The intensity of the secondary radiations is weak compared with the intensity of the primaryX-ray beam, and some of it, too, may not escape from the material.
这些次级放射线的强度跟原始x射线相比较弱,而且其中的一部分可能留在了那种物质中。
2
The presented results also include the relations between scattering factors with therapeutical fields and the distances of primaryX-ray source and target plane.
比较的结果还包括均整块和初级准直器的散射与射野大小及离开X射线源距离之间的关系。
3
A suggestion was made to measure thin-film thicknesses using second X-ray fluorescence from substrate excited by primaryX-ray of plating element, and corresponding equations were derived.