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Title: Energy deficit of pulsed-laser field-ionized and field-emitted ions from non-metallic nano-tips

The energy deficit of pulsed-laser field-evaporated ions and field-ionized atoms of an inert gas from the surface of a non-metallic nano-metric tip is reported as a function of the laser intensity, ion current, and temperature. A new model is proposed to explain these results, taking into account the resistive properties of non-metallic nano-tips. A good agreement between the theoretical predictions and the experimental results is obtained for all parameters investigated experimentally. This model is also used to discuss the evaporation behavior of oxides analyzed in laser-assisted atom probe tomography. New insight into the contribution of the electrostatic field and the laser illumination on the evaporation process of non-metallic materials is given.
Authors:
; ; ; ; ; ; ;  [1]
  1. Groupe de Physique des Matériaux UMR CNRS 6634, Normandie Université, Université-INSA de Rouen, Avenue de l'Université BP 12, 76801 Saint Etienne du Rouvray (France)
Publication Date:
OSTI Identifier:
22304521
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 20; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ATOMS; COMPUTERIZED SIMULATION; ELECTRIC CONDUCTIVITY; EMISSION; EVAPORATION; FORECASTING; ILLUMINANCE; IONIZATION; IONS; LASER RADIATION; NANOSTRUCTURES; OXIDES; RADIANT FLUX DENSITY; SURFACES; TEMPERATURE DEPENDENCE; TOMOGRAPHY