Pulse-laser-irradiated high-brightness photoelectron source
- 29 June 1987
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 50 (26) , 1867-1869
- https://doi.org/10.1063/1.97720
Abstract
Linac-driven free-electron lasers, new powerful synchrotron radiation sources, and advanced high-power microwave devices will require very bright emitters of electrons to operate efficiently. By irradiating a Cs3Sb photocathode with a frequency-doubled, Nd:glass laser, we have obtained a very high normalized electron beam brightness of over 1011 A/m2/rad2. Peak currents emitted from the 1 cm2 surface in 50 ns pulses ranged up to 80 A. Measured normalized emittances were between 5 and 9 π mm mrad.Keywords
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