Abstract
We carried out 20-ps pulse laser irradiation experiments to a superconducting MgB 2 meander line to understand a thermal excitation and relaxation processes, which are critical for developing as MgB 2 neutron detectors. We observed an exponential thermal–relaxation signal, resulting from pulse laser irradiation. The response time was faster than 1 μs, meaning that the detector would be capable of counting events at a rate of more than 10 6 events per second. The nonequilibrium process was realistically simulated by means of the system of the time-dependent Ginzburg–Landau equation, the Maxwell equation, and the heat diffusion equation.
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