Investigation of Laser-cleaning Process on Lead Photocathodes
نویسندگان
چکیده
To verify the process of laser-cleaning on metal cathodes we performed a combined photoemission (PE) and scanning electron microscope (SEM) study. We followed the laser-cleaning procedure on thin Lead films arc-deposited on Mo-substrates by means of photoemission in the photon energy range of 16 – 140 eV and determined the surface roughness before and after laser irradiationwith whitelight-interferometry. After the cleaning procedure the morphology of the samples was as well analyzed by means of SEM. The aim of the performed experiment was to find an optimal cleaning procedure for Lead cathodes within a sc rf photoelectron injector and study its influence on the electron emission from the Lead films.
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