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Hitachi

Fig. 1 Double-slit experiment with single electrons
Fig. 1 Double-slit experiment with single electrons

Electrons emitted from a source are sent to the electron biprism. The electrons are attracted towards the central filament and overlap in the electrons arrived lower detector plane at the detector are displayed as bright spots on the monitor. Even when the electron arrival rate is as low as 10 electrons/sec, the accumulation of single electrons forms a biprism interference pattern.