General Scan Evaluation
Routine data and cutting-edge research
DIFFRAC.EVA provides tools for the quick analysis of one- and two-dimensional diffraction data. It supports all Bruker detectors and XRD scan types. The EVA functionality covers a broad analytical spectrum from data reduction, basic scan evaluation and presentation, detailed peak analysis, phase identification and quantification, to the determination of crystallinity and crystallite size.
EVA interfaces with all relevant databases for phase identification and may additionally use crystal structures and complementary chemical composition information from e.g. XRF based chemical analysis for its award-winning species dentification.
Furthermore, DIFFRAC.EVA supports the efficient evaluation of big data that originate from today’s fast detectors, the use of in-situ environments, high-throughput screening or spatially resolved measurements. The software provides specific chart types, but also advanced chemometrics tools for cluster analysis and pattern-matching based crystalline and amorphous species identification and quantification.
It fully supports conventional file-based tasks but also integrates the DIFFRAC.SUITE database infrastructure for daily work, even in controlled environments as required by the 21 CFR Part 11 regulations for the pharmaceutical industry.
Finally, DIFFRAC.EVA is used for the preparation of publication ready graphs and user specific reports, either directly in EVA or using the DIFFRAC.SUITE RESULTS-MANAGER and the instrument database.
DIFFRAC.EVA is the software of choice to get a first impression of the measurement. An important step is the data reduction from one or several snapshot images of steady detectors or re-binning the pixels from a scanning 2D detector into conventional 1-dimensional XRD data. EVA provides the well-established tools to further analysis of those 1D data. This ranges from routine signal processing to scan arithmetics and more advanced techniques to look at individual peaks and complete scans.
Cluster analysis in EVA provides deeper understanding and intuitive presentations of large X-ray data sets.
The cluster analysis tool is an adaption of the well-known Polysnap software. It assists in the identification of known and unknown samples, analyzes mixtures, outliers, and assists in quality control. It is used for high-thoughput screening but also for analyzing non-ambient data.
DIFFRAC.EVA – Cluster analysis, 3D MMDS view
Metric multi-dimensional scaling is a way to represent cluster analysis data graphically in 3D. EVA also offers PCA plots and up to 6-dimensional charts for visualizing additional information.
The multi-scan reader quickly loads hundreds of scans and provides a simple overview in a two-dimensional representation. Outliers in regular quality control measurements are easily spotted and specific scans worth a detailed examination can be extracted from reciprocal space maps or series of non-ambient or in-operando measurements.
Supplementary scan information such as measurement position, temperature, humidity, charge states, or even intensity of an individual peak or the amount of amorphous background can be visualized in the side-view. Again, this assists in finding scans of interest for the further examination of phase transformations, the decomposition or formation of phases.
A simple way of monitoring sample morphology (i.e. spottiness due to uneven grain size, texture or preferred orientation because of alignment of crystallites in the specimen holder) is achieved by utilizing the large beam footprint and the high resolution of the Bragg-Brentano geometry in combination with asymmetric 1D detection using the LYNXEYE detector family. DIFFRAC.EVA is used to visualize those data and to select individual scans for further detailed inspection.
Since its first release, EVA's search/match module is generally appreciated as the most reliable and most accurate tool for phase identification. Correspondingly, EVA performed best in an international Search-Match Round Robin (Le Meins et al., 2002, www.cristal.org/smrr). Since then numerous improvements have further differentiated EVA from conventional software for phase analysis
|The current version of the software is DIFFRAC.EVA V6, DIFFRAC.Part 11 V7|
Version 8 and two versions backwards compatible for r/w access
cGxP/21CFR Part 11
|Windows 8, 32-bit
Windows 10, 11, 64-bit
Free Maintenance Update
The free DIFFRAC.EVA Maintenance Update renews your EVA version to the most recent release. Regardless of your EVA license level, you can always download the latest Maintenance Update from www.brukersupport.com, free of charge!
By keeping your DIFFRAC.EVA up to date, you will benefit from all bugfixes made for the current but also all previously released versions, regardless of the license level. DIFFRAC.EVA Maintenance Updates are cumulative and can therefore be applied to any previous version.
What are Upgrades?
DIFFRAC.EVA Maintenance Updates do not come with new features. If you want to benefit from features introduced in new major releases you need to purchase the latest DIFFRAC.EVA upgrade.