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All 0.5 mm and 1 mm devices were found to be fully functional at normal operating conditions and at room temperature for Protons, Gamma Rays, 1 GeV/n Helium, and 1 GeV/n Iron. Only one quadrant of a 2 mm InGaAs Quad had hard failure due to 1 GeV/n Helium Ions; otherwise it too survived all other radiation tests. Detailed test results follow in the manuscript including recommendations for future space flights. These radiation test results, combined with the earlier successful mechanical shock and vibration testing mean these devices have passed preliminary testing for space qualification. |
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Photodiodes
Ions
Indium gallium arsenide
Signal to noise ratio
Gamma radiation
Iron
Capacitance
