NUCLEONICS DATA SHEET No. 18 
Shielding 
Gamma Attenuation with Buildup in Lead and Iron 
By DAVID G. CHAPPELL 
Knolls Atomic Power Laboratory, General Electric Company, Schenectady, New York 
x 
6 20 
a I|RON 
5 (7.6 gm/cm>) 
Gaommo energy (Mev) 
15 
4 
14 = 
c 
° 
‘= 
£ 
-_ 1 
£ 13 i 
~ 1 
7) v 
bd ~— 
a 
c c 
joes 12 2 
é 3 
2 
io] c 
9 Ad 
c 14 < 
° 2 
‘ c 
= a 
= 
re 
10 = 
2 
2 
8 
7 
4 
6 
5 
ie) 
224 
Attenuation factor ( O- 6 ~in. range) 
