Normal zone initiation in composite superconductors
โ Scribed by A.L. Rakhmanov
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 392 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0011-2275
No coin nor oath required. For personal study only.
โฆ Synopsis
The initiation of superconducting state instability in composite superconductors due to heat disturbances is investigated. The instability development results as a rule in the transition of the superconductor into the resistive state and normal zone propagation along the conductor, It is shown that in the case of high current density, thick conductors and poor cooling the heat power necessary to initiate the instability may be small compared to the heat power necessary to warm the superconductor to the temperature of the resistive transition,
๐ SIMILAR VOLUMES
This paper presents a numerical analysis of the evolution of normal zones in a composite superconductor based on a novel heat conduction equation which takes into account the finite speed of thermal wave propagation and the inertia of the internal heat source. The results are compared with those obt
This paper describes the technique and results of an experimental study on the propagaffon of normal zones under non-equilibrium conditions in composite superconductors. Bifilar windings of these superconductors were separated from the power source by a uniform magnetic field to allow the characteri
The perturbations induced by the varying current I or magnetic field may result in the instability of the superconducting state at some I=I m *I m there is no stable homogeneous superconducting state. The obtained result~ may be essential for understanding of the quench in the pulse magnet systems (
The thermoelectric mechanism of the asymmetrical velocity of normal zone propagation in superconductors, relative to the direction of the transport current is suggested. The difference of the normal-superconducting interface velocities parallel and anti-parallel to the current direction due to this
consideration of the thermal propagation of a half infinitive normal zone in a superconductor with time-dependent current is given. The model implies tamperatureindependent coefficients of the thermal conductivity equation and the change in the dissiptative conductor properties at a certain critical