Photoelectron diffraction and holography: Some new directions
- Lawrence Berkeley Lab., CA (United States)
Photoelectron diffraction has by now become a versatile and powerful technique for studying surface structures, with special capabilities for resolving chemical and magnetic states of atoms and deriving direct structural information from both forward scattering along bond directions and back-scattering path length differences. Further fitting experiment to theory can lead to structural accuracies in the {plus_minus}0.03 ){Angstrom} range. Holographic inversions of such diffraction data also show considerable promise for deriving local three-dimensional structures around a given emitter with accuracies of {plus_minus}0.2--0.3 {Angstrom}. Resolving the photoelectron spin in some way and using circularly polarized radiation for excitation provide added dimensions for the study of magnetic systems and chiral experimental geometries. Synchrotron radiation with the highest brightness and energy resolution, as well as variable polarization, is crucial to the full exploitation of these techniques.
- Research Organization:
- Lawrence Berkeley Lab., CA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States); Department of Defense, Washington, DC (United States)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 10121187
- Report Number(s):
- LBL--35051; CONF-9308154--3; ON: DE94006297; CNN: Contract N00014-90-J-1457; Contract N00014-92-J-1140
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400101
665100
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ACTIVATION, NUCLEAR REACTION, RADIOMETRIC, AND RADIOCHEMICAL PROCEDURES
ELECTRON DIFFRACTION
HOLOGRAPHY
IMAGE PROCESSING
NUCLEAR TECHNIQUES IN CONDENSED MATTER PHYSICS
PHOTOELECTRIC EFFECT
POLARIZATION
POLARIZED BEAMS
SPIN
STRUCTURAL CHEMICAL ANALYSIS
SURFACES
SYNCHROTRON RADIATION