Radiation - Tolerant Logarithmic Amplifier

In any conceptual design of a flight vehicle utilizing nuclear-type propulsion the amount of necessary shielding will detract from the allowable payload. The ability of electronic instruments to tolerate radiation and temperature extremes will then be of prime importance in these designs. This report describes the development and performance of a radiation and vibration tolerant instrument for use in the neutron flux control of a nuclear ramjet engine.