Identification of phases in gas-atomised droplets by combination of neutron and X-ray diffraction techniques with atom probe tomography.

Powders of Al(68.5)Ni(31.5) alloy have been produced by gas atomisation and sieved in different grain size families.

Effects of incidence angles of ions on the mass resolution of an energy compensated 3D atom probe.

We have used a first-order reflectron lens in an optical tomographic atom probe in order to improve the mass resolution. Calculations have been performed to determine the effect of second-order errors in ion energy and incidence angle on the performance of the lens. By applying a correction procedure based on the results of these calculations, we have been able to improve experimental mass resolution by 30%.