She asp eiarllittitoe Gov a
AH
EXPOSURE RATE X 100
3s
a
B38
6
7
8
=
Bree
noe meen
me emcees oeetee ten Ro At pny Fege pe
(MeV/gm~sec)
pane Fe
HEIGHT
(METERS)
Figure l.
Total ara scattered exposure rates versus height for
uniformly distributed scurces with energies cf .364, 1.0 and 2.5
MeV and the single rormalized curve of exposure rates for
natural emitters.