Artículo
Archubi, C.D.; Abril, I.; Garcia-Molina, R.; Arista, N.R. "Barkas effect in the stopping power for ions with different ionization degrees" (2013) Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms. 316:88-93
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Abstract:
The Barkas effect in the electronic stopping power for dressed projectiles moving in a free electron gas is studied for a wide range of velocities v. The interaction of the projectile with the target is described using screened interaction potentials, which take into account the self screening due to the projectile bound electrons and the external screening produced by the target electron gas. The Barkas factor is obtained from a classical simulation of the scattering of the target electrons in the potential of the projectile and that of its antiparticle, following the transport cross section model. A large set of numerical simulations were made for different projectiles, degrees of ionization and velocities. We find that the Barkas factor increases at high energies with the number of projectile bound electrons, whereas its velocity dependence changes from the v-3 behavior for bare projectiles to a v-2 behavior for neutral ones. Interesting effects of curve crossings in the Barkas factor at different degrees of ionization as a function of the projectile velocity are observed. A simple scaling law for neutral and fully ionized projectiles is also derived. © 2013 Elsevier B.V. All rights reserved.
Registro:
| Documento: | Artículo |
| Título: | Barkas effect in the stopping power for ions with different ionization degrees |
| Autor: | Archubi, C.D.; Abril, I.; Garcia-Molina, R.; Arista, N.R. |
| Filiación: | Instituto de Astronomía y Física Del Espacio, C1428 Buenos Aires, Argentina Departament de Física Aplicada, Universitat d'Alacant, E-03080 Alacant, Spain Departamento de Física, Centro de Investigación en Óptica y Nanofísica, Universidad de Murcia, E 30100 Murcia, Spain Centro Atómico Bariloche and Instituto Balseiro, Comisión Nacional de Energía Atómica, 8400 Bariloche, Argentina |
| Palabras clave: | Atomic; Barkas; Collisions; Ions; Solids; Stopping; Atomic; Barkas; Collisions; Degrees of ionization; Electronic stopping power; Interaction potentials; Stopping; Transport cross-section; Computer simulation; Electron gas; Ionization; Ions; Laser produced plasmas; Solids; Velocity; Projectiles |
| Año: | 2013 |
| Volumen: | 316 |
| Página de inicio: | 88 |
| Página de fin: | 93 |
| DOI: | http://dx.doi.org/10.1016/j.nimb.2013.08.034 |
| Título revista: | Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms |
| Título revista abreviado: | Nucl Instrum Methods Phys Res Sect B |
| ISSN: | 0168583X |
| CODEN: | NIMBE |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0168583X_v316_n_p88_Archubi |
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Citas:
---------- APA ----------
Archubi, C.D., Abril, I., Garcia-Molina, R. & Arista, N.R. (2013) . Barkas effect in the stopping power for ions with different ionization degrees. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, 316, 88-93.http://dx.doi.org/10.1016/j.nimb.2013.08.034
---------- CHICAGO ----------
Archubi, C.D., Abril, I., Garcia-Molina, R., Arista, N.R. "Barkas effect in the stopping power for ions with different ionization degrees" . Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 316 (2013) : 88-93.http://dx.doi.org/10.1016/j.nimb.2013.08.034
---------- MLA ----------
Archubi, C.D., Abril, I., Garcia-Molina, R., Arista, N.R. "Barkas effect in the stopping power for ions with different ionization degrees" . Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 316, 2013, pp. 88-93.http://dx.doi.org/10.1016/j.nimb.2013.08.034
---------- VANCOUVER ----------
Archubi, C.D., Abril, I., Garcia-Molina, R., Arista, N.R. Barkas effect in the stopping power for ions with different ionization degrees. Nucl Instrum Methods Phys Res Sect B. 2013;316:88-93.http://dx.doi.org/10.1016/j.nimb.2013.08.034
