Author/Authors :
Parlato، نويسنده , , L. and Ammendola، نويسنده , , G. and Cristiano، نويسنده , , R. and Esposito، نويسنده , , E. and Frunzio، نويسنده , , L. and Kraus، نويسنده , , H. and Lisitskii، نويسنده , , M. and Nappi، نويسنده , , C. and Pagano، نويسنده , , S. and Peluso، نويسنده , , G. and Pepe، نويسنده , , G. and Valko، نويسنده , , P. and Barone، نويسنده , , A.، نويسنده ,
Abstract :
A theoretical model to describe the spectral response of SIS tunnel junctions under irradiation in the presence of diffusion and edge losses of non-equilibrium quasiparticles has been developed. The model takes into account the back-tunnelling effect, in the general case of asymmetrical rates of tunnelling, γ12≠γ21. It provides a quantitative estimate of parameters like the edge reflectivity, the diffusion length and the diffusion coefficient, which are important parameters for a diagnostic of STJ-detectors. The predictions of the theory are compared with an experimental spectrum obtained from a Nb-based STJ.
