ABSTRACT

Thermoluminescence dosimetry (TLD) is useful for radiation detection for a wide range of applications with reasonable accuracy since its introduction to the clinical environment in 1954. However, the determination of uncertainty is crucial to obtain accurate measurements. This study intended to evaluate different types of expected classified errors for strontium tetraborate (SrB₄O₇) doped with Samarium (Sm⁺³) to obtain accurate electron dose using luminescence characteristics. Higher temperature solid-state reaction was used to prepare the phosphor. TL glow curves examined after irradiation with a 50 Gy single electron dose. The different causes of uncertainty for the dosimetric material under investigation were assessed. The obtained values of uncertainty were multiplied by the coverage factor two in order to get the expanded doubt at a 95% certainty level. The extended uncertainty from the different examined sources does not surpass 0.8546 nC. When SrB₄O₇: Sm⁺³ used as a TLD detector for electron beam dosimetry, the expanded uncertainty recommended to be added to the measured dose to attain the precise dose.

摘要

自1954年问世以来，热发光剂量法（TLD）便以合理的精度用于各种应用的辐射检测中。但是，不确定性的确定对于获得准确的测量至关重要。这项研究旨在评估掺types （Sm ⁺³）的四硼酸锶（SrB ₄ O ₇）的不同类型的预期分类误差。），以利用发光特性获得准确的电子剂量。使用更高温度的固态反应来制备磷光体。用50 Gy单电子剂量辐照后检查TL发光曲线。评估了被测剂量材料不确定性的不同原因。将获得的不确定性值乘以覆盖因子2，以便在95％的确定性水平上获得扩展的不确定性。来自不同检查源的扩展不确定度不超过0.8546 nC。当SrB ₄ O ₇：Sm ⁺³用作电子束剂量法的TLD检测器时，建议将扩展不确定度添加到测量剂量中以获得精确剂量。