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Proceedings Paper

X-ray detection with an Nb-based junction and investigation of series-junction detectors
Author(s): Masahiko Kurakado; Toru Takahashi; Atsuki Matsumura; Shin Ito; Rintaro Katano; Yasuhito Isozumi
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Paper Abstract

Two topics on our recent investigations into superconducting tunnel junction (STJ) detectors are discussed: the single Nb/Al-AlOx/Al/Nb junction for high-resolution x-ray detection and the series-connected superconducting tunnel junction detectors (SCSDs) with high detection efficiency. Using a single Nb/Al-AlOx/Al/Nb junction with rather large area of 178 X 178 micrometers 2, we obtained a high energy resolution of 88 eV for 5.9-keV x- rays. The signal-to-noise ratio of the SCSD is discussed from a simple theoretical formulation of electronics, showing that the series-connected STJs can be developed as a nuclear radiation detector both with high energy resolution and high efficiency. Recent experimental results of our SCSD are also given in this paper.

Paper Details

Date Published: 8 October 1992
PDF: 12 pages
Proc. SPIE 1743, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy III, (8 October 1992); doi: 10.1117/12.130696
Show Author Affiliations
Masahiko Kurakado, Nippon Steel Corp. (Japan)
Toru Takahashi, Nippon Steel Corp. (Japan)
Atsuki Matsumura, Nippon Steel Corp. (Japan)
Shin Ito, Kyoto Univ. (Japan)
Rintaro Katano, Kyoto Univ. (Japan)
Yasuhito Isozumi, Kyoto Univ. (Japan)


Published in SPIE Proceedings Vol. 1743:
EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy III
Oswald H. W. Siegmund, Editor(s)

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