ANISOTROPY OF MAGNETIC SUSCEPTIBILITY

Anisotropy of Magnetic Susceptibility (AMS) laboratory (MFK1 Kappabridges, AGICO) used to quantify geometries and intensity of deformation fabrics in rocks. The laboratory is principally employed to determine the modalities of emplacement of plutons, lava flows, dykes and pyroclastic flows.

For information please contact :

Luca Caricchi, Ph: +41 (0)22.379.66.30 Email

ELECTRON PROBE MICRO-ANALYSER

Description equipment

The JEOL JXA-iHP200F hyperprobe is an electron probe micro analyser allowing the quantitative measurement of the chemical composition (all elements from B to U) of solid material at high spatial resolution (1-3 μm) using a Wave Dispersive System (WDS). Elemental mapping can be performed using the WDS system in combination with an Energy Dispersive System (EDS). Analyses are performed in combination with the possibility of sample imaging in secondary electron and back-scattered electron mode at magnification up to 300,000 X. The instrument is equipped with a soft X-ray emission spectrometer (SXES) to measure light elements (e.g. B, O, Cl, F, S) in concentrations down to few tens of parts per million. Additionally, the SXES permits the determination of the oxidation state of Fe. The sample holder accommodates samples in round epoxy mounts (2.54 cm ⌀), standard thin sections (27 mm x 46 mm) but other shapes can be considered. Analyses are performed on surfaces that are polished, flat, clean and carbon coated prior to analysis.

Details

Instrument: JEOL JXA-iHP200F hyperprobe Characteristics:
- Field emission gun (In-lens Shottky Plus FEG)
- 4 WDS spectrometers
- EDS system
- Fast elemental mapping
- SXES detector; detectable energy range: 100-2300 eV; spatial resolution: 250 nm
- Accelerating voltage: 1-30 kV
- Secondary electron and back scattered electron detectors

Samples are analysed under vacuum conditions

For information please contact :

Luca Caricchi (Responsible). Phone: +41 22 37 96 630, Email
Charline Lormand (Lab Manager). Phone: +41 379 66 72, Email

Schedule of the lab
For bookings, users are invited to email the contact person directly.