Application of a double-pass CMA to ion scattering from some actinide materials
Surfaces of polycrystalline U, Th, and single-crystalline UO/sub 2/(111) have been examined with He/sup +/, Ne/sup +/, and Ar/sup +/ at incident beam energies E/sub i/< or =650 eV. For this study we used a double-pass cylindrical mirror analyzer in a custom vacuum system intended primarily for UPS chemisorption studies. The incident ion beam was perpendicular to the axis of the analyzer. Our approach was to determine if the instrument could serve in a complementary ISS capacity and, if so, what the ion scattering conditions are for detecting both surface oxygen and the actinides. Data are presented illustrating definitive results. But severe limitations in resolution are evident, the energies do not correspond exactly to a simple binary-collision model, and with He/sup +/ the scattering intensities from actinide materials are quite low by comparison with a Au reference.
- Research Organization:
- University of California, Los Alamos Scientific Laboratory, Los Alamos, New Mexico 87545
- OSTI ID:
- 6807840
- Journal Information:
- J. Vac. Sci. Technol.; (United States), Journal Name: J. Vac. Sci. Technol.; (United States) Vol. 15:2; ISSN JVSTA
- Country of Publication:
- United States
- Language:
- English
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71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACTINIDE COMPOUNDS
ACTINIDES
ARGON IONS
ATOM COLLISIONS
BEAMS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
CHEMISORPTION
COLLISIONS
CRYOGENIC FLUIDS
CRYSTALS
ELEMENTS
ENERGY RANGE
ENERGY SPECTRA
EV RANGE
EV RANGE 100-1000
FLUIDS
HELIUM IONS
ION BEAMS
ION COLLISIONS
ION SCATTERING ANALYSIS
ION-ATOM COLLISIONS
IONS
METALS
MONOCRYSTALS
NEON IONS
NONDESTRUCTIVE ANALYSIS
NONMETALS
OXIDES
OXYGEN
OXYGEN COMPOUNDS
POLYCRYSTALS
RESOLUTION
SEPARATION PROCESSES
SORPTION
SPECTRA
SURFACES
THORIUM
URANIUM
URANIUM COMPOUNDS
URANIUM OXIDES