Title :
Diamond current amplifier for spatially-distributed beam generation
Author :
Yater, J.E. ; Shaw, J.L. ; Jensen, K.L. ; Butler, J.E. ; Pate, B.B. ; Feygelson, T.
Author_Institution :
Electron. Sci. & Technol. Div., Naval Res. Lab., Washington, DC, USA
Abstract :
A diamond current amplifier is being developed to provide high-current-density electron beams needed for sheet beam generation. Thin single-crystal CVD diamond films are being grown and optimized with respect to crystal purity, film thickness, and surface quality. Electron emission measurements taken from fabricated amplifiers will be used to characterize and optimize the emission gain, emitted electron energy spread, and spatial uniformity of the emitted beam.
Keywords :
CVD coatings; amplifiers; diamond; electron beams; electron guns; secondary electron emission; thermionic cathodes; C; cold cathode technology; diamond current amplifier; electron emission measurements; electron gun; emission gain; emitted electron energy spread; high-current-density electron beam; secondary emission; sheet beam generation; spatial uniformity; spatially-distributed beam generation; thermionic cathode; thin single-crystal CVD diamond films; Cathodes; Circuits; Current density; Electron beams; Electron emission; Energy measurement; Gain measurement; Impurities; Laboratories; Optical films; current amplifier; diamond; negative electron affinity; secondary emission; sheet electron beam;
Conference_Titel :
Vacuum Electronics Conference, 2009. IVEC '09. IEEE International
Conference_Location :
Rome
Print_ISBN :
978-1-4244-3500-5
Electronic_ISBN :
978-1-4244-3501-2
DOI :
10.1109/IVELEC.2009.5193460
