3. Evaporation mode and mass resolution

Good precision on the time of flight and on the energy acquired by the ion gives an excellent measurement of the mass ratio m to charge n of the emitted ion. The important thing, of course, is to separate two peaks of close mass.

Example

in an FeMn alloy, ${Mn}_{55}^{2 +}$ (M/n = 27.47) is detected between two Fe isotopes ${Fe}_{54}^{2 +} = 26,97, {Fe}_{56}^{2 +} = 27,97)$ ...

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Evaporation mode and mass resolution

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page Chemical identification of ions

Ion impact localization and image reconstruction

Bibliography

(1) - BRANDON (D.G.) - On field evaporation. - Philosophical Magazine, 14, p. 803-820 (1966).
(2) - TSONG (T.T.) - Field ion image formation. - Surface Science, 70, p. 211-233 (1978).
(3)...

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:...