Title of article :
AlGaAs diodes for X-ray spectroscopy
Author/Authors :
Lees، نويسنده , , J.E. and Bassford، نويسنده , , D.J. and Ng، نويسنده , , J.S. and Tan، نويسنده , , C.H. and David، نويسنده , , J.P.R.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2008
Abstract :
Al0.8Ga0.2As p+–p−–n+ diodes with low reverse leakage currents (<10 nA) were evaluated as room temperature (23 °C), soft X-ray photon-counting detectors. X-ray spectra from a 55Fe radioactive source show these diodes can be used for spectroscopy with promising energy resolution of 1.47 keV FWHM at 5.9 keV. At elevated reverse bias levels (>20 V), we observed avalanche multiplication which, while improving the signal-to-noise ratio, degraded the spectroscopic performance.
Keywords :
x-ray detection , AlGaAs , avalanche multiplication
Journal title :
Nuclear Instruments and Methods in Physics Research Section A
Journal title :
Nuclear Instruments and Methods in Physics Research Section A
