U-Scope Patternsの解析

抄録

This is a supplement to the previous paper on a high speed locator of radioactive sources in fields and mines. In the present paper, characteristic of the scanning collimator which is attached to the contrivance and features of the patterns which are frequently obtained with U-Scope are treated analytically. Examples of typical patterns and their classification are given: for examples, simple patterns, compound patterns, complex patterns, background patterns, diffused or granite patterns and over-scale patterns. All of them are illustrated with some explanations. From these examples it can easily be concluded that the C. R. T. display of U-Scope is the most effective method of data indication, as it gives the complete information concerning the presence of radio-active sources around the observer, in fact, the feature of this method is the simultaneous exhibition of directional distribution of the intensity of radiation, plotting new data from moment to moment, and visualizing the records that last long enough for observation then fade gradually.
U-Scope is taken for a universal detector of radioactivity with the advantages of being a locator, a counter, a ratemeter and a recorder. It helps the geologist in discovering radioactive resources directly without being misled by pseud sources such as granite stones on the road, a granite quarry and the like.
No doubt, topographical and geological knowledge will still more facilitate the reconnaissance of radioactive minerals. Use of U-Scope is also invaluable in detecting stray radioactive rays in the surroundings of hospitals, institutes, factories and so on.