Share Email Print
cover

Proceedings Paper

Nonequilibrium dynamics in superconducting tunnel junction detectors
Author(s): Lawrence J. Hiller; Simon E. Labov; Carl A. Mears; Matthias A. Frank; Abner F. Bello; Andrew T. Barfknecht
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Superconducting tunnel junctions have the potential to serve as high-resolution, high-efficiency x-ray detectors for astrophysical and industrial applications. When irradiated by X rays, each X ray excites over 106 charge carriers which cause the detector to generate a pulse of current. We present an analysis of pulse shapes from detectors we have constructed and operated. We fit the decay of the current pulse to a simple model that considers two classes of carrier loss. One model considers only the normal recombination of the charge carriers with themselves, the other included additional losses due to recombination sites within the detector medium. We found that both mechanisms must be taken into account. We also found a small variation in pulse shape depending on which layer of the tunnel junction absorbed the X ray. We expect that this analysis will be a useful tool in comparing different detector designs and operating conditions.

Paper Details

Date Published: 16 September 1994
PDF: 11 pages
Proc. SPIE 2280, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy V, (16 September 1994); doi: 10.1117/12.186826
Show Author Affiliations
Lawrence J. Hiller, Lawrence Livermore National Lab. (United States)
Simon E. Labov, Lawrence Livermore National Lab. (United States)
Carl A. Mears, Lawrence Livermore National Lab. (United States)
Matthias A. Frank, Lawrence Livermore National Lab. (United States)
Abner F. Bello, Lawrence Livermore National Lab. (United States)
Andrew T. Barfknecht, Conductus, Inc. (United States)


Published in SPIE Proceedings Vol. 2280:
EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy V
Oswald H. W. Siegmund; John V. Vallerga, Editor(s)

© SPIE. Terms of Use
Back to Top