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To complement EDS analysis for light element work, or where elemental overlaps cause serious problems, the micro characterization scientist often employs a wavelength dispersive X-ray spectrometer (WDS).
Compared to the EDS system the WDS will provide the scientist with following improvements:
- Light element performance
- Resolutions and elemental identification
- Sensitivities and quantification
The LambdaSpec is:
- A uniquely designed, compact WDS system that will fit “all” WDS ports and even most EDS ports
- A parallel beam X-ray spectrometer, that can be fitted with either the unique high collection optics or a capillary optic
- A flat crystal X-ray spectrometer, designed either for low voltage (<2.4 keV) microanalysis, or up to 10keV X-ray analysis
- Fitted with five diffractors, optimized to your specific application
- Available with a gate valve to isolate the spectrometer from the SEM sample chamber
- Available with “AutoFocus” to optimize the analysis for varying sample heights
Why WDS?
A WDS is designed to meet the needs of today’s material scientist. The application could be low voltage microanalysis where only X-ray data below 5keV is available; in this region the EDS detector’s resolution performance will not enable the scientist to perform with the desired accuracy, qualitative or quantitative analysis. The application may require the scientist to analyze the energies between 4 keV and 10keV, where the transition elements K lines and refractory elements L lines cause overlap concerns. The scientist may also want to determine trace levels of elements within a complex matrix.
A WDS system helps to resolve these application challenges by providing solutions through the improved resolution and better sensitivities offered by a WDS as compared to an EDS detector.
The LambdaSpec is available in two models, the LEXS - Low Energy X-ray Spectrometer and the TEXS High Precision (HP) - Transition Element X-ray Spectrometer. Both options may be fitted with up to five diffracting crystals, a flow proportional counter, counting electronics, gate valve, and AutoFocus routine.
The software has been designed to enable the EDAX LambdaSpec to be operated as an EDS system with an easy to use user interface, without having to consider wavelengths and angles.
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