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Preparation of micro-samples
Laboratory equipment is designed for : manual mineral separation ; epoxy coating ; manual preparation of polished epoxy frames ; carbon coating for EPMA and electron microscope ; microthermometric study of fluid inclusions.
The laboratory has an electron microprobe for the chemical analysis of rocks. To be analyzed, samples must be solid and have a perfectly flat surface. The laboratory is therefore equipped with polishers and a vacuum carbon metalliser to make the samples usable for the microprobe.
Equipment for sample preparation for electron microprobe
| Framework of use | Devices used in the framework of projects at ISTerre or in collaboration with other laboratories of the Grenoble Observatory. | |
| Description of the equipment | Polishing machine MetaServ 250 (Buehler) | Allows to obtain solid samples with a perfectly flat surface. Ideally, the surface should be "smoothed mirror". |
| Cast N’VAC | Vacuum coating system with integrated pump. | |
| Q150TE vacuum carbon evaporator turbo pump, Quorum | Allows the surface of the sample to be electrically conductive in order to avoid charging by the electron beam : the samples are coated with carbon in a vacuum by passing an electric current through high-purity graphite electrodes. The carbon evaporates at the point of contact of the two electrodes and settles on the surface of the sample. | |
| Responsible for the tool
Associate team |
Valentina.Batanova univ-grenoble-alpes.fr Tel : 04 76 63 52 23 ; 04 76 51 40 65 | |
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