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首页> 外文期刊>Radiation Protection Dosimetry >BETA DOSE EVALUATION ALGORITHM FOR CaSO_4:Dy BYSED TLD BADGE USED IN COUNTRYWIDE PERSONNEL MONITORING PROGRAMME IN INDIA
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BETA DOSE EVALUATION ALGORITHM FOR CaSO_4:Dy BYSED TLD BADGE USED IN COUNTRYWIDE PERSONNEL MONITORING PROGRAMME IN INDIA

机译：印度乡村人员监控计划中使用的CaSO_4：Dy BYS TLD徽章的BETA剂量评估算法

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摘要

The prevalent algorithm for the estimation of beta dose, which in turn is used for estimation of skin dose for exposures involving beta radiations was observed to significantly overestimate the dose in individual monitoring based on CaSO_4:Dy TLD badge in India. A new algorithm has been developed by estimating the correction factor from the response of dosemeter to different beta sources at various angles of incidence. The correction factor was observed to vary linearly with the ratio of the responses of dosemeter element without filter (D_3) and dosemeter element under Perspex filter (D_2). The correction factor determined using the ratio of D_3 and D_2 was applied to the response (D_3) of dosemeter element without filter for estimation of beta dose. Protocol for identification of beta in the mixed gamma beta fields was defined such that it resulted in nearly same correction factor for given beta source in both gamma beta mixed fields and pure beta fields. The beta dose evaluation algorithm has provided the beta dose estimation within the required accuracy for >90% cases obtained from national quality assurance test data from different laboratories.
机译：在印度，基于CaSO_4：Dy TLD徽章的个人监测发现，普遍使用的估算β剂量的算法反过来用于估算涉及β辐射的皮肤剂量，该算法显着高估了剂量。通过估计剂量计对不同入射角下不同β源的响应的校正因子，开发了一种新算法。观察到校正因子随不带过滤器的剂量计元件（D_3）和有机玻璃过滤器（D_2）下的剂量计元件的响应比线性变化。将使用D_3和D_2之比确定的校正因子应用于不带滤波器的剂量计元件的响应（D_3），以估算β剂量。定义了用于在混合伽玛β场中识别β的协议，以使得在给定的β源中，在伽玛β混合场和纯β场中产生几乎相同的校正因子。从不同实验室的国家质量保证测试数据获得的结果中，> 90％的情况下，β剂量评估算法已提供了所需准确性内的β剂量估计。

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  • 来源
    《Radiation Protection Dosimetry》 |2017年第1期|96-103|共8页
  • 作者

    R. B. Rakesh; Munish Kumar; C. Sneha; P. Ratna; D. Datta;

  • 作者单位

    Radiological Physics and Advisory Division, Bhabha Atomic Research Centre (BARC), Mumbai 400 085, India;

    Radiological Physics and Advisory Division, Bhabha Atomic Research Centre (BARC), Mumbai 400 085, India;

    Radiological Physics and Advisory Division, Bhabha Atomic Research Centre (BARC), Mumbai 400 085, India;

    Radiological Physics and Advisory Division, Bhabha Atomic Research Centre (BARC), Mumbai 400 085, India;

    Radiological Physics and Advisory Division, Bhabha Atomic Research Centre (BARC), Mumbai 400 085, India;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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