X-RAY ABSORPTION FINE STRUCTURE IN CRYSTALLINE AND NON-CRYSTALLINE MATERIALS,
Abstract
The fluctuations of absorption coefficient which appear on the high energy side of x-ray absorption edges have been separated historically and physically into two different but similar effects. The structure in and near the edge (Kossel structure) has been explained by electron transitions from inner levels to unfilled atomic levels of the atom involved in the absorption event. On the other hand, the extended x-ray absorption fine structure beginning near the edge and extending many hundreds of electron volts must be due to electron transitions to levels belonging to the molecule, near neighbors, or cyrstal as a whole. Although many attempts have been made, most x-ray spectroscopists agree that a satisfactory theory has yet to be advanced. It is the purpose of this paper to introduce a partially phenomenological theory and to analyze extended x-ray absorption fine structure data from a number of crystalline and non-crystalline solids.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jul 01, 1964
- Accession Number
- AD0607766
Entities
People
- Farrel W. Lytle
Organizations
- Boeing