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首页> 外文期刊>Radiation Protection Dosimetry >A FOLLOW-UP STUDY ON INDOOR ~(222)Rn, ~(220)Rn AND THEIR DECAY PRODUCT CONCENTRATIONS IN A MINERALISED ZONE OF HIMACHAL PRADESH, INDIA
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A FOLLOW-UP STUDY ON INDOOR ~(222)Rn, ~(220)Rn AND THEIR DECAY PRODUCT CONCENTRATIONS IN A MINERALISED ZONE OF HIMACHAL PRADESH, INDIA

机译：印度HIMACHAL PRADESH矿化带室内〜（222）Rn，〜（220）Rn及其衰变产物浓度的追踪研究

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摘要

A follow-up study was taken up in a mineralised zone situated in Hamirpur district, Himachal Pradesh, India, to investigate high values of radon concentrations reported in past studies as well to update the old radon data based on bare SSNTD technique. In the present investigation, the concentrations of indoor radon, thoron and their decay products have been measured using the newly developed radon/thoron discriminating diffusion chamber with single entry face, direct radon and thoron progeny sensors (DRPS/DTPS), respectively. The measurements have been carried out in 75 dwellings of 14 different villages where the previous studies were carried out using bare SSNTD technique. It was observed that high values of earlier reported radon concentrations were mainly due to thoron interference in the Solid State Nuclear Track Detector (LR-115 type Ⅱ) exposed in bare mode. Now, the average concentration values and the estimated annual inhalation dose in these villages have been found to be within the reference level as recommended by the ICRP. The annual average indoor radon and thoron concentrations observed in these dwellings have been found to vary from 44 ±12 to 157 ± 73 Bq m~(-3) and 44±11 to 240 ± 125 Bq m~(-3), respectively. The equilibrium equivalent concentrations of radon and thoron decay products have been observed to be in the range of 10 to 63 and 1 to 5 Bq m~(-3), respectively.
机译：在印度喜马al尔邦哈米尔布尔地区的一个矿化带进行了一项后续研究，以调查过去研究中报道的高concentrations浓度值，并基于裸露的SSNTD技术更新旧ra数据。在本研究中，室内using 、,及其衰变产物的浓度已使用新开发的具有单入口面的direct / tho区分扩散室，直接ra和子代传感器（DRPS / DTPS）进行了测量。测量是在14个不同村庄的75处住宅中进行的，以前的研究是使用裸露SSNTD技术进行的。据观察，较早报道的ra浓度高主要是由于在裸露模式下暴露于固态核径迹探测器（Ⅱ型LR-115）中的ron干扰。现在，已发现这些村庄的平均浓度值和估计的年度吸入剂量在ICRP建议的参考水平之内。在这些住宅中观察到的年平均室内ra和tho的浓度分别为44±12至157±73 Bq m〜（-3）和44±11至240±125 Bq m〜（-3）。 observed和的衰变产物的平衡当量浓度分别在10至63 Bq m〜（-3）范围内。

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  • 来源
    《Radiation Protection Dosimetry》 |2016年第4期|553-560|共8页
  • 作者

    B. S. Bajwa; Parminder Singh; Prabhjot Singh; Komal Saini; Surinder Singh; B. K. Sahoo; B. K. Sapra;

  • 作者单位

    Department of Physics, Guru Nanak Dev University, Amritsar, Punjab 143005, India;

    Department of Physics, Guru Nanak Dev University, Amritsar, Punjab 143005, India;

    Department of Physics, Guru Nanak Dev University, Amritsar, Punjab 143005, India;

    Department of Physics, Guru Nanak Dev University, Amritsar, Punjab 143005, India;

    Department of Physics, Guru Nanak Dev University, Amritsar, Punjab 143005, India;

    Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai 400085, India;

    Radiological Physics and Advisory Division, Bhabha Atomic Research Centre, Mumbai 400085, India;

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