The spectral resolution of high temperature GaAs photon counting soft X-ray photodiodes

作者：Barnett A M^*; Lees J E; Bassford D J; Ng J S; Tan C H; Babazadeh N; Gomes R B

来源：Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment , 2011, 654(1): 336-339.

DOI：10.1016/j.nima.2011.06.101

• GaAs
• Spectroscopy
• Temperature dependence
• X-ray
• Detector
• AlGaAs

Circular mesa GaAs p(+)-i-n(+) diodes for photon counting soft X-ray spectroscopy have been fabricated and characterised over a temperature range of +80 to -30 degrees C. The spectroscopic performance of the diodes, as measured by the FWHM of the Mn K-alpha X-ray line from an Fe-55 radioisotope, is reported. In addition, we compare the GaAs diodes with previously fabricated and characterised Al0.8Ga0.2As p(+)-i-n(+) diodes of similar geometry.

• 出版日期2011-10-21