Open AccessClose-packed arrays of transition-edge x-ray microcalorimeters with high spectral resolution at 5.9keV
Author(s) -
Naoko Iyomoto,
S. R. Bandler,
Regis P. Brekosky,
Ari-David Brown,
J. A. Chervenak,
F. M. Finkbeiner,
Richard L. Kelley,
C. A. Kilbourne,
F. S. Porter,
J. E. Sadleir,
S. J. Smith,
E. FigueroaFeliciano
Publication year - 2008
Publication title -
applied physics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 442
eISSN - 1077-3118
pISSN - 0003-6951
DOI - 10.1063/1.2830665
Subject(s) - x ray detector , superconductivity , materials science , detector , thermometer , transition edge sensor , electroplating , resolution (logic) , optoelectronics , transition metal , enhanced data rates for gsm evolution , thermalisation , optics , condensed matter physics , physics , atomic physics , bolometer , nanotechnology , chemistry , biochemistry , layer (electronics) , quantum mechanics , artificial intelligence , computer science , catalysis , telecommunications
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.
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