Импульсное Намагничивание Короткозамкнутой Катушки Из ВТСП

Abstract

In this paper is described the pulsed magnetization of a 20-turn short-circuited coil from a stabilized HTSC-2G tape. The trapped field in the coil is close to the value obtained at the field cooling (FC) process and varies only slightly with a 5-fold increase in the amplitude of the magnetizing pulse. The copper coating of the tape significantly reduces the effects of pulsed heating. The relaxation of the current in the initial stage is determined by the flow of current between the superconducting and normal layer and the type of the current-voltage characteristic. At large times (t> 100 s), attenuation is determined by the contact resistance of the junction.