Long-term performance of doped Ge:Ga photoconductors in the space environment

Tanya L. Lim; Martin J. Burgdorf; Bruce Miles Swinyard; Elisabetta Tommasi; Matthew J. Griffin; Peter E. Clegg

doi:10.1117/12.317321

21 August 1998 Long-term performance of doped Ge:Ga photoconductors in the space environment

Tanya L. Lim, Martin J. Burgdorf, Bruce Miles Swinyard, Elisabetta Tommasi, Matthew J. Griffin, Peter E. Clegg

Proceedings Volume 3354, Infrared Astronomical Instrumentation; (1998) https://doi.org/10.1117/12.317321
Event: Astronomical Telescopes and Instrumentation, 1998, Kona, HI, United States

Abstract

The long wavelength spectrometer on board the ESA IR Space Observatory employs doped geranium photoconductors to perform spectroscopy in the 43 to 197 micrometers waveband. The instrument has been in continuous on orbit operation for over two years - longer than any other experiment in this waveband. Invaluable data have been gathered on the long term performance of a beryllium doped germanium detector and both stressed and unstressed gallium doped germanium detectors in the presence of ionizing radiation in the form of cosmic rays and charged particles trapped in the Earth's magnetic fields. In this paper we report on the in-orbit performance of the detectors and in particular on the long term behavior of the dark current and responsivity.

Citation Download Citation

Tanya L. Lim, Martin J. Burgdorf, Bruce Miles Swinyard, Elisabetta Tommasi, Matthew J. Griffin, and Peter E. Clegg "Long-term performance of doped Ge:Ga photoconductors in the space environment", Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); https://doi.org/10.1117/12.317321

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