Title :
Single photon imaging X-ray spectrometers
Author :
Segall, K. ; Wilson, C.M. ; Li, L. ; Davies, A.K. ; Lathrop, R. ; Gaidis, M.C. ; Prober, D.E. ; Szymkowiak, A.E. ; Moseley, S.H.
Author_Institution :
Dept. of Appl. Phys., Yale Univ., New Haven, CT, USA
fDate :
6/1/1999 12:00:00 AM
Abstract :
We have developed superconducting, single-photon imaging X-ray detectors with an energy resolution of 26 eV FWHM at 6 keV and a spatial resolution of 0.5 /spl mu/m over an effective area of 18 /spl mu/m/spl times/100 /spl mu/m. The energy resolution is among the best reported for this kind of detector and is within a factor of /spl ap/4 of its theoretical limit. The calculated absorption efficiency of the detector is 28%. Scaling to larger areas and higher quantum efficiency appear possible. We discuss the device design and readout along with possible sources of resolution broadening.
Keywords :
X-ray detection; X-ray spectrometers; superconducting junction devices; superconducting particle detectors; absorption efficiency; device design; energy resolution; high quantum efficiency; readout; resolution broadening; single photon imaging X-ray spectrometers; spatial resolution; superconducting X-ray detectors; tunnel junction detectors; Energy resolution; Geometry; Josephson junctions; NASA; Optical imaging; Spatial resolution; Spectroscopy; Superconducting films; X-ray detectors; X-ray imaging;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
