caa a22 4500 397502311 CHVBK 20180308164535.0 cr unu---uuuuu 161202e19950801xx s 000 0 eng 10.1093/oxfordjournals.rpd.a082769 doi 0144-8420 pii (NATIONALLICENCE)oxford-10.1093/oxfordjournals.rpd.a082769 Rapid Monitoring of Gaseous Radionuclides Using a Portable Spectrometer [Elektronische Daten] [C. Chung, C.H. Tsai] A field gamma ray spectrometer, consisting of a portable high purity germanium detector, portable multichannel analyser, and a notebook computer, was used to conduct in situ rapid scanning of radioactive Ar, Kr, and Xe isotopes in the air around a nuclear facility. The portable gamma ray spectrometer was calibrated using Ar, Kr, and Xe radioisotopes, activated in a research reactor and released in a sealed chamber. The unit was further tested inside the reactor containment to monitor the concentration of 41Ar. In a typical one hour field measurement, the detection limits for some rare gas radionuclides corresponded to dose rates around 0.1 nSv.h-1, which is far less than the dose rate induced by derived air concentrations imposed by the authority. The dose rate due to ground level concentrations of gaseous radionuclides dispersed from a source, such as a nuclear facility or a nuclear test, can be monitored in a short period using the portable unit. Radiation Protection Dosimetry Chung C. aut Tsai C.H. aut Radiation Protection Dosimetry Oxford University Press 61/1-3(1995-08-01), 137-140 0144-8420 61:1-3<137 1995 61 rpd https://doi.org/10.1093/oxfordjournals.rpd.a082769 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/oxfordjournals.rpd.a082769 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Chung C. aut NATIONALLICENCE 700 1- Tsai C.H. aut NATIONALLICENCE 773 0- Radiation Protection Dosimetry Oxford University Press 61/1-3(1995-08-01), 137-140 0144-8420 61:1-3<137 1995 61 rpd Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford