Specification: search-match

Input data

CSM's unique search-match algorithm works with profile (raw) data, internally derived peak lists, imported peak lists or a combination of these. Toolbar buttons allow instant switching between the different inputs, so that alternative perspectives may be obtained on difficult datasets.

A single button performs any necessary background subtraction, ka₂ stripping and peak finding; and within seconds presents a list of candidate materials - possible components of the unknown powder.

Automatic residual search

CSM is perfect for multi-phase problems. Once a candidate material is deemed as matched, then a new list of candidates is produced automatically. There is no need to mark areas of the pattern as matched, nor search the database again.

Flexible search strategies

A choice of search strategies for single or multi-phase data is offered. Full control over other search parameters, including for example an 'ignore intensities' option for neutron / preferred orientation situations.

A novel 'dynamic range-tracking' option is provided, in which the candidates list is dynamically re-sorted to include only the data visible in the graph range. Zoom in on an area of your pattern and see the likely contributing materials!

Putting in knowledge of the sample

Another unique feature of CSM is that candidate materials may be restricted according to card-retrieval settings. This gives a highly flexible method of specifying knowledge of the sample: constituent elements, sub-file, crystal system and so forth.

Integration with powder and card display

Within CSM, the search-match process is fully integrated with the powder simulation and card display tools. This means that PDF cards for candidate materials may be viewed instantly from within the program. Likewise, powder simulations for candidate materials are generated with a single-mouse click for comparison with the unknown. Furthermore, CSM maintains a multi-phase simulation composed of the sum of the matched materials, with appropriate scale factors

Semi-quantitative analysis

CSM allows estimates of the concentrations by mass of the constituent materials in a multi-phase unknown. This is done using the standard method involving tabulated I / I_corundum values.