BSE Adjustor

the bse adjustor can be used to try to correct bse measurement artifacts caused by instability in the electron beam or temperature changes affecting the bse amplifier it should be noted that the bse adjustor can only correct relatively small shifts in bse, and if there are large changes in the bse image being collected by the sem, a service call should be placed to ensure there are no inherent faults in the system or checking the filament alignment or age as these can affect the stability of the bse being collected there are three correctional options available within the bse adjustor, automatically adjust using the background, automatedly adjust based on material, or applying a fixed bse based on material adjust by image background using this option, amics will examine all segments assigned as background in each field, and digitally adjust the brightness of the bse image to best match the target bse value the process by which amics does this is to example the histogram of bse values for all background segments, and adjusting the brightness such that the peak matches the target bse value auto adjust by mineral this option will check the bse distribution of the mineral phases for each field, and will automatically adjust the brightness of all the fields such that the histogram peak for all the fields is as well matched as possible using this option will disable the target bse value, as amics will automatically find the appropriate bse value based on the data adjust by given mineral when this option is selected the material classification list becomes active, and a single material can be selected as the reference bse adjustment in general, for this option to work successfully every field in the measurement should contain the selected material, otherwise, amics will not have a reference bse value for barren fields when selecting the material, a historgram of bse values for that material in the whole specimen is displayed in the right hand panel this provides a reference as to how confined the bse value for that material is it also suggested to use of materials with a narrow bse spread once the required settings have been selected, clicking the adjust button will execute the automated bse correct for the whole sample to revert to the original image, in case the bse correction was not appropriate, select the down arrow of the bse adj option will allow you to undo the last adjustment or revert to the original image