GaAs detectors for hard X-ray astronomy

Details GaAs detectors for hard X-ray astronomy GaAs detectors for hard X-ray astronomy

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997nuphs..54..368d&link_type=abstract

Nuclear Physics B Proceedings Supplements, v. 54, p. 368-371.

Physics

Nuclear Physics

Scientific paper

Particle detectors fabricated from bulk semi-insulating (SI) GaAs of 4 different suppliers are investigated. I-V, C-V characteristics, material transport parameters as well as inhomogeneities are studied and correlated with detector performances. It was observed that the charge collection efficiency and the energy resolution of detectors tested by 5.48 MeV α-particles and 122 keV X-rays is strongly affected by physical properties of the base material. It is concluded that detectors fabricated from the graded bulk SI GaAs material are suitable for application in hard X-ray astronomy.

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