Zobrazeno 1 - 10
of 97
pro vyhledávání: '"C Benazeth"'
Charge transfer in grazing scattering on clean and oxygen covered Cu(110) surfaces: velocity effects
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 230:317-322
We have measured negative (F − ) and positive (Na + , Li + ) charge fractions produced by grazing scattering from the corrugated metallic Cu(1 1 0) surface. A wide range of incident energies and scattered angles were explored in order to analyse th
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 230:178-184
Electronic polarization induced by low energy ions near solid surfaces at grazing incidence considerably modifies the collision geometry. This effect is studied by the comparison between experimental and simulated time of flight (ToF) spectra of heli
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 203:211-217
We compare the azimuthal distribution of H atoms after scattering off Ag(1 1 0) obtained by molecular dynamics with different H–Ag(1 1 0) potential energy surfaces (PES) and experimental results. We use grazing incident H atoms and low energies (up
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 193:396-402
The resonant charge exchange in the incoming path of alkali ions scattered at low energy from a polycrystalline nickel surface is studied by using the image effect occurring at glancing incidence (2–10° from the surface plane) and for specular ref
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 184:490-499
Our experimental measurements have revealed marked variations versus azimuthal angle of the positive and negative charge fractions produced by grazing scattering of different ions on a clean and flat NaCl(1 0 0) surface, at energies ranging from 2 to
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 183:279-284
In this paper, we present experimental results about the scattering of 4 keV Li+ ions by a polycrystalline nickel surface. Incidence angle was λ=4° and different values of the scattering angle α are considered. Two simulation methods are used in o
Autor:
B Arezki, P. Benoit-Cattin, M. Boudjema, N D'bichi, Y. Boudouma, A.C. Chami, K Khalal, C. Benazeth
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. :588-594
The energy spectra of particles scattered by solid surfaces are used to determine the inelastic energy loss at low energy. Assuming the binary collision approximation, a modified TRIM code provides length distributions which are converted to time-of-
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. :575-582
We have measured the angular polar distributions of the emitted particles (positive ions, negative ions and neutrals) in the scattering of 4 keV F + , Ne + and Na + from a NaCl (1 0 0) surface under an incidence angle of 2°. According to the inciden
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 149:257-262
In order to obtain better insight into the electron exchange processes in ion-alkali halide surfaces interactions, we performed azimuthal determinations of the charge fractions resulting from impact of 4 keV neon, sodium and fluorine positive ions on
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 149:7-16
Fast deuterium atomic and molecular ions (a few keV) are scattered from a NaCl (1 0 0) surface at an incidence angle of 15°. Time-of-flight (TOF) of both neutrals and ions are measured as a function of the scattering angle. Data show that neutralisa