Physics Commons^™

Study Of Electron Beam Emitted From Nano-Structured Cathode, Anusorn Lueangaramwong

Graduate Research Theses & Dissertations

Over the years, particle accelerators have enabled breakthroughs in fundamental science while also becoming critical tools in medicine, homeland security, and societal applications. High-brightness electron beams are a key to the development of some of these accelerators and especially accelerator-based light sources. Electron emission is the first stage of the accelerator that dictates the ultimate beam brightness. To achieve such beam quality, electron sources--cathodes have been developed for their emission efficiencies. The cathodes with nanostructures on their surfaces have shown promising efficiencies when a laser pulse impinges, or an electric field is applied, on the cathode surface. Alternatively, these nano-patterned …