Close-packed arrays of transition-edge x-ray microcalorimeters with high spectral resolution at 5.9 keV

N. Iyomoto, S. R. Bandler, R. P. Brekosky, A. D. Brown, J. A. Chervenak, F. M. Finkbeiner, R. L. Kelley, C. A. Kilbourne, F. S. Porter, J. E. Sadleir, S. J. Smith, E. Figueroa-Feliciano

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Abstract

We present measurements of high fill-factor arrays of superconducting transition-edge x-ray microcalorimeters designed to provide rapid thermalization of the x-ray energy. We designed an x-ray absorber that is cantilevered over the sensitive part of the thermometer itself, making contact only at normal-metal features. With absorbers made of electroplated gold, we have demonstrated an energy resolution between 2.4 and 3.1 eV at 5.9 keV on 13 separate pixels. We have determined the thermal and electrical parameters of the devices throughout the superconducting transition and, using these parameters, have modeled all aspects of the detector performance.

Original languageEnglish
Article number013508
JournalApplied Physics Letters
Volume92
Issue number1
DOIs
Publication statusPublished - Jan 16 2008
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

Cite this

Iyomoto, N., Bandler, S. R., Brekosky, R. P., Brown, A. D., Chervenak, J. A., Finkbeiner, F. M., ... Figueroa-Feliciano, E. (2008). Close-packed arrays of transition-edge x-ray microcalorimeters with high spectral resolution at 5.9 keV. Applied Physics Letters, 92(1), [013508]. https://doi.org/10.1063/1.2830665