Total dose and proton damage in optocouplers

Radiation damage from gamma rays and protons is investigated for two types of optocouplers with different physical configurations. Far more damage occurs from protons because of displacement damage, which reduces the photoresponse of the phototransistor and causes severe degradation in LED light out...

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Bibliographic Details
Published in:IEEE transactions on nuclear science 1996-12, Vol.43 (6), p.3167-3173
Main Authors: Rax, B.G., Lee, C.I., Johnston, A.H., Barnes, C.E.
Format: Article
Language:English
Subjects:
Degradation
Gamma rays
Laboratories
Light emitting diodes
Optical coupling
Optical sensors
Optical surface waves
Phototransistors
Propulsion
Protons
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Summary:Radiation damage from gamma rays and protons is investigated for two types of optocouplers with different physical configurations. Far more damage occurs from protons because of displacement damage, which reduces the photoresponse of the phototransistor and causes severe degradation in LED light output for one of the two device types. The other device type was far more resistant to radiation, primarily because it used a shorter wavelength LED that was relatively unaffected by protons.
ISSN:0018-9499
1558-1578
DOI:10.1109/23.556921