EFFECTS OF GAMMAS AND NEUTRONS ON LEAD SELENIDE DETECTORS
Technical rept. Feb-May 1966
AIR FORCE WEAPONS LAB KIRTLAND AFB NM
Pagination or Media Count:
Objectives of this program were to determine the effect of neutrons from a near nuclear burst on infrared systems. A cooled lead selenide detector -80 C was radiated, using the fast burst reactor at White Sands Missile Range to provide a neutron flux of approximately 10 to the 13th power neutronssq. cm. A series of six bursts was conducted over a 2-day period. Results show a large output from the detector at burst time. The recovery time from this pulse is on the order of from 3 to 5 milliseconds. This is approximately 100 times the burst pulse width. There is some indication that a period of approximately 100-150 milliseconds is required before postburst operation of the detector is exactly equivalent to the preburst operation. Recalibration of the detector after the burst series indicated a very small loss in sensitivity. In general, the postburst noise and resistance figures were slightly higher than the preburst values.
- Infrared Detection and Detectors
- Fission Reactor Physics