ABSTRACT
I. In tro d u c tio n .................................................................................................................... 80
II. X-Ray and y-Ray Interactions...................................................................................... 80 A. In tro d u c tio n ....................................................................................................... 80 B. Concept of Cross Section..................................................................................81 C. Photoelectric E ffe c t...........................................................................................83 D. Com pton E f f e c t ................................................................................................. 84 E. Pair P ro d u c tio n ................................................................................................. 88 F. A ttenuation and Absorption Coefficients....................................................89
