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Non-screen film (rt)
| Глоссарий терминов по технологиям неразрушающего контроля (NDT) |
X-ray film designed for use with or without metal screens, but not intended for use with salt screens. it may be of relatively high speed and coarse grain (ordinary non-screen film) or of lower speed and finer grain (fine grain non-screen film).
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Relatively, английский
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Screen mottle (rt), английский
(fluorescent screen exposures) the visual impression of irregularity of density, in areas where the exposure is macroscopically uniform, due to the random spatial distribution of x-ray quanta absorbed in the screens. screen mottle is much larger in scale and “softer” in outline than film graininess. see film graininess.
Characteristic radiation (rt), английский
X-radiation consisting of discrete wavelengths which are characteristic of the emitting material.
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