Abstract
A systematic investigation of the effect of exposure and development parameters on density and especially granularity of X-ray photographs was performed for one X-ray wavelength (MoKα) and one photo emulsion (nuclear plates L4/50 μm). The chief result is as follows: The granularity – and herewith the spatial resolution – can only be improved by increase of the illumination (exposure time) combined with reduced development, related to any chosen standard values. It is of no significance if that takes place by reduced developper temperature or concentration, or simply by shortening the developping time. – Therefore advice: For normal claims to resolution simply develop 15min at room temperature (20°C). For higher claims increase exposure time and reduce developping time both by the same rate (2–4). Much processing time is safed and no damage purchased in this way which renounces with complicated and lengthy procedures.
Some secondary results concerning the dependence of the density (gradation) on each of the single parameters, all the other ones presumed constant, are given.
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