Absolute detection efficiencies of microchannel plates for 0. 1--2. 3 keV electrons and 2. 1--4. 4 keV Mg ions

Journal Article · Sat Mar 01 04:00:00 EST 1986 · Rev. Sci. Instrum.; (United States)

DOI:https://doi.org/10.1063/1.1138944· OSTI ID:6188601

Mueller, A; Djuric, N; Dunn, G H; Belic, D S

The absolute detection efficiencies of detectors consisting of two microchannel plates (MCP) in a chevron arrangement, were experimentally determined for 0.1--2.3-keV electrons and 2.1--4.4-keV Mg ions. Both detectors tested included a grid with 92.5% transmission in front of the first MCP. For the measurements, the observed detector count rates were compared to the corresponding particle currents collected in a Faraday cup and measured with a vibrating reed electrometer. The electron detection efficiency of the MCP detector, including the grid, decreases from 0.82 at 0.1 keV to 0.65 at 2.3 keV for electrons incident normal to the surface. The Mg ion detection efficiency for the same arrangement, but with 43 incidence angle, increases from 0.49 at 2.1 keV to 0.81 at 4.4 keV.

• Research Organization: Joint Institute for Laboratory Astrophysics, University of Colorado and National Bureau of Standards, Boulder, Colorado 80309-0440
• OSTI ID: 6188601
• Journal Information: Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 57:3; ISSN RSINA
• Country of Publication: United States
• Language: English

Related Subjects

440101* -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
CHARGED PARTICLE DETECTION
CHARGED PARTICLES
DATA
DETECTION
EFFICIENCY
ELECTRON DETECTION
ENERGY RANGE
EV RANGE
EV RANGE 100-1000
EXPERIMENTAL DATA
FABRICATION
INFORMATION
ION DETECTION
IONS
KEV RANGE
KEV RANGE 01-10
MAGNESIUM IONS
MEASURING INSTRUMENTS
NUMERICAL DATA
POSITION SENSITIVE DETECTORS
RADIATION DETECTION
RADIATION DETECTORS