J Oberheide et al 1997 Meas. Sci. Technol. 8 351 doi:10.1088/0957-0233/8/4/001
New results on the absolute ion detection efficiencies of a microchannel plate
J Oberheide, P Wilhelms and M Zimmer
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Absolute single-particle detection efficiencies and pulse height distributions of a cascaded microchannel plate (MCP) detector are reported for the ions 
, 
, 
, 
and 
in the impact energy range 0 - 4.75 keV. The detection efficiencies have been obtained using the photoelectron - photoion coincidence (PEPICO) technique which allows the determination of detection efficiencies without knowledge of the absolute ionization rate. The mean gain is found to increase with increasing ion impact energy and decreasing ion mass. Depending on the ion mass, the absolute detection efficiencies saturate above 2.5 keV and reach about 63%.
- PACS
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85.60.Ha Photomultipliers; phototubes and photocathodes
82.50.Hp Processes caused by visible and UV light
07.07.Df Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing
- Subjects
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Instrumentation and measurement
- Dates
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Issue 4 (April 1997)
Received 30 December 1996, accepted for publication 11 February 1997
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New results on the absolute ion detection efficiencies of a microchannel plate
J Oberheide et al 1997 Meas. Sci. Technol. 8 351
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