Proton radiation effects on carrier transport in diamond radiation detectors

AIP Advances
Mengnan ZouErik M Muller

Abstract

Diamond, a highly radiation-resistant material, is considered a nearly ideal material for radiation detection, particularly in high-energy physics. In this study, radiation damage from high-energy proton beams was induced in diamond crystals to determine exposure lifetime in detectors made from this material; the effects were investigated using non-destructive x-ray techniques and through the FLUKA simulation package. Two diamond detectors were irradiated by an 800 MeV proton beam at different fluence rates, and the real-time current response was recorded to observe degradation in the signal over time. It was determined that the proton fluence rate had a significant effect on the device degradation. The detector performance from the irradiated detectors was characterized using x-ray beam-induced current measurements, and the mechanism of proton radiation damage to diamond sensors, especially the radiation effects on carrier transport, was studied. The vacancies generated from proton irradiation were considered the major source of detector degradation by trapping holes and inducing an internal electric field. Simulation results from the FLUKA package revealed an uneven distribution of the radiation-induced vacancies along the be...Continue Reading

References

Oct 27, 2010·Journal of Synchrotron Radiation·Jen BohonJohn Smedley

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Citations

May 27, 2021·Nanotechnology·Vimal Kant PandeyM Meyyappan

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Methods Mentioned

BETA
X-ray
Footprinting

Software Mentioned

FLUKA

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