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Proceedings Paper

Long-term performance of doped Ge:Ga photoconductors in the space environment
Author(s): Tanya L. Lim; Martin J. Burgdorf; Bruce Miles Swinyard; Elisabetta Tommasi; Matthew J. Griffin; Peter E. Clegg
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Paper 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.

Paper Details

Date Published: 21 August 1998
PDF: 10 pages
Proc. SPIE 3354, Infrared Astronomical Instrumentation, (21 August 1998); doi: 10.1117/12.317321
Show Author Affiliations
Tanya L. Lim, ISO Science Operations Ctr. (Spain)
Univ. of London (United Kingdom)
Martin J. Burgdorf, ISO Science Operations Ctr. (Spain)
Bruce Miles Swinyard, Rutherford Appleton Lab. (United Kingdom)
Elisabetta Tommasi, ISO Science Operations Ctr. (Spain)
Imperial College of Science, Technology and Medicine (United Kingdom)
Matthew J. Griffin, Univ. of London (United Kingdom)
Peter E. Clegg, Univ. of London (United Kingdom)


Published in SPIE Proceedings Vol. 3354:
Infrared Astronomical Instrumentation
Albert M. Fowler, Editor(s)

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