Trajectory analysis of low-energy and hyperthermal ions scattered from Cu(110)
Technical Report
·
OSTI ID:5462799
Trajectories of Na{sup +} ions scattered from the Cu(110) surface in the <1 1bar 0> and <001> azimuths were studied for a range of incident energies from 56 eV to 4 keV. The goal is to explain the trends observed in the energy spectra and determine what types of trajectories contribute to these spectra. Using the computer program SAFARI, simulations were performed with trajectory analyses for 100-, 200-, and 400-eV scattering. We show results from the 100-eV simulations in both azimuths and compare them with the experimental data. The simulated energy spectra are in excellent agreement with the data. Ion trajectories and impact parameter plots from the simulations are used to determine the relative importance of different types of ion-surface-atom collisions. The simulations have shown that the striking differences observed in comparing the <1 1bar 0> and <001> spectra are mostly due to ions which scatter from second-layer atoms. This system exhibits strong focusing onto the second-layer atoms by the first-layer rows, and the focusing is very sensitive to the spacing between the rows. At the lower beam energies, scattering from the second layer dominates the measured spectra.
- Research Organization:
- Cornell Univ., Ithaca, NY (USA). Lab. for Atomic and Solid State Physics
- OSTI ID:
- 5462799
- Report Number(s):
- AD-A-210858/7/XAB
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
656003 -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMS
BEAMS
CHARGED PARTICLES
CHEMICAL ANALYSIS
COPPER
CRYSTAL STRUCTURE
DATA
ELECTRON SPECTRA
ELEMENTS
ENERGY RANGE
EV RANGE
EV RANGE 10-100
EV RANGE 100-1000
EXPERIMENTAL DATA
FOCUSING
INFORMATION
INTERACTIONS
ION BEAMS
ION SCATTERING ANALYSIS
IONS
KEV RANGE
KEV RANGE 01-10
LAYERS
METALS
NONDESTRUCTIVE ANALYSIS
NUMERICAL DATA
SCATTERING
SIMULATION
SODIUM IONS
SPECTRA
SPECTROSCOPY
SURFACES
TRAJECTORIES
TRANSITION ELEMENTS
Molecular & Chemical Physics-- Beams & their Reactions
656003 -- Condensed Matter Physics-- Interactions between Beams & Condensed Matter-- (1987-)
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMS
BEAMS
CHARGED PARTICLES
CHEMICAL ANALYSIS
COPPER
CRYSTAL STRUCTURE
DATA
ELECTRON SPECTRA
ELEMENTS
ENERGY RANGE
EV RANGE
EV RANGE 10-100
EV RANGE 100-1000
EXPERIMENTAL DATA
FOCUSING
INFORMATION
INTERACTIONS
ION BEAMS
ION SCATTERING ANALYSIS
IONS
KEV RANGE
KEV RANGE 01-10
LAYERS
METALS
NONDESTRUCTIVE ANALYSIS
NUMERICAL DATA
SCATTERING
SIMULATION
SODIUM IONS
SPECTRA
SPECTROSCOPY
SURFACES
TRAJECTORIES
TRANSITION ELEMENTS