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photocathode Definition

photo·cath·ode (fōt′ō kat̸h′ōd′)

noun

a cathode that emits electrons when activated by radiation, as light

photocathode Usage Examples

Converse of object

  • expose: Interactive Flash Tutorial Photomultiplier Tubes Discover how photomultipliers work by amplifying the electrons generated by a photocathode exposed to a photon flux.
  • strike: When light strikes a photocathode inside the tube, an electron is emitted, which accelerates toward the first anode in a multiplier unit.
  • use: We therefore decided to investigate possible MCP efficiency enhancements for beta particles using similar photocathodes.

Converse of subject

generate: Interactive Flash Tutorial Photomultiplier Tubes Discover how photomultipliers work by amplifying the electrons generated by a photocathode exposed to a photon flux.

Modifies a noun

material: X-rays interact with the channel plate glass and electrodes ( and with the associated photocathode material ) via the photoelectric effect.