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High ion-beam induced electron yields from polycrystalline diamond |
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| Authors: | D I Hoxley D N Jamieson S Prawer V Richter R Kalish |
| Affiliation: | a Micro-Analytical Research Centre, School of Physics, University of Melbourne, Parkville, Vic. 3010, Australia b Physics Department and Solid State Institute, Technion-Israel Institute of Technology, Haifa 3200, Israel |
| Abstract: | Extraordinarily high ion-beam induced electron yields are seen from polycrystalline diamond surfaces for high energy H+, He+ and Ar+ ions. This is attributed to the negative electron affinity of the diamond surface. However, the yield decays rapidly with dose, limiting the potential applications. The mechanism for decay is suggested to be electron-stimulated desorption of surface hydrogen, which removes the negative electron affinity responsible for high yields. |
| Keywords: | Diamond Electron emission Ion-beams |
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