Traceable dosimetry for MeV ion beams.
Traceable dosimetry for MeV ion beams.
复制标题
MeV 离子束的可追踪剂量测定。
DOI：
10.1088/1748-0221/17/02/t02002
复制
发表时间：
2022
期刊：
影响因子：
--
通讯作者：
Brenner,DJ
中科院分区：
文献类型：
--
作者：
Garty,G;Harken,AD;Brenner,DJ
对于临床和研究中使用的高穿透性光子和粒子束，存在标准剂量测定协议。然而，这些协议不能直接应用于浅穿透 MeV 范围的离子束。放射学研究加速器设施近 50 年来一直使用此类光束照射单层细胞，采用基于组织等效电离室的自行开发的剂量测定法。为了更好地符合国际公认的标准，我们描述了商业、NIST 可追踪、充气电离室的实施，用于测量低能离子对水的吸收剂量，使用根据 TRS-398 建议计算的辐射质量校正因子。报告的剂量不取决于 10-150 keV/μm 范围内的电离密度。
Standard dosimetry protocols exist for highly penetrating photon and particle beams used in the clinic and in research. However, these protocols cannot be directly applied to shallow penetration MeV-range ion beams. The Radiological Research Accelerator Facility has been using such beams for almost 50áyears to irradiate cell monolayers, using self-developed dosimetry, based on tissue equivalent ionization chambers. To better align with the internationally accepted standards, we describe implementation of a commercial, NIST-traceable, air-filled ionization chamber for measurement of absorbed dose to water from low energy ions, using radiation quality correction factors calculated using TRS-398 recommendations. The reported dose does not depend on the ionization density in the range of 10–150 keV/μm.