Initial development of a superconducting crystal x-ray and gamma-ray spectrometer

Harrie Netel, Matthias Frank, Simon E. Labov, Geoffrey H. Campbell, Carl A. Mears, Lawrence J. Hiller, Mark A. Lindeman, E. Brunet

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Superconducting tunnel junctions can be used as high resolution x-ray and gamma-ray detectors. Until recently, most results were from detectors that consisted of niobium and aluminum thin films deposited on insulating substrates. Typically Nb films with thicknesses of several hundred nanometers are used as absorbers. These thin film devices inherently suffer from poor quantum efficiency. To increase this efficiency a foil or a single crystal, which can be thicker and can have a larger area than the thin films, can be used as the superconducting absorber. We are working on using ultra-pure, high-Z, superconducting crystals as the x-ray and gamma-ray absorbers. We are planning to fabricate a detector which uses a 10 micrometer-thick Ta crystal as the absorber, which will have a quantum efficiency of greater than 99% at 6 keV. As a test of the different processing steps we fabricated Al/AlOx/Al superconducting tunnel junctions on top of a 30 micrometer thick Al foil. In this paper several of the fabrication issues involved are presented as well as the first results from the Al foil test devices.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsOswald H. Siegmund, John V. Vallerga
Pages244-248
Number of pages5
Volume2518
StatePublished - Dec 1 1995
Externally publishedYes
EventEUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI - San Diego, CA, USA
Duration: Jul 12 1995Jul 14 1995

Other

OtherEUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI
CitySan Diego, CA, USA
Period7/12/957/14/95

Fingerprint

Gamma ray spectrometers
gamma ray spectrometers
Metal foil
absorbers
Tunnel junctions
Detectors
Quantum efficiency
X rays
foils
Gamma rays
Crystals
tunnel junctions
Thin film devices
crystals
micrometers
quantum efficiency
Thin films
detectors
x rays
thin films

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Netel, H., Frank, M., Labov, S. E., Campbell, G. H., Mears, C. A., Hiller, L. J., ... Brunet, E. (1995). Initial development of a superconducting crystal x-ray and gamma-ray spectrometer. In O. H. Siegmund, & J. V. Vallerga (Eds.), Proceedings of SPIE - The International Society for Optical Engineering (Vol. 2518, pp. 244-248)

Initial development of a superconducting crystal x-ray and gamma-ray spectrometer. / Netel, Harrie; Frank, Matthias; Labov, Simon E.; Campbell, Geoffrey H.; Mears, Carl A.; Hiller, Lawrence J.; Lindeman, Mark A.; Brunet, E.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / Oswald H. Siegmund; John V. Vallerga. Vol. 2518 1995. p. 244-248.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Netel, H, Frank, M, Labov, SE, Campbell, GH, Mears, CA, Hiller, LJ, Lindeman, MA & Brunet, E 1995, Initial development of a superconducting crystal x-ray and gamma-ray spectrometer. in OH Siegmund & JV Vallerga (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 2518, pp. 244-248, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI, San Diego, CA, USA, 7/12/95.
Netel H, Frank M, Labov SE, Campbell GH, Mears CA, Hiller LJ et al. Initial development of a superconducting crystal x-ray and gamma-ray spectrometer. In Siegmund OH, Vallerga JV, editors, Proceedings of SPIE - The International Society for Optical Engineering. Vol. 2518. 1995. p. 244-248
Netel, Harrie ; Frank, Matthias ; Labov, Simon E. ; Campbell, Geoffrey H. ; Mears, Carl A. ; Hiller, Lawrence J. ; Lindeman, Mark A. ; Brunet, E. / Initial development of a superconducting crystal x-ray and gamma-ray spectrometer. Proceedings of SPIE - The International Society for Optical Engineering. editor / Oswald H. Siegmund ; John V. Vallerga. Vol. 2518 1995. pp. 244-248
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