Extended Survey of Indoor and Outdoor Terrestrial Gamma Radiation in Greek Urban Areas by In situ Gamma Spectrometry with Portable Ge Detector

Abstract

The results obtained from more than 1000 indoor and outdoor in situ gamma spectrometry measurements in 41 towns (from all geographic subdivisions) of the Greek mainland (not islands) are presented. From the in situ gamma spectra the absorbed dose rate in air due to uranium series, thorium series, 40K and 137Cs are derived and discussed.

Simultaneous measurements of indoor radon, radon–thoron progeny and high-resolution gamma spectrometry in Greek dwellings

“…The results deduced previously (4,9) from 285 (225 þ 60) indoor gamma spectrometry measurements, performed in Thessaloniki, are presented in the same table. The impressively good agreement between the results of the three datasets, may indicate that for the town of Thessaloniki ($1 million inhabitants), about 30 dwellings are enough, in Figure 7.…”

“…The in situ measurements were performed with a downward, tripod-mounted facing detector at 1 m above ground. The duration of each measurement was 1000 s. The methodology used for the derivation of the indoor gamma dose rates, from the in situ indoor gamma ray spectra, has been explicitly described in previous publications (8,9) .…”

Real-Time Environmental Gamma Radiation Dose Rate Measurement around Major Nuclear and Radiological Facilities in Bangladesh

“…Great variations have been observed in environmental radiation levels and several international studies have been characterized gamma dose rates both in outdoor and indoor environments [6][7][8][9][10][11][12][13][14] . Both laboratory and in-situ gamma spectroscopy are often used for monitoring and assessment of radioactivity and radiation dose rates in the environment due to both natural and anthropogenic sources [15][16][17][18][19][20] . In-situ techniques for measuring the activity concentration resulting from the gamma radiation and characterizing its sources with gamma ray spectrometer have been used successfully in outdoor and indoor environment [12,[21][22][23] .…”

Calibration and testing of a portable NaI(Tl) gamma-ray spectrometer-dosimeter for evaluation of terrestrial radionuclides and 137Cs contributions to ambient dose equivalent rate outdoors

“…Specifically, for assessing the sum of DOI: 10.21514/1998-426Х-2017-10-1-18-29 УДК:539. 16 K activity concentrations in soil using stationary or/and portable gamma-ray spectrometers. It can be done with: 1) soil sampling and subsequent laboratory analysis or/and 2) direct measurements in field (in situ measurements), e.g., [2,5,9,10,11].…”