The operation of a gas-filled detector is based on the ionization of gas molecules by radiation, followed by collection of the ion pairs as charge or current with the application of avoltage between two electrodes. The measured charge or current is proportional to the applied voltage and the amount of radiation, and depends on the type and pressure of the gas.
KeywordsIonization Chamber Dose Calibrator Nuclear Regulatory Commission Isotope Selector Repetitive Discharge
Unable to display preview. Download preview PDF.
- Hendee WR. Medical Radiation Physics. 2nd ed. Chicago: Year Book Medical Publishers, Inc; 1979.Google Scholar
- Robinson CV. Geiger—Müller and proportional counters. In: Hine GJ, ed. Instrumentation in Nuclear Medicine. New York: Academic Press, 1967; 57–72.Google Scholar
- Rollo FD, ed. Nuclear Medicine Physics, Instrumentation and Agents. St Louis: Mosby; 1977.Google Scholar
- Sorensen JA, Phelps ME. Physics in Nuclear Medicine. 2nd ed. New York: Grune & Stratton; 1987.Google Scholar