Selvasekarapandian S, Sivakumar R, Manikandan N M, Meenakshisundaram V, Raghunath V M, Gajendran V
Department of Physics, Bharathiar University, Coimbatore, Tamil Nadu, India.
Appl Radiat Isot. 2000 Feb;52(2):299-306. doi: 10.1016/s0969-8043(99)00158-x.
The concentration of primordial radionuclides in soil samples of Gudalore Taluk in the Udagamandalam district has been measured from the gamma ray spectrum of the soil. The mean activities of 232Th, 238U and 40K are 75.3 +/- 44.1, 37.7 +/- 10.1 and 195.2 +/- 85.1 Bq kg-1 dry weight, respectively. The average outdoor absorbed dose rate in air at a height of 1 m above ground is 74.3 +/- 27.8 nGy h-1, corresponding to an annual effective dose equivalent of 455.6 microSv. The dose equivalent ranges from 168.3 to 1250.5 microSv. The results have been compared with other global radioactivity measurements and evaluations.
已通过土壤的伽马射线能谱测量了乌塔卡蒙德地区古达洛尔镇土壤样品中原始放射性核素的浓度。钍-232、铀-238和钾-40的平均活度分别为75.3±44.1、37.7±10.1和195.2±85.1贝克勒尔/千克干重。地面上方1米高度处空气中的平均室外吸收剂量率为74.3±27.8纳戈瑞/小时，对应年有效剂量当量为455.6微希沃特。剂量当量范围为168.3至1250.5微希沃特。已将结果与其他全球放射性测量和评估进行了比较。
