1.1本规程涵盖了使用丙氨酸EPR剂量测定系统测量材料光子和电子辐射处理中吸收剂量的剂量计材料、仪器和程序。该系统基于氨基酸丙氨酸衍生自由基的电子顺磁共振（EPR）光谱。 1.2丙氨酸剂量计被归类为I型剂量计，因为它以明确定义的方式受到单个影响量的影响，可以用独立校正因子表示（见ASTM惯例） E2628 ). 丙氨酸剂量计可用于参考标准剂量计系统或常规剂量计系统。 1.3本文件是一组标准之一，提供了在辐射处理中正确实施剂量测定的建议，并描述了实现符合ASTM要求的方法 E2628 “ 辐射处理中剂量测定的实施规程 ” 用于丙氨酸剂量测定系统。应结合ASTM标准阅读 E2628 . 1.4本规程涵盖了在以下条件下进行剂量测量的丙氨酸EPR剂量测定系统: 1.4.1吸收剂量范围在1到1.5之间 × 10 5. Gy。 1.4.2吸收剂量率高达10 2. Gy s公司 -1 用于连续辐射场，最多3个 × 10 10 Gy s公司 -1 对于脉冲辐射场 (1-4) . 1.4.3光子和电子的辐射能量在0.1至30 MeV之间 (1, 2, 5-8) . 1.4.4辐照温度介于 – 78 ° C和+70 ° C (2, 9-12) . 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全和健康实践，并确定监管限制的适用性。 ====意义和用途====== 丙氨酸EPR剂量测定系统提供了一种测量吸收剂量的方法。它基于电离辐射产生的结晶丙氨酸中特定稳定自由基的测量。 丙氨酸EPR剂量测定系统用于辐射应用中的参考或转移标准或常规剂量测定系统，包括:医疗器械和药品的灭菌、食品辐照、聚合物改性、医疗治疗和材料的辐射损伤研究 (1, 13-15) .

1.1 This practice covers dosimeter materials, instrumentation, and procedures for using the alanine-EPR dosimetry system for measuring the absorbed dose in the photon and electron radiation processing of materials. The system is based on electron paramagnetic resonance (EPR) spectroscopy of free radicals derived from the amino acid alanine. 1.2 The alanine dosimeter is classified as a type I dosimeter as it is affected by individual influence quantities in a well-defined way that can be expressed in terms of independent correction factors (see ASTM Practice E2628 ). The alanine dosimeter may be used in either a reference standard dosimetry system or in a routine dosimetry system. 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 E2628 “ Practice for Dosimetry in Radiation Processing ” for alanine dosimetry system. It should be read in conjunction with ASTM E2628 . 1.4 This practice covers alanine-EPR dosimetry systems for dose measurements under the following conditions: 1.4.1 The absorbed dose range is between 1 and 1.5 × 10 5 Gy. 1.4.2 The absorbed dose rate is up to 10 2 Gy s -1 for continuous radiation fields and up to 3 × 10 10 Gy s -1 for pulsed radiation fields (1-4) . 1.4.3 The radiation energy for photons and electrons is between 0.1 and 30 MeV (1, 2, 5-8) . 1.4.4 The irradiation temperature is between – 78 ° C and + 70 ° C (2, 9-12) . 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== The alanine-EPR dosimetry system provides a means for measuring absorbed dose. It is based on the measurement of specific stable free radicals in crystalline alanine generated by ionizing radiation. Alanine-EPR dosimetry systems are used in reference- or transfer-standard or routine dosimetry systems in radiation applications that include: sterilization of medical devices and pharmaceuticals, food irradiation, polymer modifications, medical therapy and radiation damage studies in materials (1, 13-15) .