1. Taken from unpublished data of J. A. DEJUREN, M. REIER, R. W. STOOKSBERRY at Bettis Laboratory in 1958. A possibility has recently been discovered that the foils might have been 15.2 mg cm−2instead of 17.66 mg cm−2; if so, Fig. 2, through a change in Eq. (1), would be slightly improved.
2. R. D. EVANS, “The Atomic Nucleus,” Chap. 21. McGraw-Hill, New York, 1955.
3. Reflection and transmission of gamma radiation by barriers: Semianalytic Monte-Carlo calculation
4. Reflection and transmission of gamma radiation by barriers: Semianalytic Monte-Carlo calculation
5. S. GLASSTONE AND M. C. EDLUND, “The Elements of Nuclear Rector Theory.” Van Nostrand, New York, 1952.