1987 年 22 巻 3 号 p. 181-185
In succession of part I of this paper, the stability margin of a tape superconductor is analysed theoretically in order to prove scientific feasibility of high current density, large-scale superconductors. As a typical example, Cu-Nb3Sn-Cu conductor is investigated: The thickness of Cu and Nb3Sn are 1mm and 50μm, respectively and the strip width is 50mm. If the critical current density of limiting stability Jc=1.29×1010A/m2 is assumed, the stability margin of pulsive field applied perpendicular to the broad face of the conductor becomes 4.9T. The thermal margin is shown to be about 5×104J/m3 when disturbances are point-like, transient nature. These results indicate that the tape conductor is stable enough to be wound into superconducting magnets.