Non-linear thermal relaxation waves in high Tc superconductors carrying current

✍ Scribed by T.V. Bandos

• Publisher: Elsevier Science
• Year: 1991
• Tongue: English
• Weight: 650 KB
• Volume: 31
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/0011-2275(91)90220-q

✦ Synopsis

In addition to the conventional wave of normal zone propagation, two new types of nonlinear heat waves have been predicted theoretically in high Tc nitrogen-cooled superconductors under current and the conditions under which they occur are described. These waves are characterized by a concurrent relaxation of the electric fields and hence they define the stability of high T c superconductors. Within the scope of a phenomenological approach, the relationship between transport current and the velocity of transient boiling region boundary motion has been derived from the non-stationary heat transfer equation. The effect of the temperature dependence of the ceramic's resistivity on normal zone dynamics has also been analysed.