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1 September 1995 Application of crystal absorbers coupled to superconducting tunnel junctions for the measurement of x rays
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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.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Christian Erd, Abel Poelaert, Peter Verhoeve, Nicola Rando, and Anthony J. Peacock "Application of crystal absorbers coupled to superconducting tunnel junctions for the measurement of x rays", Proc. SPIE 2518, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI, (1 September 1995); https://doi.org/10.1117/12.218383
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