Pulse propagation on a superconductive neuristor

Both analytic study and experimental investigations on an electronic analog are presented which indicate the unstable nature of Parmentier's traveling-wave pulse on a superconductive neuristor. In the vicinity of a critical bias level, the pulse is almost stable in the sense that pulse distortion over a finite distance can be made arbitrarily small by adjusting the bias to be sufficiently close to the critical value. It is also shown that the strength-duration curve for threshold excitation can be obtained by equating input magnetic flux to that of Parmentier's pulse. Finally an R-T junction has been realized by resistive coupling of two neuristor lines and used to introduce a circulating pulse onto a storage ring