Digital Computer Determination of Alpha Source Activity A technique is described for determining the activity and homogeneity of an alpha source. It is believed that the technique, using a digital computer, has many uses and applications in the field of nuclear physics. The technique involves computer manipulation of the digital image of the nuclear source. Experimental details are given. CACM January, 1964 Robbins, D. Taylor, W. E. CA640111 JB March 10, 1978 5:14 AM 1144 5 1144 1144 5 1144 1144 5 1144