Radiation Hardened Sampled Data System

A radiation-hardened data recording system has been designed, fabricated and tested. The employed data sampling and recording technique samples the input signal waveshape and stores the instantaneous voltage in a memory bank for subsequent data read-out or telemetry. A design concept, incorporating parallel write-in, variable-rate sampling and tunnel-diode memory, was implemented for development of a ten-megacycle prototype system. The prototype system exhibited radiation hardness in excess of 3 x 1010 rads(Si)/ sec and 1014Nvt, with promise of extending the design concept to provide another order of magnitude radiation hardness.