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|Title:||AlGaAs diodes for X-ray spectroscopy.|
|Authors:||Lees, J. E.|
Bassford, D. J.
Ng, J. S.
Tan, C. H.
David, J. P. R.
|Citation:||Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2008, 594 (2), pp. 202-205.|
|Abstract:||Al0.8Ga0.2As p+-p--n+ diodes with low reverse leakage currents (<10nA) were evaluated as room temperature (23ºC), 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 (>20V) we observed avalanche multiplication which, while improving the signal-to-noise ratio, degraded the spectroscopic performance.|
|Rights:||This is the author's final draft of the paper published as Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2008, 594 (2), pp. 202-205. The final published version is available at http://www.sciencedirect.com/science/journal/01689002, Doi: 10.1016/j.nima.2008.06.038.|
|Appears in Collections:||Published Articles, Dept. of Physics and Astronomy|
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