IMS 1280 belongs to a new generation of SIMS instruments specifically designed
to perform direct in situ analyses in selected µm-size areas of complex
A large radius magnetic sector ensuring ultimate performance for isotopic
analysis of trace elements
1280 is based on a double focusing mass spectrometer with a large radius
magnetic sector. The secondary ion optics has been optimized to work at full
transmission up to 6,000 mass resolving power. Together with high density cesium
or oxygen primary ion beam bombardment, this allows isotopic analysis of trace
elements at high sensitivity (e.g. mandatory for Pb analyses in Zircon).
Versatile multicollector system
Another key feature of the IMS
1280 is the multicollector system equipped with 5 moveable detectors (Electron
Multiplier or Faraday Cup) that allows to perform high precision isotope ratio
analyses from lithium to uranium in multicollection mode. The high level of
automation, in particular the introduction of automated routines for a precise
control of all relevant parameters before each analysis, has led to a dramatic
improvement in external reproducibility for stable isotope ratio measurements
(H, C, O, S, Li, B, Mg...).
In addition, the multicollection system significantly increases the throughput
of the instrument by reducing the total acquisition time.
Unique Direct Ion and Ion Microprobe Imaging
1280 is able to map the lateral distribution of major, minor and trace elements
or isotopes, providing both a direct ion imaging mode (microscope mode) and
a small spot rastering mode (microprobe mode).