TY - JOUR
AU - Rahman, A T Abdul
AB - This study assesses the gamma radiation levels and associated dose rates from the naturally occurring radionuclides 232Th, 238U and 40K in soil samples collected from the district of Rembau, Malaysia using High-purity Germanium (HPGe) Detectors. A 105 measurement were performed on surface soil using NaI (Tl) gamma-ray detector with crystal size 1"x1", covering about 83% land of the Rembau district. The concentration of the naturally occurring radionuclides 232Th, 238U and 40K in soil samples collected were determined by using HPGe detector based on high-resolution gamma spectrometry system at Malaysia Nuclear Agency. The range of natural gamma radiation measured was from 114±14 nGy h1 to 857±14 nGy h1. The range of activity concentrations of U, Th and °K in soil from the studied areas varies from 151-401 Bq kg1, 113-342 Bq kg1 and 674-1526 Bq kg1 with mean values of 245 Bq kg1, 186 Bq kg1 and 1152 Bq kg1 respectively. The mean values of terrestrial gamma radiation dose rate measured in Rembau district is 383±18 nGy h1 compared to the Malaysian average is 92 nGy h1 and world average is 59 nGy h1 (UNSCEAR, 2000). The average annual dose from such terrestrial gamma radiation dose rates to an individual in Rembau district, assuming a tropical rural setting is estimated to be 0.78 mSv per year, which is considered to be within the normal range for doses from natural sources. An isodose map for the Rembau district has been plotted.
TI - Measurement of terrestrial gamma radiation dose-rate (TGRD) level in soil samples from the district of Rembau, Malaysia, using high-purity Germanium detectors
JF - Journal of Physics: Conference Series
DO - 10.1088/1742-6596/546/1/012016
DA - 2014-11-07
UR - https://www.deepdyve.com/lp/iop-publishing/measurement-of-terrestrial-gamma-radiation-dose-rate-tgrd-level-in-8GoECRoLSB
SP - 012016
VL - 546
IS - 1
DP - DeepDyve
ER -