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, gamma(12) not equal gamma(21). 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. (C) 2000 Elsevier Science B.V. All rights reserved.
Quasiparticle diffusion and edge losses in superconducting tunnel junction detectors with two active electrodes / Parlato, Loredana; G., Ammendola; R., Cristiano; E., Esposito; L., Frunzio; H., Kraus; M., Lisitskii; C., Nappi; S., Pagano; Peluso, Giuseppe; Pepe, GIOVANNI PIERO; P., Valko; A., Barone. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - STAMPA. - 444:(2000), pp. 15-18. [10.1016/S0168-9002(99)01318-2]
Quasiparticle diffusion and edge losses in superconducting tunnel junction detectors with two active electrodes
PARLATO, LOREDANA;PELUSO, GIUSEPPE;PEPE, GIOVANNI PIERO;
2000
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, gamma(12) not equal gamma(21). 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. (C) 2000 Elsevier Science B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
