Diffraction of swift atoms after grazing scattering from metal surfaces: N/Ag(111) system

Journal Article · Mon Nov 15 00:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.82.052904· OSTI ID:21528660

Gravielle, M S ^[1]; Bocan, G A ^[2]; Diez Muino, R ^[3]

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1. Instituto de Astronomia y Fisica del Espacio (CONICET-UBA) and Departamento de Fisica, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires (Argentina)
2. Centro Atomico Bariloche, Comision Nacional de Energia Atomica, and Consejo Nacional de Investigaciones Cientificas y Tecnicas, S.C. de Bariloche, Rio Negro (Argentina)
3. Donostia International Physics Center (DIPC) and Centro de Fisica de Materiales CSIC-UPV/EHU, San Sebastian (Spain)

Diffraction patterns produced by grazing scattering of fast N atoms from a Ag(111) surface are investigated by employing the surface eikonal approximation. This method is a distorted-wave theory that takes into account the coherent addition of contributions coming from different projectile paths. In the model the projectile-surface potential is obtained from an accurate density-functional theory calculation. The dependence of the scattered projectile spectra on impact energy and incidence channel is analyzed, and possible incident direction and energy range for the observation of the interference patterns are predicted. In addition, it is found that as a result of the high reactivity of N atoms, asymmetries of the surface potential might be detected through their effects on diffraction patterns.

• OSTI ID: 21528660
• Journal Information: Physical Review. A, Vol. 82, Issue 5; Other Information: DOI: 10.1103/PhysRevA.82.052904; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
ATOMIC BEAM DIFFRACTION
DENSITY FUNCTIONAL METHOD
DISTORTED WAVE THEORY
EIKONAL APPROXIMATION
ENERGY RANGE
INTERFERENCE
NITROGEN
PROJECTILES
REACTIVITY
SILVER
SPECTRA
SURFACE POTENTIAL
APPROXIMATIONS
CALCULATION METHODS
COHERENT SCATTERING
DIFFRACTION
ELEMENTS
METALS
NONMETALS
POTENTIALS
SCATTERING
TRANSITION ELEMENTS
VARIATIONAL METHODS