DocumentCode :
1542471
Title :
Soft X-ray performance of superconducting tunnel junction arrays
Author :
Verhoeve, P. ; Kraft, S. ; Rando, N. ; Peacock, A. ; van Dordrecht, A. ; Den Hartog, R. ; Goldie, D.J. ; Hart, R. ; Glowacka, D.
Author_Institution :
Dept. of Space Sci., Eur. Space Agency, Noordwijk, Netherlands
Volume :
9
Issue :
2
fYear :
1999
fDate :
6/1/1999 12:00:00 AM
Firstpage :
3342
Lastpage :
3345
Abstract :
A number of 6/spl times/6 element arrays of Ta-based superconducting tunnel junctions have been manufactured for photon counting applications with moderate energy resolution in ground-based optical astronomy. The individual array elements show low leakage, uniform responsivity across the array, good simultaneous Josephson current suppression and minor crosstalk between adjacent pixels. The same arrays have been characterized in the soft X-ray range (E=270-1500 eV). The base electrode response shows good energy resolving power (E//spl Delta/E/spl ap/140). Unwanted spectral features originating from other parts of the detector can be largely eliminated by rise-time filtering. Modifications in the layering are necessary in order to improve the soft X-ray detection efficiency.
Keywords :
X-ray astronomy; X-ray detection; astronomical telescopes; photon counting; superconducting junction devices; superconducting particle detectors; 270 to 1500 eV; Ta; Ta-based superconducting tunnel junctions; base electrode response; ground-based optical astronomy; layering modifications; low leakage; minor crosstalk between pixels; moderate energy resolution; photon counting; rise-time filtering; simultaneous Josephson current suppression; soft X-ray detection efficiency; soft X-ray performance; superconducting tunnel junction arrays; uniform responsivity; Astronomy; Detectors; Electrodes; Energy resolution; Josephson effect; Josephson junctions; Manufacturing; Optical arrays; Optical crosstalk; Optical filters;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/77.783745
Filename :
783745
Link To Document :
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