Room: 1213
Lab phone: +41 21 692 43 25
Contact person: Dr. Martin Robyr (+41 21 692 44 41)
Head: Prof. Othmar Müntener, Prof. Pierre Lanari
An electron probe micro-analyzer (EPMA) is a microbeam instrument used primarily for the in situ non-destructive chemical analysis of minute solid samples. It is fundamentally the same as an Scanning Electron Microscopy (SEM), with the added capability of chemical analysis. The primary importance of an EPMA is the ability to acquire precise, quantitative elemental analyses at very small "spot" sizes (as little as 1-2 microns). The spatial scale of analysis makes it possible to analyze geological materials in situ and to resolve complex chemical variation within single grains.
JEOL JXA-8530F HyperProbe
The JEOL JXA-8530F HyperProbe is equipped with a Schottky field emission electron gun for in-situ quantitative chemical analysis at high spatial resolution (<1 μm). Analyses are carried out using five WDS spectrometers fitted with LIF, PET, TAP, LDE1 and LDE2 crystals, including seven large crystals (3 TAPL, 3 PETL and 1 LDE1L) for maximum sensitivity. All elements from B to U can be analysed. The instrument is also equipped with an SDD-EDX detector (spectral resolution of 129eV on Mn) and a panchromatic CL detector.
The lab equipment is completed by a cross-sectional ion polisher for optimum preparation of the sample surfaces.
Schedule:
. Bookings: Martin Robyr (+41 21 692 44 41)
