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1. Field-effect evaporation
The principle of the tomographic atom probe is based on the ionization and field evaporation of atoms on the surface of a material.
The sample, cut in the form of a fine tip, is raised to a high positive potential V of several kilovolts (figure 1 ). The electric field thus generated at the tip is of the form :
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Field-effect evaporation
Bibliography
Patents
Atomic Tomographic Wide Angle Laser Probe with very high mass resolution, BOSTEL Alain , DECONIHOUT Bernard , YAVOR Mickael , RENAUD ludovic, Date de dépôt 12/10/2007 Numero INIST 07 07178
Wide Angle Atomic Tomographic Probe with evaporation assisted by a "white" femtosecond laser pulse, DECONIHOUT Bernard, VELLA Angela, Francois Vurpillot, BREVET INTERNATIONAL n WO/2010/000574 Application number int:...
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