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Quasiparticle diffusion and edge losses in superconducting tunnel junction detectors with two active electrodes

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.
Publication status:
Published

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Publisher copy:
10.1016/S0168-9002(99)01318-2

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Journal:
NUCLEAR INSTRUMENTS and METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT More from this journal
Volume:
444
Issue:
1-2
Pages:
15-18
Publication date:
2000-04-11
Event title:
8th International Workshop on Low-Temperature Detectors (LTD-8)
DOI:
ISSN:
0168-9002


Keywords:
Pubs id:
pubs:17795
UUID:
uuid:01c8cba2-41cb-49e7-97b5-aed04f6248c0
Local pid:
pubs:17795
Source identifiers:
17795
Deposit date:
2012-12-19
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