NIS tunnel junction as an x-ray photon sensor

Fatma Azgui; Carl A. Mears; Simon E. Labov; Matthias Frank; Bernard Sadoulet; E. Brunet; Lawrence J. Hiller; Mark A. Lindeman; Harrie Netel

NIS tunnel junction as an x-ray photon sensor

Fatma Azgui, Carl A. Mears, Simon E. Labov, Matthias Frank, Bernard Sadoulet, E. Brunet, Lawrence J. Hiller, Mark A. Lindeman, Harrie Netel

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

This work presents the first results of our development of normal-insulating-superconducting tunnel junctions used as energy dispersive detectors for low energy particles. The device described here is a Ag/Al ₂O ₃/Al tunnel junction of area 1.5 multiplied by 10 ⁴ micrometer squared with thicknesses of 200 nm for the normal Ag strip and 100 nm for the superconducting Al film. Two different high-speed SQUID systems manufactured by quantum magnetics and HYPRES, respectively, were used for the readout of this device. At 80 mK bath temperature we obtained an energy resolution DeltaE _FWHM equals 250 eV for 5.89 keV x rays absorbed directly in the normal metal. This energy resolution appears to be limited in large part by the observed strong position dependence of the device response.

Original language	English (US)
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Editors	Oswald H. Siegmund, John V. Vallerga
Pages	286-291
Number of pages	6
Volume	2518
State	Published - Dec 1 1995
Externally published	Yes
Event	EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI - San Diego, CA, USA Duration: Jul 12 1995 → Jul 14 1995

Other

Other	EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI
City	San Diego, CA, USA
Period	7/12/95 → 7/14/95

ASJC Scopus subject areas

Electrical and Electronic Engineering
Condensed Matter Physics

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NIS tunnel junction as an x-ray photon sensor. / Azgui, Fatma; Mears, Carl A.; Labov, Simon E.; Frank, Matthias; Sadoulet, Bernard; Brunet, E.; Hiller, Lawrence J.; Lindeman, Mark A.; Netel, Harrie.

Proceedings of SPIE - The International Society for Optical Engineering. ed. / Oswald H. Siegmund; John V. Vallerga. Vol. 2518 1995. p. 286-291.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Azgui, F, Mears, CA, Labov, SE, Frank, M, Sadoulet, B, Brunet, E, Hiller, LJ, Lindeman, MA & Netel, H 1995, NIS tunnel junction as an x-ray photon sensor. in OH Siegmund & JV Vallerga (eds), Proceedings of SPIE - The International Society for Optical Engineering. vol. 2518, pp. 286-291, EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy VI, San Diego, CA, USA, 7/12/95.

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title = "NIS tunnel junction as an x-ray photon sensor",

abstract = "This work presents the first results of our development of normal-insulating-superconducting tunnel junctions used as energy dispersive detectors for low energy particles. The device described here is a Ag/Al 2O 3/Al tunnel junction of area 1.5 multiplied by 10 4 micrometer squared with thicknesses of 200 nm for the normal Ag strip and 100 nm for the superconducting Al film. Two different high-speed SQUID systems manufactured by quantum magnetics and HYPRES, respectively, were used for the readout of this device. At 80 mK bath temperature we obtained an energy resolution DeltaE FWHM equals 250 eV for 5.89 keV x rays absorbed directly in the normal metal. This energy resolution appears to be limited in large part by the observed strong position dependence of the device response.",

author = "Fatma Azgui and Mears, {Carl A.} and Labov, {Simon E.} and Matthias Frank and Bernard Sadoulet and E. Brunet and Hiller, {Lawrence J.} and Lindeman, {Mark A.} and Harrie Netel",

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AU - Azgui, Fatma

AU - Mears, Carl A.

AU - Labov, Simon E.

AU - Frank, Matthias

AU - Sadoulet, Bernard

AU - Brunet, E.

AU - Hiller, Lawrence J.

AU - Lindeman, Mark A.

AU - Netel, Harrie

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N2 - This work presents the first results of our development of normal-insulating-superconducting tunnel junctions used as energy dispersive detectors for low energy particles. The device described here is a Ag/Al 2O 3/Al tunnel junction of area 1.5 multiplied by 10 4 micrometer squared with thicknesses of 200 nm for the normal Ag strip and 100 nm for the superconducting Al film. Two different high-speed SQUID systems manufactured by quantum magnetics and HYPRES, respectively, were used for the readout of this device. At 80 mK bath temperature we obtained an energy resolution DeltaE FWHM equals 250 eV for 5.89 keV x rays absorbed directly in the normal metal. This energy resolution appears to be limited in large part by the observed strong position dependence of the device response.

AB - This work presents the first results of our development of normal-insulating-superconducting tunnel junctions used as energy dispersive detectors for low energy particles. The device described here is a Ag/Al 2O 3/Al tunnel junction of area 1.5 multiplied by 10 4 micrometer squared with thicknesses of 200 nm for the normal Ag strip and 100 nm for the superconducting Al film. Two different high-speed SQUID systems manufactured by quantum magnetics and HYPRES, respectively, were used for the readout of this device. At 80 mK bath temperature we obtained an energy resolution DeltaE FWHM equals 250 eV for 5.89 keV x rays absorbed directly in the normal metal. This energy resolution appears to be limited in large part by the observed strong position dependence of the device response.

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