The GaAs electron source: simulations and experiments

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Abstract

In this paper we calculate electron emission from GaAs photocathodes using the Monte Carlo technique. Typical data of energy spread of the electron beam are presented. For photoenergy ranging from 1.6 to 2.1 eV, the calculated longitudinal and transverse energy spreads are 14.4–78 and 4–14.7 meV respectively. Temporal response measurement of GaAs photocathodes has been performed. The preliminary results show that the temporal response is faster than 200 ps.

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