MCP: Detection Efficiency of different Radiations

The detection efficiency of different radiations for MCP depends on the type and the energy of the radiation, as well as the geometry and the material of the MCP. The detection efficiency is the ratio of the number of output pulses to the number of incident particles or photons.
Some examples of the detection efficiency of different radiations for MCP are:

• Electrons: The detection efficiency of MCP for electrons ranges from 20% to 30% for energies below 100 keV, and decreases to 10% for energies above 100 keV. The detection efficiency also depends on the angle of incidence, the bias angle, and the emissive coating of the MCP.
• Ions: The detection efficiency of MCP for ions ranges from 50% to 90% for energies below 10 keV and decreases to 10% for energies above 100 keV. The detection efficiency also depends on the charge state, the mass, and the velocity of the ions, as well as the channel diameter and the resistance coating of the MCP.
• Photons: The detection efficiency of MCP for photons ranges from 10% to 20% for ultraviolet wavelengths and decreases to 0.1% for X-ray and gamma-ray energies. The detection efficiency also depends on the quantum efficiency of the photocathode, the open area ratio, and the secondary emission coefficient of the MCP.