- Title
- Optimizing EELS acquisition
- Creator
- Bosman, Michel; Keast, Vicki J.
- Relation
- Ultramicroscopy Vol. 108, Issue 9, p. 837-846
- Publisher Link
- http://dx.doi.org/10.1016/j.ultramic.2008.02.003
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2008
- Description
- A method for spectral acquisition, called binned gain averaging, will be described and tested. Systematic or correlated noise is efficiently suppressed with this method by averaging the gain over a series of CCD pixels. As a result, improved signal-to-noise ratios are obtained that allow the detection of very weak signals. At the same time, the spectral energy resolution is not degraded-even for long acquisition periods. It will be demonstrated that with this method, it is possible to significantly enhance the acquisition speed and quality of electron energy-loss (EEL) spectra and EELS maps. Examples will be given of double ionic scattering (i.e. the detection of the second boron K-edge) and the mapping of gold surface plasmons in the near-infrared and visible energy range.
- Subject
- acquisition technique; double ionic scattering; EELS; STEM; Surface plasmons
- Identifier
- uon:5411
- Identifier
- http://hdl.handle.net/1959.13/43291
- Identifier
- ISSN:0304-3991
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