EDAX Lambda WDS Spectrometers

The EDAX Lambda™ wavelength dispersive spectroscopy (WDS) spectrometers are state-of-the-art for improved accuracy and precision, guaranteeing the best results for your materials analysis. The Lambda spectrometers are included with the EDAX Neptune and Trident analysis systems, significantly enhancing the accuracy of results by resolving energy dispersive x-ray spectroscopy (EDS) peak overlaps, improving the minimum detection limit by 10x, and providing precise quantification.

Resources

Designed for parallel beam operation, the Lambda spectrometers are available in models:

EDAX Lambda Plus – Delivers the maximum efficiency for transition element energies from 150 eV – 10 keV (B Kα to Ge Kα) using polycapillary optics
EDAX Lambda Super ‐ Combines polycapillary optics and dual optics design to provide the ultimate efficacy for light elements, especially B, C, N, and O, using high-collection, reflective x-ray optics

Overlap of silicon K and tungsten M lines are easily resolved using WDS instead of EDS.

Figure 1. Overlap of Si K and W M lines are easily resolved using WDS instead of EDS.

Scanning modes

The Lambda spectrometers can scan over the entire energy range to cover at least one x-ray line for each element in the periodic table. Scanning mode options include:

Automatic acquisition of one or many elements
Ability to customize the scan range to your application
User-selectable step size and speed
Peak and background modes for a selection of elements
- Define elements through an intuitive periodic table interface
- The software suggests diffractor, peak, and background positions

Qualitative and quantitative analysis

The EDAX APEX™ software with Smart Quant provides users with qualitative and quantitative measurements. Simultaneously collect and overlay EDS and WDS data for easy qualitative confirmation. The analyst can select a technique (EDS or WDS) for the quantification of a desired element to improve precision and detection limits.

Features and benefits

Compact design

Fits all scanning electron microscope (SEM) chambers with an available high-angle port
Installs on standard EDS port – No special chamber or port required

Sensitivity

Combines x-ray optics and compact design to deliver superior count rates

Figure 2. C in SiC showing superior resolution of WDS compared to EDS.

High count rates and peak-to-background ratios

Rapid x-ray analysis at the best resolution available
Excellent resolution of the K lines of transition elements
Able to resolve most elemental overlaps

Ease of alignment

Automated routines improve the operation, performance, and accuracy of data

Seamless integration with EDS and easy-to-use APEX software/h5>

Intuitive operation for EDS and WDS users
Improved x-ray microanalysis
Covers the entire periodic table

Smart Focus

The Smart Focus routine is a feature of the APEX software. The automated routine adjusts the sample height to focus the WDS signal, enabling the spectrometer’s optimum performance.

Wavelength Dispersive Spectroscopy (WDS)