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dc.contributor.author
Archubi, Claudio Darío
dc.contributor.author
Abril, Isabel
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García Molina, Rafael
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Arista, Nestor Ricardo
dc.date.available
2015-06-16T21:17:23Z
dc.date.issued
2013-08
dc.identifier.citation
Archubi, Claudio Darío; Abril, Isabel; García Molina, Rafael; Arista, Nestor Ricardo; Barkas effect in the stopping power for ions with different ionization degrees; Elsevier Science Bv; Nuclear Instruments And Methods In Physics Research B - Beam Interactions With Materials And Atoms; 316; 8-2013; 88-93
dc.identifier.issn
0168-583X
dc.identifier.uri
http://hdl.handle.net/11336/790
dc.description.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 v3 behavior for bare projectiles to a v2 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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science Bv
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Barkas
dc.subject
Stopping Power
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Ionization
dc.subject.classification
Ciencias Naturales y Exactas
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Ciencias Físicas
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Física Atómica, Molecular y Química (física de Átomos y Moléculas Incluyendo Colisión, Interacción Con Radiación, Resonancia Magnética, Moessbauer Efecto.)
dc.title
Barkas effect in the stopping power for ions with different ionization degrees
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.journal.volume
316
dc.journal.pagination
88-93
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Archubi, Claudio Darío. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio(i); Argentina;
dc.description.fil
Fil: Abril, Isabel. Universidad de Alicante. Facultad de Ciencias; España;
dc.description.fil
Fil: García Molina, Rafael. Universidad de Murcia; España;
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Fil: Arista, Nestor Ricardo. Universidad Nacional de Cuyo; Argentina;
dc.journal.title
Nuclear Instruments And Methods In Physics Research B - Beam Interactions With Materials And Atoms
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.nimb.2013.08.034
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