Generation-recombination noise produced in the channel of JFET's

Measurements are presented of noise in JFET's at low temperatures (80-200 K) for devices having a low pinch-off voltage. The noise spectra show the presence of several types of generation-recombination g-r processes. Two processes are attributed to traps in the channel. Further, at the lowest temperatures a long plateau, associated with donor transitions, is observed.