If a resistor in a circuit is exposed to a transient gamma radiation pulse, the condition of the circuit will be modified by passing from its steady state condition before radiation to a state of excitation that will depend upon the intensity and duration of the radiation pulse. When the radiation pulse is over, the circuit will then relax to its previous condition of equilibrium within a characteristic time constant.
When energetic radiation, such as gamma radiation, charged particles, or neutrons, strikes matter, it causes several effects which alter the properties of the target material. Some of the effects that occur are ionization of atoms and molecules, displacement of atoms, transmutation of atoms, insertion of extraneous atoms, or changing of chemical bonds. High-energy gamma rays can undergo interactions with a nucleus, producing excitation and transmutations. But these effects are negligible for transient radiation effects produced by typical gamma ray sources compared with photoelectric, Compton, and pair production effects, and can be ignored (Reference15). In this report we shall mainly concern ourselves with the production of free electrons by incident radiation, as we are concerned with transient radiation effects due to pulsed gamma radiation.
In resistors, the observed transient effect is mainly due to secondary electron emission. The secondary electron contribution is not just due to the electrons liberated from the resistor material; it is also due to the emitted secondary electrons from the resistor environment which contribute to the transient effect.
Level of Degree
Electrical and Computer Engineering
First Committee Member (Chair)
Wayne Willis Grannemann
Second Committee Member
Harold Dean Southward
Third Committee Member
William Jackson Byatt
Cates, Harold T.. "Transient Gamma Radiation Effects On Resistors." (1964). https://digitalrepository.unm.edu/ece_etds/546