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HIGH DOSE FAST NEUTRON DOSIMETRY USING PADC PLASTIC NUCLEAR TRACK DETECTORS AND GREY LEVEL ANALYSIS

机译:使用PADC塑料核径迹探测器和灰色水平分析的高剂量快速中子剂量学

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摘要

The objective of this work is to demonstrate the possibility of performing fast neutron dosimetry up to 5 Sv using optical absorbance of polyallyl diglycol carbonate (PADC) detectors, obtained through grey level analysis of PADC images acquired with a commercial track-counting dosimetry system, and estimate the uncertainties involved. PADCs were irradiated with doses from 100 mSv to 5 Sv (Cf-252 source) and etched. PADC images were acquired using the TASLIMAGE (TM) Neutron Dosimetry System (Track Analysis Systems Ltd.) and analysed to obtain the grey levels and the optical absorbance. The absorbance from different detectors and batches was analysed to determine the uncertainties involved, from which the final uncertainty in the method, similar to 30% and dominated by the uncertainty in the calibration curve, was estimated. A dose estimation 2 Sv can also be performed using a 'universal curve' by normalising the absorbance to that of a detector irradiated with 1 Sv. The data presented here allows the extension of the dose range of track counting systems using no additional equipment, only the images already acquired by the systems.
机译:这项工作的目的是证明使用聚烯丙基碳酸二乙二醇酯(PADC)检测器的吸光度进行高达5 Sv的快速中子剂量测定的可能性,该检测器是通过对使用商业计数计数剂量测定系统获得的PADC图像进行灰度分析而获得的,以及估计涉及的不确定性。用100 mSv至5 Sv(Cf-252光源)的剂量照射PADC并进行蚀刻。使用TASLIMAGE TM中子剂量测定系统(Track Analysis Systems Ltd.)获取PADC图像,并进行分析以获得灰度级和光吸收率。分析了来自不同检测器和批次的吸光度,以确定所涉及的不确定性,据此可以估算出该方法的最终不确定性(与30%相似,并以校准曲线中的不确定性为主)。通过将吸光度归一化为用1 Sv照射的检测器的吸光度,还可以使用“通用曲线”执行<2 Sv剂量估算。此处提供的数据无需使用其他设备,而仅使用系统已经采集的图像即可扩展跟踪计数系统的剂量范围。

著录项

  • 来源
    《Radiation Protection Dosimetry》 |2018年第4期|220-224|共5页
  • 作者单位

    Paul Scherrer Inst, Dept Radiat Safety & Secur, CH-5232 Villigen, Switzerland;

    Paul Scherrer Inst, Dept Radiat Safety & Secur, CH-5232 Villigen, Switzerland;

    Paul Scherrer Inst, Dept Radiat Safety & Secur, CH-5232 Villigen, Switzerland;

  • 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
  • 中图分类
  • 关键词

  • 入库时间 2022-08-18 03:53:02

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