THE YIELD FROM X-RAY TUBES IN TERMS OF AMBIENT DOSE-EQUIVALENT

The yield from X my tubes in terms of the quantity ambient dose equiva lent has been determined experimentally. The experimental arrangements used in all three different tubes/generators over the tube potential range from 30 to 300 kV are described and the results are presented. A fter having established a basis for a comparison between the old data in terms of exposure with the new data in terms of ambient dose equiva lent it is demonstrated that the yield is decreased at low tube and in creased at high tube voltages by a transition from old to new quantiti es. With the help of the data presented the strength of radiation prot ection shielding may be estimated using the quantity ambient dose equi valent.