be performed, with low manufacturing costs for the detector, a high degree of sensitivity especially with regard to low beta energies, only small sensitivity changes over a large temperature range of -20 to +50 degrees C., and good long-term stability.
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