Artículo
Gravielle, M.S.; Miraglia, J.E. "Influence of beam collimation on fast-atom diffraction studied via a semiquantum approach" (2015) Physical Review A - Atomic, Molecular, and Optical Physics. 92(6)
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Abstract:
The influence of the collimating conditions of the incident beam on diffraction patterns produced by grazing scattering of fast atoms off crystal surfaces is studied within a semiquantum approach, called the surface initial value representation (SIVR) approximation. In this approach we incorporate a realistic description of the incident particle in terms of the collimating parameters, which determine the surface area that is coherently illuminated. The model is applied to He atoms colliding with a LiF(001) surface after passing through a rectangular aperture. As was experimentally observed [Nucl. Instrum. Methods Phys. Res., Sect. B 350, 99 (2015)NIMBEU0168-583X10.1016/j.nimb.2015.01.016], SIVR spectra as a function of the azimuthal angle are very sensitive to the width of the collimating slit. We also found that the length of the collimating aperture affects polar angle distributions, introducing additional interference structures for the longer collimating slits. © 2015 American Physical Society.
Registro:
| Documento: | Artículo |
| Título: | Influence of beam collimation on fast-atom diffraction studied via a semiquantum approach |
| Autor: | Gravielle, M.S.; Miraglia, J.E. |
| Filiación: | Instituto de Astronomía y Física Del Espacio (IAFE, CONICET-UBA), casilla de correo 67, sucursal 28, Buenos Aires, C1428EGA, Argentina |
| Palabras clave: | Diffraction; Beam collimation; Crystal surfaces; Fast atom diffractions; Grazing scattering; Incident particles; Initial value representation; Interference structures; Rectangular aperture; Atoms |
| Año: | 2015 |
| Volumen: | 92 |
| Número: | 6 |
| DOI: | http://dx.doi.org/10.1103/PhysRevA.92.062709 |
| Título revista: | Physical Review A - Atomic, Molecular, and Optical Physics |
| Título revista abreviado: | Phys Rev A |
| ISSN: | 10502947 |
| CODEN: | PLRAA |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v92_n6_p_Gravielle |
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Citas:
---------- APA ----------
Gravielle, M.S. & Miraglia, J.E. (2015) . Influence of beam collimation on fast-atom diffraction studied via a semiquantum approach. Physical Review A - Atomic, Molecular, and Optical Physics, 92(6).http://dx.doi.org/10.1103/PhysRevA.92.062709
---------- CHICAGO ----------
Gravielle, M.S., Miraglia, J.E. "Influence of beam collimation on fast-atom diffraction studied via a semiquantum approach" . Physical Review A - Atomic, Molecular, and Optical Physics 92, no. 6 (2015).http://dx.doi.org/10.1103/PhysRevA.92.062709
---------- MLA ----------
Gravielle, M.S., Miraglia, J.E. "Influence of beam collimation on fast-atom diffraction studied via a semiquantum approach" . Physical Review A - Atomic, Molecular, and Optical Physics, vol. 92, no. 6, 2015.http://dx.doi.org/10.1103/PhysRevA.92.062709
---------- VANCOUVER ----------
Gravielle, M.S., Miraglia, J.E. Influence of beam collimation on fast-atom diffraction studied via a semiquantum approach. Phys Rev A. 2015;92(6).http://dx.doi.org/10.1103/PhysRevA.92.062709
