Particle Detection with Superconducting Tunnel Junctions—Modelling the Non-Equilibrium State Generated by Particle Interactions
Superconducting tunnel junctions (STJ’s) have attracted much interest as high resolution detectors for nuclear particles. Detection schemes have been implemented where the STJ provides the read-out for particle interactions in the superconducting films which comprise the junction. Alternatively the STJ may provide read-out for particle absorption in a dielectric or superconducting absorber crystal. We give here an overview of current work directed towards understanding the details of the phonon and quasiparticle yields in superconductors, and thus establishing a theoretical basis for the ultimate energy resolution and how it varies from one material to another.
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