Title :
Origination of propagating normal domains in large composite superconductors
Author :
Kovner, V.S. ; Kupferman, R. ; Mints, R.G.
Author_Institution :
Sch. of Phys., & Astron., Tel-Aviv Univ., Ramat-Aviv, Israel
fDate :
3/1/1993 12:00:00 AM
Abstract :
The origination of propagating normal domains in large superconducting composites is studied numerically by means of an effective circuit model. The initial perturbation is considered to be a thermal pulse. The minimum energy required to form a propagating normal domain is calculated as a function of the dimensionless transport current, and three parameters characterizing the cooling conditions and the conductor. An analytical expression is proposed to determine this energy in the region of parameters of practical interest.<>
Keywords :
Maxwell equations; composite superconductors; critical current density (superconductivity); fluctuations in superconductors; numerical analysis; superconducting magnet energy storage; superconducting magnets; superconducting transition temperature; Maxwell equation; analytical expression; cooling conditions; dimensionless transport current; effective circuit model; initial perturbation; large superconducting composites; minimum energy; normal domain propagation; numerical analysis; numerical simulation; superconducting magnetic energy storage; thermal pulse; Circuits; Conductors; Cooling; Equations; Multifilamentary superconductors; Resistors; Superconducting magnetic energy storage; Superconductivity; Thermal conductivity; Threshold current;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
