Electron Energy-Loss Spectroscopy: Fundamentals and applications in the characterization of minerals
The combined use of an energy-loss spectrometer and an analytical electron microscope with fine probe forming capabilities provides a wealth of information about the sample at high spatial resolution. Fundamental principles governing the physics of the interaction between the fast electron and a thin foil sample, to account for the fine structure in the inelastically scattered fast electron distribution (Electron-Energy Loss Spectroscopy, EELS), will be reviewed. General application of EELS is in the area of low atomic number elements (Z < 11) microanalysis, where it significantly complements the more widely used Energy Dispersive X-ray Spectroscopy (EDXS). However, a careful analysis of the low loss plasmon oscillations and the fine structure in the core-loss edges, can provide additional information related to the bonding and electronic structure of the sample. An illustration of this is presented from our study of Cdelta diamond residue from the Allende carbonaceous chondrite. Combination of EELS with channeling effects can provide specific site occupation/valence information in crystalline materials. Details of this novel crystallographic method will be outlined and illustrated with an example of the study of chromite spinels. Finally, some pertinent experimental details will be discussed. 7 figs.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6224209
- Report Number(s):
- LBL-27014; CONF-880912-30; ON: DE89013420
- Resource Relation:
- Conference: 196. American Chemical Society national meeting, Los Angeles, CA, USA, 25 Sep 1988; Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
Similar Records
The Origin of Refractory Minerals in Comet 81P/Wild 2
Spinel Ferrite Core–Shell Nanostructures by a Versatile Solvothermal Seed-Mediated Growth Approach and Study of Their Nanointerfaces
Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CHONDRITES
ENERGY-LOSS SPECTROSCOPY
DIAMONDS
MINERALS
FINE STRUCTURE
MICROANALYSIS
SPINELS
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CARBON
CHALCOGENIDES
ELECTRON SPECTROSCOPY
ELEMENTAL MINERALS
ELEMENTS
MAGNESIUM COMPOUNDS
MAGNESIUM OXIDES
METEORITES
NONMETALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
SPECTROSCOPY
STONE METEORITES
400102* - Chemical & Spectral Procedures