M. Legros et al., MICROCALORIMETERS FOR BROAD-BAND HIGH-RESOLUTION X-RAY SPECTRAL-ANALYSIS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 345(3), 1994, pp. 492-495
A large area microcalorimeter with 95% quantum efficiency at 6 keV has
been developed. When fully illuminated, it produces X-ray spectra bet
ween 0.5 and 7 keV with an energy resolution of 23 eV. On a smaller, b
ut similar detector, we measure 18 eV. The resolution is obtained at i
nput count rates of 10-50 Hz in real-time with analog pulse processing
and thermal pile-up rejection. The detector is incorporated into a co
mpact and portable cryogenic refrigerator system that is ready for use
as a tool for analytical spectroscopy.