Nb tunnel junctions as x-ray spectrometers

Nicola Rando; Anthony J. Peacock; Clare L. Foden; Axel van Dordrecht; Ralph Engelhardt; John M. Lumley; Carl Pereira

doi:10.1117/12.48352

1 October 1991 Nb tunnel junctions as x-ray spectrometers

Nicola Rando, Anthony J. Peacock, Clare L. Foden, Axel van Dordrecht, Ralph Engelhardt, John M. Lumley, Carl Pereira

Proceedings Volume 1549, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy II; (1991) https://doi.org/10.1117/12.48352
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

The properties of niobium superconducting tunnel junctions as x-ray detectors are investigated. The charge output, which depends on the geometry of the system, is severely reduced by self recombination in small size junctions and the specific characteristics of the barrier. These loss mechanisms, coupled with another energy loss mechanism due to phonon propagation into the substrate, cause additional variances on the charge output, which degrade the energy resolution.

Citation Download Citation

Nicola Rando, Anthony J. Peacock, Clare L. Foden, Axel van Dordrecht, Ralph Engelhardt, John M. Lumley, and Carl Pereira "Nb tunnel junctions as x-ray spectrometers", Proc. SPIE 1549, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy II, (1 October 1991); https://doi.org/10.1117/12.48352

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