205 THERMAL“RADIATION DETECTOR
The thermal-radiation detector consists of a phototube, amplifier,
end high end low bend-paes filters. The phototube output is produced
by incident thermal rediation from a nuclear device, lightning strokes,
or other sources,
Yhis output is fed to a high bend<pass filter that
passes only siqnale with a rise time similar to those due to nuclear
Getonstions, and to a low band-pass filter thet passes only those
signals with a duration typical of mclear detonstions.
Thus, an
incident therml-radiation signal must have both a rise time and a
duration typical of nuclear devices in osder to activate the thermalradiation detector,
ft
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