Analytical Techniques for the Determination of Equipment Probability of Survival to Radiation Stress

Two analytical techniques (Monte Carlo and Small Sample Theory) are described which have been used to produce a survivability function, PS(RS), for equipment subject to a radiation stress, RS. The methods have been used for permanent damage due to neutron fluence and transient upset due to ionizing radiation. The methods are illustrated using a series regulator circuit. The techniques are sufficiently general such that they are applicable to a variety of environmental stresses.