FIFTH CANADIAN CONFERENCE ON NONDESTRUCTIVE ... - IAEA

- 38A -
VOLTAGE L S T S
Y Y Y
s
TIME
Fig. 6(a). Schematic diagram of a position sensitive proportional
counter.
Fig. 6(b). Voltage pulses produced at the ends of the counter
wires by an X-ray absorbed by the counter gas at X.
Fig. 6(c). Shaped voltage pulses with cross-over times proportional
to rise times of the initial pulses.
Fig. 6(d). Sharp, pulses marking the cross-over times. The pulse
at S is delayed by an amount S to S' so that the
separation T is proportional to X.