The SX 100 Microprobe: The Best Suited Tool for Monazite Dating
• High stability electron column for accurate quantitative analysis, high beam curent regulation (to 1µA) • High reproducibility of linear, optically encoded
spectrometer positions for trace measurements • High intensity
spectrometers with large crystals on 160mm radius for maximum resolution • In-situ and non-destructive measurement • LaB6 sources providing maximum brightness and high spatial resolution: 0.4-0.5µm (10kV, 100nA) • BSE Detector with high dynamic BSE amplifier (allowing high current exposure), BSE diode protective shielding. Thanks to these unique features, the SX100 offers unequaledcapabilities for trace element detection in small volumes.
Software Capabilities
Automatic particle search • BSE and Th M α image acquisition • Automatic detection of monazite • Export of the particle coordinatesallowing automatic measurements on each particle. Spectra simulation • Position of the interferences relative to the peak of interest • Prediction of the overlapping level. Multi-spectrometer counting • Measurement of one element on several
spectrometers simultaneously for improved detection • Combination of the measurements to calculate concentration, detection limit and statistical precision • Improved quantification for trace or low concentration elements.
Th M α U M β Age Age integration and mapping • Age quantification at the measured point,estimation of the age error • Age mapping: age maps revealing the chronologicalsubdomains are constructed based on fully quantified
concentration maps of Th, U and Pb.
40µm Pb M α Y L α 240419231442
962
4810
(Ma) From “Electron microprobe age mapping”,P. Goncalves et al., American Mineralogist 90. 40µm
Geochronology & EPMA
Application note
CAMECA SX 100: Geochronology and EPMA. - 29082 SX100
