Ramola Rakesh Chand
Department of Physics, HNB Garhwal University, Badshahi Thaul Campus, Tehri Garhwal 249199, India.
Radiat Prot Dosimetry. 2011 Jul;146(1-3):11-3. doi: 10.1093/rpd/ncr095. Epub 2011 Apr 11.
Measurements of radon, thoron and their progeny were carried out in some houses from Garhwal and Kumaun Himalayas of India using a LR-115 plastic track detector. The measurements were made in various residential houses of the area at a height of 2.5 m above the ground level using a twin chamber radon dosemeter, which can record the values of radon, thoron and their progeny separately. The concentrations of radon and thoron in these homes were found to vary from 11 to 191 and 1 to 156 Bq m(-3), respectively. The equilibrium factor between radon and progeny varies from 0.02 to 0.90, with an average of 0.26 for the region. The resulting dose rate due to radon, thoron and their decay products was found to vary from 0.02 to 0.84 μSv h(-1) with an arithmetic mean of 0.27 μSv h(-1). A detailed analysis of the distribution of radon, thoron and their decay products inside a house is also reported. The observed dose rates due to radon, thoron and progeny were found somewhat higher but well below the international recommendations.
使用LR - 115塑料径迹探测器对印度加瓦尔和库马盎喜马拉雅地区一些房屋中的氡、钍射气及其子体进行了测量。测量是在该地区不同住宅房屋中距地面2.5米高处使用双室氡剂量仪进行的，该剂量仪可分别记录氡、钍射气及其子体的值。这些房屋中氡和钍射气的浓度分别为11至191 Bq m(-3)和1至156 Bq m(-3)。氡与其子体之间的平衡因子在0.02至0.90之间变化，该地区的平均值为0.26。由于氡、钍射气及其衰变产物产生的剂量率在0.02至0.84 μSv h(-1)之间变化，算术平均值为0.27 μSv h(-1)。还报告了房屋内氡、钍射气及其衰变产物分布的详细分析情况。观察到的由氡、钍射气及其子体产生的剂量率略高，但远低于国际建议值。
