Free access
Issue
Microsc. Microanal. Microstruct.
Volume 2, Number 2-3, April / June 1991
Page(s) 245 - 256
DOI http://dx.doi.org/10.1051/mmm:0199100202-3024500
Microsc. Microanal. Microstruct. 2, 245-256 (1991)
DOI: 10.1051/mmm:0199100202-3024500

Automated processing of parallel-detection EELS data

Michael K. Kundmann et Ondrej L. Krivanek

Gatan R&D, 6678 Owens Drive, Pleasanton, CA 94588, U.S.A.


Abstract
An algorithm for automatic detection and identification of edges in an EELS spectrum is presented. It has the following features: 1) it compresses the dynamic range of EELS spectra and enhances the ionization edge signals via difference transforms, 2) it removes residual background, thereby isolating sharp features associated with the edge thresholds and noise, 3) it distinguishes true edge-threshold features from noise via statistical analysis. In addition to paving the way for rapid, automated EELS elemental analysis, the algorithm is capable of detecting edges which are easily overlooked by human analysts.

PACS
0705K - Data analysis: algorithms and implementation; data management.
0781 - Electron and ion spectrometers.
8280 - Chemical analysis and related physical methods of analysis.

Key words
EEL spectroscopy -- Statistical method -- Algorithm -- Difference calculus -- Automated processing -- Data analysis -- Automatic detection -- Ionization edge


© EDP Sciences 1991

What is OpenURL?

The OpenURL standard is a protocol for transmission of metadata describing the resource that you wish to access.

An OpenURL link contains article metadata and directs it to the OpenURL server of your choice. The OpenURL server can provide access to the resource and also offer complementary services (specific search engine, export of references...). The OpenURL link can be generated by different means.

  • If your librarian has set up your subscription with an OpenURL resolver, OpenURL links appear automatically on the abstract pages.
  • You can define your own OpenURL resolver with your EDPS Account.
    In this case your choice will be given priority over that of your library.
  • You can use an add-on for your browser (Firefox or I.E.) to display OpenURL links on a page (see http://www.openly.com/openurlref/). You should disable this module if you wish to use the OpenURL server that you or your library have defined.