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Total count is achieved either by use of direct or indirect counts. One method of direct count is the use of a haemocytometer. A haemocytometer is a specialized microscope slide important in cell counting. The central part of this slide has etched grids with precisely spaced lines to enable accurate counting.
Electron microscopic analysis method for nanoscale resolution of helium element distribution
PendingCN122259615AMicroscopic analysis implementationImage analysisPreparing sample for investigationData setTotal count
The application relates to a method for electron microscopic analysis of helium element distribution with nanoscale resolution, and belongs to the technical field of transmission electron microscope microscopic analysis. The method for electron microscopic analysis of helium element distribution with nanoscale resolution comprises the following steps: pixel point scanning and collection are performed on a region where helium bubbles of a sample to be measured are located, so that an electron energy loss spectrum is obtained; an electron energy loss spectrum data set is obtained; background deduction is performed on the electron energy loss spectrum data set, so that a helium characteristic peak signal spectrum line data set is obtained; a distribution image of helium elements is obtained according to total count intensities of helium characteristic peak signals of data points in the helium characteristic peak signal spectrum line data set; and a distribution image of helium atom density is obtained according to count intensities of data points in the helium characteristic peak signal spectrum line data set within a preset energy range. The analysis method provided by the application can not only realize microscopic analysis of the nanoscale resolution distribution of helium elements in materials, but also can distinguish the distribution difference of helium atom density in different regions.
Owner:INSTITUTE OF NUCLEAR PHYSICS AND CHEMISTRY CHINA ACADEMY OF ENGINEERING PHYSICS