Measurement of Characteristic Time of Quantized Vortex Development Using a Thermal Shock Wave

Abstract

This chapter derives the characteristic time of quantized vortex development by analyzing the thermal shock wave profiles measured with a superconductive temperature sensor. In this study the characteristic time of quantized vortex development, defined from the point of view of a transient heat transfer, is derived by analyzing the thermal shock wave profiles measured with a superconductive temperature sensor. The result is also compared with the numerical result based on the vortex line density equation. A thermal shock wave generated by a pulsed heating from a planar heater is deformed through the interaction with quantized vortices. The deformation is measured by means of a superconductive temperature sensor. It is found that the characteristic time is inversely proportional to the square of applied heat flux. It is also found that appreciable effect appears on transient heat transfer if the vortex line density exceeds approximately 105cm/cm3.