Noise in GaAs detectors after irradiation

D.G. Marder,Th. Eich,N. Evans, R. Geppert, R. Göppert,R. Irsigler,J. Ludwig,M. Rogalla, K. Runge,Th. Schmid

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment（1997）

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摘要

The effects of neutron and proton irradiation on the noise of detectors made from semi-insulating GaAs have been investigated. Using spectral noise density and equivalent noise-charge measurements, a decrease of shot noise with increasing particle fluence was found. A suppression of noise due to a space-charge effect is postulated and a correlation is shown with measured space-charge density.

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关键词

shot noise,space charge

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