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现行 ISO 12721:2000
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Non-destructive testing — Thermal neutron radiographic testing — Determination of beam L/D ratio 无损检测——热中子射线照相检测——波束长径比的确定
发布日期: 2000-04-06
本国际标准定义了测量有效准直比的经验技术 以及热中子射线照相束的有效L/D值在20和1000之间。该技术基于 基于中子射线照相图像的分析,并且独立于基于 准直器系统的物理尺寸。本国际标准中描述的器械 在真空盒中使用具有单一乳剂、高分辨率薄膜的Gd箔转换器进行开发和测试。
This International Standard defines an empirical technique for the measurement of the effective collimation ratio and effective L/D of thermal neutron radiography beams for values between 20 and 1 000. The technique is based upon analysis of a neutron radiographic image and is independent of measurements and calculations based on physical dimensions of the collimator system. The device described in this International Standard has been developed and tested using Gd foil converters with a single emulsion, high resolution film in vacuum cassettes.
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归口单位: ISO/TC 135/SC 5
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