RESONANCE OF LOW-FREQUENCY COLLECTIVE PLASMA-OSCILLATIONS AT PHASE-SLIP CENTERS

The resonance properties of the lot: frequency collective plasma modes excited in the nonequilibrium region of the superconductor by a phase -slip center in the non-Josephson oscillation regime (NJO) were studie d. These propagating plasma modes of superconducting electrons are of technical importance because of the wave guiding properties of a singl e superconducting film. We have studied changes in resonance frequency of these oscillations depending on the superconducting film thickness It was determined that this effect is closely related to the magnitud e of the superconductor kinetic inductance. For the nonequilibrium reg ion of 10 microns length it was found that near the temperature of the superconducting transition ( T > 0,99 . T-c) the resonance frequency lies in the radio-frequency band close to 30 MHz.