QUENCHING RECOVERY OF TAPE FILM TYPE SUPERCONDUCTORS/

The quenching and recovery behaviour of a tape/film type superconducto r subjected to an instantaneous thermal disturbance is investigated. A criterion is developed regarding the possibility of superconductivity recovery after quenching. The criterion involves comparison of two cr itical current density ratios determined by a two-dimensional heat dif fusion analysis: one concerning intrinsic stability, the other concern ing recovery. The results agree with previous stability behaviour data of low T-c Nb-Ti and high T-c YBa2Cu3O7 superconductors.