| 摘要 |
<p>Oxyhalides of lanthanum and gadolinium activated with thulium are found to be superior in their conversion efficiency of X-rays to visible light when compared with conventional X-ray phosphors. These phosphors are used as X-ray image converters generally, and can be used in such devices as X-ray image-intensifier tubes, in fluoroscopic screens and in radiographic intensifier screens.</p> |
