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Response of the Killed Electrode in STJ X-ray Detectors

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Abstract

The signals of STJ detectors Ti/Nb/Al,AlO x /Al/Nb/NbN with killed Ti/Nb electrode were studied as a function of the bias voltage, the energy of the absorbed quanta and the thickness of the electrodes. The nonlinearity of the energy calibration for the killed electrode signal had a positive curvature due to the quasiparticles self-recombination losses and 2Δ-phonon exchange. Suppression of residual signals of the killed electrode was achieved by increasing the thickness of this electrode.

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Acknowledgements

This work was supported by the Ministry of Education and Science of the Russian Federation (contract No. 02.740.11.0242).

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Authors and Affiliations

  1. Skobeltsyn Institute of Nuclear Physics, Lomonosov Moscow State University, 119991, Moscow, Russian Federation

    V. A. Andrianov

  2. Faculty of Computational Mathematics and Cybernetics, Lomonosov Moscow State University, 119991, Moscow, Russian Federation

    V. P. Gorkov

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  1. V. A. Andrianov
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  2. V. P. Gorkov
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Correspondence to V. A. Andrianov.

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Andrianov, V.A., Gorkov, V.P. Response of the Killed Electrode in STJ X-ray Detectors. J Low Temp Phys 167, 410–415 (2012). https://doi.org/10.1007/s10909-011-0432-3

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  • DOI: https://doi.org/10.1007/s10909-011-0432-3

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