X-ray response of Nb-based superconducting tunnel junctions with AL trapping layers

Details X-ray response of Nb-based superconducting tunnel junctions with AL trapping layers X-ray response of Nb-based superconducting tunnel junctions with AL trapping layers

Sep 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995spie.2518..278v&link_type=abstract

Proc. SPIE Vol. 2518, p. 278-285, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI, Oswald H. Siegmund; John V. Valler

Astronomy and Astrophysics

Astronomy

1

Scientific paper

Measurements of the x ray response of niobium-based superconducting tunnel junctions with Al trapping layers are presented. Signal amplitudes equivalent to as many as 2.3 multiplied by 10(superscript 8) tunneled electrons for a 5.9 keV photon are observed, corresponding to an amplification factor of approximately 100 per initially created quasiparticle in niobium. The detectors, however, exhibit a significant non-linearity in their energy response. The energy resolution is approximately 140 eV FWHM at 5.9 keV.

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