Dwell time
Dwell time
"Dwell time" means a time for an electron beam to stay per pixel at acquisition of a STEM image by electron-beam scan. The Dwell time is an index for the scan speed of the electron beam.
When the Dwell time is multiplied by the number of scan pixels in one horizontal line scan, and then the Flyback time is added, the scan time for one horizontal line scan is obtained. When this scan time is multiplied by the number of the vertical scans (horizontal scan lines), the acquisition time of one scanning image is calculated.
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