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Use of Commercially Available Optically Stimulated Luminescence Dosimeter as Extremity Dose Estimator.
Health Physics ( IF 2.2 ) Pub Date : 2020-5-10 , DOI: 10.1097/hp.0000000000001260
David L Georgeson 1 , Byron H Christiansen
Affiliation  

In 2009, Idaho National Laboratory (INL) transitioned to an external dosimetry program using optically stimulated luminescent (OSL) technology. This process led to the introduction of the Landauer, Inc., nanoDot dosimeter and MicroStar reader to INL's radiological control program. At the time, a small, self-contained, single chip OSL dosimeter that could be easily read in the field was recognized as having many potential applications for a radiological control program. The ability to achieve a realistic extremity-dose estimate in the field shortly following work where significant exposure is expected is a much sought-after capability at INL. It was proposed to employ the Landauer nanoDot dosimeter as a supplemental extremity monitor as an alternative to time-motion dose analyses based on direct radiation measurements, which had proven to be inaccurate and operationally inefficient. Additionally, this process does not involve the nanoDot in the US Department of Energy Laboratory Accreditation Program (DOELAP) process, which significantly reduces operational complexity. A dose conversion value for the nanoDot dosimeter was derived from direct comparisons with a DOELAP-accredited extremity dosimeter. The geometry or placement of the nanoDot relative to the accredited extremity dosimeter was kept as proximate as possible to best replicate the expected results from the accredited extremity dosimeter. Upon implementation, the nanoDot has proven to be effective in providing reasonable and timely extremity-dose estimates for operational control.

中文翻译:

使用市售光激发光剂量计作为肢体剂量估算器。

2009 年,爱达荷国家实验室 (INL) 转向使用光激发光 (OSL) 技术的外部剂量测定计划。这一过程导致将 Landauer, Inc.、nanoDot 剂量计和 MicroStar 阅读器引入 INL 的放射控制计划。当时,一种小型、独立、可在现场轻松读取的单芯片 OSL 剂量计被认为对放射控制程序具有许多潜在应用。在预计会有大量暴露的工作结束后不久,能够在现场实现实际的肢体剂量估计是 INL 非常抢手的能力。有人建议采用兰道尔纳米点剂量计作为补充肢体监测器,作为基于直接辐射测量的时间运动剂量分析的替代方案,事实证明这种方法不准确且操作效率低下。此外,该流程不涉及美国能源部实验室认可计划(DOELAP)流程中的nanoDot,从而显着降低了操作复杂性。nanoDot 剂量计的剂量转换值是通过与 DOELAP 认可的肢体剂量计的直接比较得出的。纳米点相对于经认可的肢体剂量计的几何形状或位置尽可能保持接近,以最好地复制经认可的肢体剂量计的预期结果。实施后,nanoDot 已被证明可以有效地为操作控制提供合理且及时的肢体剂量估计。
更新日期:2020-12-17
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