Investigator
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Mapping Modes
Rare Phases Search
3 min
the rare phases search measurement mode allows users to selectively only analyze materials that match a specific bse grey level window this mode of analysis operates based on the same algorithm as the segmentation mapping mode, and in fact, will do an initial image acquisition and image segmentation before executing the rare phases search mode starts once the original image is segmented amics will filter all segments based on their bse grey level value, and only analyze segments within the selected threshold amics will either complete a normal single point analysis at a centroid location within the filtered segments or an updated segmentation setting can be applied to further subsegment the filtered segments using a different segmentation to increase segment numbers can provide finer details to set up a rare phases search mapping, this option needs to be selected when creating a new specimen as usual, a material classification method as well as sample type needs to be selected when creating the sample once the new rare phases search mapping measurement(s) have been added to the required specimen, the measurement properties will have the same settings as segmentation mapping mode this document will not go over the setup procedures for the normal segmentation mapping mode, which can be accessed https //app archbee com/docs/ulnx6skegc8ehmpkog5xe/lgusr0m0hdq9r0af84emq , and only focus on the "extra features" required for the rare phases search mapping once the new rare phases search mapping measurement(s) have been added to the required specimen, the measurement properties will have the same settings as segmentation mapping mode this document will not go over the setup procedures for the normal segmentation mapping mode, which can be accessed here, and only focus on the "extra features" required for the rare phases search mapping the first two options in the "extra features" setting provide the ability to select the bse windows for filtering of segments the "bright grain bse low" will set the lower bse threshold, while the "bright grain bse high" will set the upper bse threshold the next setting, "min segment size (mm)", will allow segments that are too small to be of interest to be excluded from the measurement the following two settings allow for different segmentation settings to be used on the filtered segments if these settings are kept the same as those used for the segmentation mapping mode, in the image processing section, then the filter segment will not be changed however, adjustment of these settings could subsegment the filtered segments, and therefore increase the number of x ray points acquired for filtered segments to provide finer chemical resolution