Title :
Cobalt60 and proton radiation effects on large format, 2-D, CCD arrays for an Earth imaging application
Author_Institution :
Sira Ltd., Chislehurst, UK
fDate :
12/1/1992 12:00:00 AM
Abstract :
Cobalt60 and 10-MeV proton irradiations have been carried out on n-buried channel frame transfer CCDs (charge coupled devices) in order to study changes in charge transfer efficiency (CTE) and dark current for room temperature, 1 μs/pixel, readout conditions. Bias dependence and post-annealing effects were observed for ionization damage. CTE effects are explained in terms of capture and emission from deep level traps. Temporal instabilities (random telegraph signals) were observed in the proton-induced dark current
Keywords :
CCD image sensors; deep levels; gamma-ray effects; geophysical equipment; proton effects; 10 MeV; Earth imaging application; charge transfer efficiency; dark current; deep level traps; gamma irradiation; ionization damage; large format 2D CCD arrays; n-buried channel frame transfer CCDs; post-annealing effects; proton radiation effects; random telegraph signals; room temperature; spaceborne instrumentation; temporal instabilities; Charge coupled devices; Clocks; Dark current; Earth; Instruments; Ionization; Pixel; Proton radiation effects; Temperature; Testing;
Journal_Title :
Nuclear Science, IEEE Transactions on
