1.1 这是一种使用聚甲基丙烯酸甲酯（PMMA）剂量测定系统来测量由光子或电子辐照的材料中的吸收剂量的实践，即对水的吸收剂量。PMMA剂量测定系统通常用作常规剂量测定系统。 1.2 根据影响量的复杂作用，PMMA剂量计被归类为II型剂量计（参见ASTM实践 52628 ). 1.3 本文件是为在辐射处理中正确实施剂量测定提供建议的一组标准之一，并描述了实现符合ASTM要求的方法 52628 PMMA剂量测定系统的“辐射处理中剂量测定实践”。它旨在与ASTM实践一起阅读 52628 . 1.4 本规范涵盖PMMA剂量测定系统在以下条件下的使用:1.4.1 吸收剂量范围为0.1 kGy~150 kGy。 1.4.2 吸收剂量率为1 × 10 −2 至1 × 10 7 吉·秒 −1 . 1.4.3 光子能量范围为0.1至25MeV。 1.4.4 电子能量范围为3至25MeV。 1.5 本标准并不旨在解决与其使用相关的所有安全性问题（如果有）。本标准的使用者有责任在使用前建立适当的安全、健康和环境实践并确定法规限制的适用性。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。======意义和用途====== 4.1 PMMA剂量测定系统提供了一种用于基于光吸收的变化测量吸收剂量的装置。 4.2 PMMA剂量测定系统通常用于工业辐射处理，例如用于医疗设备的灭菌和食品的辐照。

1.1 This is a practice for using polymethylmethacrylate (PMMA) dosimetry systems to measure absorbed dose in materials irradiated by photons or electrons in terms of absorbed dose to water. The PMMA dosimetry system is generally used as a routine dosimetry system. 1.2 The PMMA dosimeter is classified as a Type II dosimeter on the basis of the complex effect of influence quantities (see ASTM Practice 52628 ). 1.3 This document is one of a set of standards that provides recommendations for properly implementing dosimetry in radiation processing, and describes a means of achieving compliance with the requirements of ASTM 52628 “Practice for Dosimetry in Radiation Processing” for a PMMA dosimetry system. It is intended to be read in conjunction with ASTM Practice 52628 . 1.4 This practice covers the use of PMMA dosimetry systems under the following conditions: 1.4.1 the absorbed dose range is 0.1 kGy to 150 kGy. 1.4.2 the absorbed dose rate is 1 × 10 −2 to 1 × 10 7 Gy·s −1 . 1.4.3 the photon energy range is 0.1 to 25 MeV. 1.4.4 the electron energy range is 3 to 25 MeV. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 The PMMA dosimetry system provides a means for measuring absorbed dose based on a change in optical absorbance. 4.2 PMMA dosimetry systems are commonly used in industrial radiation processing, for example in the sterilization of medical devices and the irradiation of foods.