Of (£,), 10*8coulombe
Efficiency

Energy (E,), mev

Transmission Ratio (1/1 o

Figure 8.1 Efficiency of neutron detectors versus neutrom energy.

—___|

$00

1000

|

Dose,r

is00

Figure 2.2 Transmusaion of KBr crystal vereus gamma-ray dose.

18

2000

2500

Select target paragraph3