Detector arrays for photometric measurements at soft X-ray, ultraviolet and visible wavelengths

Details Detector arrays for photometric measurements at soft X-ray, ultraviolet and visible wavelengths Detector arrays for photometric measurements at soft X-ray, ultraviolet and visible wavelengths

Jan 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979spie..183..169t&link_type=abstract

In: Space optics; Proceedings of the Seminar, Huntsville, Ala., May 22-24, 1979. (A80-17432 05-89) Bellingham, Wash., Society of

Astronomy and Astrophysics

Astronomy

6

Astronomical Photometry, Radiation Detectors, Spaceborne Telescopes, Ultraviolet Photometry, Visual Photometry, X Ray Astronomy, Anodes, Arrays, Block Diagrams, Design Analysis, Ground Stations, Photocathodes, Photoelectric Effect, Power Gain, Spectrometers

Scientific paper

The construction and modes of operation of the Multi-Anode Microchannel Array (MAMA) detectors are described, and the designs of spectrometers utilizing them are outlined. MAMA consists of a curved microchannel array plate, an opaque photocathode (peak quantum efficiency of 19% at 1216 A), and a multi-anode (either discrete- or coincidence-anode) readout array. Designed for use in instruments on spaceborne telescopes, MAMA can be operated in a windowless configuration in extreme-ultraviolet and soft X-ray wavelengths, or in a sealed configuration at UV and visible wavelengths. Advantages of MAMA include low applied potential (less than 3.0 kV), high gain (greater than 10 to the 6th electrons/pulse), low sensitivity to high-energy charged particles, and immunity to external magnetic fields of less than 500 Gauss

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