wo — Toran eee scanners one ~ 4.0) 2 = ~~ = ce oe “ es 2 Os 3 . x ol 0 ! t oe 2 i boot . Effective Energy, kev tt L 103 Loot td pb 0 Figure 2.7 DuPont 502 energy dependence curve normalized to Coyalue. (Film in NBS holder.) 1.5) PY " 10 a z=~ $ SL c © wa oe 2 5 eo? a°0 10 l 1 i 9 tb to* L 4 })) Effective Energy, kev bs ft at 109 I Figure 2.8 DuPont 510 energy dependence curve normalized to Co® value. (Film in NBS holder.) 25 1 2p i 1 10