Development of practical soft X-ray spectrometers

Author

Brammertz, G. ; Verhoeve, P. ; Peacock, A. ; Martin, D. ; Rando, N. ; den Hartog, R. ; Goldie, D.J.

Author_Institution

Div. of Astrophys., Eur. Space Res. & Technol. Centre, Noordwijk, Netherlands

Volume

11

Issue

1

fYear

2001

fDate

3/1/2001 12:00:00 AM

Firstpage

828

Lastpage

831

Abstract

Cryogenic soft X-ray imaging spectrometers are currently being developed for applications in the fields of astronomy and material sciences. In this paper we present experiments on optimized single devices, which show measured energy resolutions of 4.6 eV, 8.1 eV and 20.5 eV at 525 eV, 1.5 keV and 6 keV respectively. These energy resolutions combined with a quantum efficiency of more than 40% in the energy range from 0.5 to 2 keV together with a count rate capability of 15 kHz demonstrate the overall good performance of single Superconducting Tunnel junctions (STJs). Assembling these optimized single devices in a matrix read-out would provide the practical basis for a soft X-ray imaging spectrometer

Keywords

X-ray imaging; X-ray spectrometers; superconducting junction devices; superconductive tunnelling; 0.5 to 6 keV; 15 kHz; 40 percent; count rate; cryogenic soft X-ray imaging spectrometer; design optimization; energy resolution; matrix readout; quantum efficiency; single device; superconducting tunnel junction; Assembly; Energy resolution; Insulation; Josephson junctions; Niobium; Optical imaging; Spectroscopy; Superconducting epitaxial layers; Superconducting films; X-ray imaging;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.919472

Filename

919472