0.9 -

—_

0.8
0.7

O
A
ea

'

Relative exposure rate (LIF response)

1.0 -—

0.6 -0.55

0.4

0

J

500

_l

4

1000

1500

Vv

Medium

+

Minimal _

—

|

i

2000

2500

Absorber thickness (mg/cm?)

Fig. 3

S5O0u 304

L

3000

Select target paragraph3