Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996spie.2808..523p&link_type=abstract
Proc. SPIE Vol. 2808, p. 523-533, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VII, Oswald H. Siegmund; Mark A. Gummi
Astronomy and Astrophysics
Astronomy
8
Scientific paper
Nb/Al/AlO(subscript x)/Al/Nb superconducting tunnel junctions (STJs) have been studied extensively as photon detectors, because of their intrinsic capabilities in terms of charge output and energy resolving power. A critical element in such an STJ is the aluminum layer which separates the superconductive Nb from the AlO(subscript x) tunnel barrier. In this paper, the role of this Al layer is investigated. The behavior of high quality STJs, differing by the Al thickness only, is analyzed. Five thicknesses ranging between 5 nm and 120 nm are considered. The charge output, the energy linearity and resolution for the case of 6 keV x-ray photons are discussed.
Goldie David J.
Peacock Anthony J.
Poelaert Abel
Rando Nicola
Venn R.
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