Zobrazeno 1 - 10
of 70
pro vyhledávání: '"R. C. Monreal"'
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 269:1296-1299
In Low Energy Ion Scattering (LEIS), Auger-neutralization is an omnipresent charge exchange mechanism, especially when noble gas ions are used as projectiles, with a primary energy below the threshold energy, Eth, for collision induced charge exchang
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 267:571-574
The survival of ions during grazing scattering of keV He+ ions from a clean Ni(1 1 0) surface is studied as function of target temperature. We observe ion fractions in the scattered beams of typically 10−3 which show a slight increase with temperat
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 256:6-10
In this article we investigate the effect that hybridization between the 5s- and 4d-orbitals of Ag has in the calculations of Auger neutralization rate and ion survival probability for grazing collisions of He+ with Ag(1 1 0) surfaces. We find that i
Publikováno v:
Physical Review B: Condensed Matter and Materials Physics (1998-2015)
Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2015, 92 (12), pp.125435 (1-10). ⟨10.1103/PhysRevB.92.125435⟩
Biblos-e Archivo. Repositorio Institucional de la UAM
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Physical Review B: Condensed Matter and Materials Physics (1998-2015), American Physical Society, 2015, 92 (12), pp.125435 (1-10). ⟨10.1103/PhysRevB.92.125435⟩
Biblos-e Archivo. Repositorio Institucional de la UAM
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We develop a theoretical approach to study the transient dynamics and the time-dependent statistics for the Anderson-Holstein model in the regime of strong electron-phonon coupling. For this purpose we adapt a recently introduced diagrammatic approac
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e024db1ed83f63598f3580f229e6d823
https://hal.archives-ouvertes.fr/hal-01216379/document
https://hal.archives-ouvertes.fr/hal-01216379/document
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 232:27-31
We present results of a study of He + neutralisation on clean and oxygen covered Al(1 1 1). For clean Al(1 1 1) we find a small ion fraction which rapidly increases with increasing ion energy attaining about (0.4 ± 0.1)% at 4 keV. The overall behavi
Publikováno v:
physica status solidi (b). 241:2367-2373
Neutralization of He + ions in grazing incidence scattering on Ag(111) and Ag(110) surfaces is studied. These measurements reveal the existence of an order of magnitude difference in the probability of ion survival on Ag(110) and Ag(111). The effect
Publikováno v:
Journal of Physics: Condensed Matter. 15:1165-1171
Neutralization of He+ ions in grazing incidence scattering on Ag(111) is studied. A small scattered ion fraction is observed. The experimental results are discussed in terms of survival from Auger neutralization, whose rates are derived theoretically
Publikováno v:
Biblos-e Archivo. Repositorio Institucional de la UAM
instname
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A theoretical approach for the non-equilibrium transport properties of nanoscale systems coupled to metallic electrodes with strong electron-phonon interactions is presented. It consists in a resummation of the dominant Feynman diagrams from the pert
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::25c586771a0e8e90cb37eb9a3ccd6c60
Autor:
R. C. Monreal, Evelina A. García
Publikováno v:
Physical Review B. 61:13565-13572
Publikováno v:
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. :879-885
We have measured energy distributions of electrons emitted from clean aluminum surfaces by 20 keV/amu H + , He + and He 0 projectiles. Ratios of energy distributions obtained from two types of projectiles carry information on differences in the elect