1.1这是一种使用三醋酸纤维素（CTA）剂量测定系统测量光子或电子辐照材料中对水的吸收剂量的做法。CTA剂量测定系统被归类为常规剂量测定系统。 1.2根据影响量对其响应的复杂影响，将CTA剂量计归类为II型剂量计（见ASTM惯例） E2628 ). 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 ” 对于CTA剂量测定系统。本文件拟与ASTM一起阅读 E2628 . 1.4本规程涵盖在以下条件下使用CTA剂量测定系统: 1.4.1吸收剂量范围为10 kGy至300 kGy。 1.4.2吸收剂量率范围为3 Gy/s至4 Gy/s × 10 10 Gy/s (1) . 1.4.3光子能量范围为0.1至50 MeV。 1.4.4电子能量范围为0.2至50 MeV。 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====== CTA剂量计系统提供了一种基于暴露于电离辐射后CTA剂量计中光吸收率的变化来测量吸收剂量的方法 (5, 7-14) . CTA剂量测定系统通常用于工业辐射处理，例如聚合物的改性和医疗保健产品的灭菌。 CTA剂量计胶片在吸收剂量图中特别有用，因为它以条带格式提供，如果使用条带测量设备进行测量，它可以提供比使用离散点更高分辨率的剂量图。

1.1 This is a practice for using a cellulose triacetate (CTA) dosimetry system to measure absorbed dose in materials irradiated by photons or electrons in terms of absorbed dose to water. The CTA dosimetry system is classified as a routine dosimetry system. 1.2 The CTA dosimeter is classified as a type II dosimeter on the basis of the complex effect of influence quantities on its response (see ASTM Practice E2628 ). 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 a CTA dosimetry system. It is intended to be read in conjunction with ASTM E2628 . 1.4 This practice covers the use of CTA dosimetry systems under the following conditions: 1.4.1 The absorbed dose range is 10 kGy to 300 kGy. 1.4.2 The absorbed-dose rate range is 3 Gy/s to 4 × 10 10 Gy/s (1) . 1.4.3 The photon energy range is 0.1 to 50 MeV. 1.4.4 The electron energy range is 0.2 to 50 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 and health practices and determine the applicability of regulatory limitations prior to use. ====== Significance And Use ====== The CTA dosimetry system provides a means for measuring absorbed dose based on a change in optical absorbance in the CTA dosimeter following exposure to ionizing radiation (5, 7-14) . CTA dosimetry systems are commonly used in industrial radiation processing, for example in the modification of polymers and sterilization of health care products. CTA dosimeter film is particularly useful in absorbed dose mapping because it is available in a strip format and if measured using a strip measurement device, it can provide a dose map with higher resolution than using discrete points.