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首页> 外文期刊>Radiation Protection Dosimetry >THE USE OF ENRICHED ~6LI AND ~7LI LIF:MG,CU,P GLASS-ROD THERMOLUMINESCENT DOSEMETERS FOR LINEAR ACCELERATOR OUT-OF-FIELD RADIATION DOSE MEASUREMENTS
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THE USE OF ENRICHED ~6LI AND ~7LI LIF:MG,CU,P GLASS-ROD THERMOLUMINESCENT DOSEMETERS FOR LINEAR ACCELERATOR OUT-OF-FIELD RADIATION DOSE MEASUREMENTS

机译：丰富的〜6LI和〜7LI LIF：MG，CU，P玻璃棒热发光剂量计用于线性加速器场外辐射剂量测量

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摘要

~6LiF:Mg,Cu,P and ~7LiF:Mg,Cu,P glass-rod thermoluminescent dosemeters (TLDs) were used for measurements of out-of-field photon and neutron doses produced by Varian iX linear accelerator. Both TLDs were calibrated using 18-MV X-ray beam to investigate their dose-response sensitivity and linearity. CR-39 etch-track detectors (Luxel + , Landauer) were employed to provide neutron dose data to calibrate ~6LiF:Mg,Cu,P TLDs at various distances from the isocentre. With cadmium filters employed, slow neutrons (<0.5 eV) were distinguished from fast neutrons. The average in-air photon dose equivalents per monitor unit (MU) ranged from 1.5±0.4 to 215.5±94.6 μSv at 100 and 15 cm from the isocentre, respectively. Based on the cross-calibration factors obtained with CR-39 etch-track detectors, the average in-air fast neutron dose equivalents per MU range from 10.6 + 3.8 to 59.1 +49.9 p.Sv at 100 and 15 cm from the isocentre, respectively. Contribution of thermal neutrons to total neutron dose equivalent was small: 3.1 ± 7.2 μSv per MU at 15 cm from the isocentre.
机译：〜6LiF：Mg，Cu，P和〜7LiF：Mg，Cu，P玻璃棒热发光剂量计（TLD）用于测量Varian iX线性加速器产生的场外光子和中子剂量。两种TLD均使用18-MV X射线束校准，以研究其剂量反应敏感性和线性。使用CR-39蚀刻跟踪检测器（Luxel +，Landauer）提供中子剂量数据，以在距等中心不同距离处校准〜6LiF：Mg，Cu，P TLD。使用镉过滤器时，慢中子（<0.5 eV）与快中子是有区别的。每个监测器（MU）的平均空气中光子剂量当量在距等中心点100和15 cm处的范围分别为1.5±0.4至215.5±94.6μSv。根据使用CR-39蚀刻轨迹检测器获得的交叉校准因子，每MU的等速空气中子平均当量剂量在等距100 cm和15 cm处分别为10.6 + 3.8至59.1 +49.9p.Sv。 。热中子对总中子剂量当量的贡献很小：在距等心点15 cm处，每MU 3.1±7.2μSv。

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  • 来源
    《Radiation Protection Dosimetry》 |2012年第1期|p.22-33|共12页
  • 作者

    R. Takam; E. Bezak; G. Liu; L. Marcu;

  • 作者单位

    School of Chemistry and Physics, Adelaide University, Adelaide, Australia,Medical Physics Department, Royal Adelaide Hospital, Adelaide, Australia;

    School of Chemistry and Physics, Adelaide University, Adelaide, Australia,Medical Physics Department, Royal Adelaide Hospital, Adelaide, Australia;

    Medical Physics Department, Royal Adelaide Hospital, Adelaide, Australia;

    School of Chemistry and Physics, Adelaide University, Adelaide, Australia,Medical Physics Department, Royal Adelaide Hospital, Adelaide, Australia,Faculty of Science, University of Oradea, Romania;

  • 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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