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首页> 外文期刊>Radiation Protection Dosimetry >THE MCNP-4C2 DESIGN OF A TWO ELEMENT PHOTON/ELECTRON DOSEMETER THAT USES MAGNESIUM/COPPER/PHOSPHORUS DOPED LITHIUM FLUORIDE
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THE MCNP-4C2 DESIGN OF A TWO ELEMENT PHOTON/ELECTRON DOSEMETER THAT USES MAGNESIUM/COPPER/PHOSPHORUS DOPED LITHIUM FLUORIDE

机译：镁/铜/磷掺杂氟化锂的两种元素光子/电子剂量仪的MCNP-4C2设计

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The Health Protection Agency is changing from using detectors made from ~7LiF:Mg,Ti in its photon/electron personal dose-meters, to ~7LiF:Mg,Cu,P. Specifically, the Harshaw TLD-700H card is to be adopted. As a consequence of this change, the dosemeter holder is also being modified not only to accommodate the shape of the new card, but also to optimize the photon and electron response characteristics of the device. This redesign process was achieved using MCNP-4C2 and the kerma approximation, electron range/energy tables with additional electron transport calculations, and experimental validation, with different potential filters compared; the optimum filter studied was a polytetrafluoroethylene disc of diameter 18 mm and thickness 4.3 mm. Calculated relative response characteristics at different angles of incidence and energies between 16 and 6174 keV are presented for this new dosemeter configuration and compared with measured type-test results. A new estimate for the energy-dependent relative light conversion efficiency appropriate to the ~7LiF:Mg,Cu,P was also derived for determining the correct dosemeter response.
机译：卫生保护局正在从在其光子/电子个人剂量仪中使用由〜7LiF：Mg，Ti制成的检测器，转变为〜7LiF：Mg，Cu，P。具体而言，将采用Harshaw TLD-700H卡。由于这种变化，剂量计支架也被修改，不仅适应了新卡的形状，而且还优化了设备的光子和电子响应特性。通过使用MCNP-4C2和比释动能逼近，电子范围/能量表以及其他电子传输计算和实验验证，并比较了不同的电位滤波器，完成了重新设计过程。研究的最佳过滤器是直径为18 mm，厚度为4.3 mm的聚四氟乙烯盘。给出了这种新型剂量计配置的在16到6174 keV之间的不同入射角和能量下的计算的相对响应特性，并将其与测得的型式测试结果进行了比较。还得出了适合于〜7LiF：Mg，Cu，P的与能量有关的相对光转换效率的新估计值，用于确定正确的剂量计响应。

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