Non-destructive testing—Thermal neutron radiographic testing—Determination of beam L/D ratio
IDT ISO 12721:2000
全国无损检测标准化技术委员会(SAC/TC 56)
本标准规定了测定热中子照相中子束准直比(L/D值在20~1 000之间)的试验技术。本技术基于零全影区器件分析中子照相的成像质量，无需测量和计算准直器系统的物理尺寸。本标准中所采用的器件均已通过置于真空暗盒内的Gd箔转换屏和高分辨单面胶片进行了测试。
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