Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992esasp.356..313g&link_type=abstract
In ESA, Proceedings of an ESA Symposium on Photon Detectors for Space Instrumentation p 313-316 (SEE N94-15025 03-19)
Astronomy and Astrophysics
Astronomy
Niobium, Radio Astronomy, Receivers, Sis (Superconductors), Design Analysis, Junction Diodes, Research And Development, Tunnel Diodes
Scientific paper
The sharp onset of the quasiparticle current in Superconductor Insulator Superconductor (SIS) tunnel junctions is used for frequency mixing in radioastronomical receivers. Efforts to develop and routinely produce various Nb based devices for frequencies up to 690 GHz are outlined. The fabrication and properties of single (SIS) and double barrier (SISIS) devices, anodization spectroscopy, thermal annealing, a method to prepare submicron junctions using optical lithography and on Nb based SIN junctions, are reported. The latter type has no Josephson effects which can interfere with low noise quasiparticle mixing.
Billon-Pierron D.
Gundlach Karl-Heinz
Lehnert T.
Pasturel P.
Voss Max
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