Astronomy and Astrophysics – Astronomy
Scientific paper
Oct 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992spie.1743...36k&link_type=abstract
In: EUV, X-ray, and gamma-ray instrumentation for astronomy III; Proceedings of the Meeting, San Diego, CA, July 22-24, 1992 (A9
Astronomy and Astrophysics
Astronomy
High Resolution, Superconducting Devices, Tunnel Diodes, X Ray Spectroscopy, Charge Coupled Devices, Elementary Excitations, Energy Spectra, Trapped Particles
Scientific paper
We are developing detectors based on superconducting tunnel junctions which will provide position sensitive detectors with much better energy resolution than current state of the art CCD cameras. The amount of energy required to create a charge carrier in a superconductor is about three orders of magnitude smaller than in standard semiconductor detectors. The drawback of the necessarily small size of superconducting tunnel junctions has been compensated by a separation of X-ray absorber and detecting tunnel junction ('quasiparticle trapping'). We report on results with our detector which can resolve the 5.89 keV manganese line with an energy resolution of better than 60 eV. In addition, position resolution better than 5 microns has been demonstrated with an absorber 470 microns long. To match the detector to the spot size of the X-ray optics in use, a multielement detector is under development.
Gutsche M.
Jochum Josef
Kemmather B.
Kraus Hannes
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