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Proceedings Paper

Application of crystal absorbers coupled to superconducting tunnel junctions for the measurement of x rays
Author(s): Christian Erd; Abel Poelaert; Peter Verhoeve; Nicola Rando; Anthony J. Peacock
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Paper Abstract

The possibility of using superconducting tunnelling junctions (STJ) coupled to a crystal absorber for x-ray spectroscopy has been investigated in the range 1 to 22 keV. Photo- electrons created as a result of the x-ray photo-absorption in a suitable crystal will give rise to phonon production in the crystal-absorber. A matrix of STJs mounted on this absorber can be used essentially as microphones to detect these phonons. The total energy detected by the matrix provides a measure of the absorbed photon's energy while the distribution through the matrix provides the spatial resolution. The use of a suitable crystal absorber should significantly improve the efficiency at higher energies. This is a serious limitation which faces STJs, when used to directly absorb the radiation above a few keV.

Paper Details

Date Published: 1 September 1995
PDF: 10 pages
Proc. SPIE 2518, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI, (1 September 1995); doi: 10.1117/12.218383
Show Author Affiliations
Christian Erd, European Space Agency/ESTEC (Netherlands)
Abel Poelaert, European Space Agency/ESTEC (Netherlands)
Peter Verhoeve, European Space Agency/ESTEC (Netherlands)
Nicola Rando, European Space Agency/ESTEC (Netherlands)
Anthony J. Peacock, European Space Agency/ESTEC (Netherlands)

Published in SPIE Proceedings Vol. 2518:
EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI
Oswald H. W. Siegmund; John V. Vallerga, Editor(s)

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