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dc.contributor.author
Gravielle, Maria Silvia  
dc.contributor.author
Miraglia, Jorge Esteban  
dc.date.available
2017-06-13T20:01:59Z  
dc.date.issued
2016-04-02  
dc.identifier.citation
Gravielle, Maria Silvia; Miraglia, Jorge Esteban; Single- and double-slit collimating effects on fast-atom diffraction spectra; Elsevier Science; Nuclear Instruments And Methods In Physics Research B: Beam Interactions With Materials And Atoms; 382; 2-4-2016; 42-48  
dc.identifier.issn
0168-583X  
dc.identifier.uri
http://hdl.handle.net/11336/18137  
dc.description.abstract
Diffraction patterns produced by fast He atoms grazingly impinging on a LiF(001) surface are investigated focusing on the influence of the beam collimation. Single- and double-slit collimating devices situated in front of the beam source are considered. To describe the scattering process we use the Surface Initial Value Representation (SIVR) approximation, which is a semi-quantum approach that incorporates a realistic description of the initial wave packet in terms of the collimating parameters. Our initial wavepacket model is based on the Van Cittert-Zernike theorem. For a single-slit collimation the width of the collimating aperture controls the shape of the azimuthal angle distribution, making different interference mechanisms visible, while the length of the slit affects the polar angle distribution. Additionally, we found that by means of a double-slit collimation it might be possible to obtain a wide polar angle distribution, which is associated with a large spread of the initial momentum perpendicular to the surface, derived from the uncertainty principle. It might be used as a simple way to probe the surface potential for different normal energies.  
dc.format
application/pdf  
dc.language.iso
eng  
dc.publisher
Elsevier Science  
dc.rights
info:eu-repo/semantics/embargoedAccess  
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/  
dc.subject
Fast Atom Diffraction  
dc.subject
Surface  
dc.subject
Beam Collimation  
dc.subject
Coherence  
dc.subject.classification
Física Atómica, Molecular y Química  
dc.subject.classification
Ciencias Físicas  
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS  
dc.title
Single- and double-slit collimating effects on fast-atom diffraction spectra  
dc.type
info:eu-repo/semantics/article  
dc.type
info:ar-repo/semantics/artículo  
dc.type
info:eu-repo/semantics/publishedVersion  
dc.date.updated
2017-06-13T14:14:17Z  
dc.journal.volume
382  
dc.journal.pagination
42-48  
dc.journal.pais
Países Bajos  
dc.journal.ciudad
Amsterdam  
dc.description.fil
Fil: Gravielle, Maria Silvia. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina  
dc.description.fil
Fil: Miraglia, Jorge Esteban. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina  
dc.journal.title
Nuclear Instruments And Methods In Physics Research B: Beam Interactions With Materials And Atoms  
dc.rights.embargoDate
2018-04-30  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.nimb.2016.03.042  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0168583X16300234  
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://arxiv.org/abs/1512.07457