Effect of valence holes on swift heavy ion track formation in Al2O3

Autores
Terekhin, Pavel; Rymzhanov, R. A.; Gorbunov, S. A.; Medvedev, N. A.; Volkov, A. E.
Año de publicación
2015
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
This paper focuses on effects of electrons and valence holes on structure modifications in swift heavy ion (SHI) tracks in dielectrics. To investigate this problem a multiscale model is constructed which consists of (a) Monte Carlo modeling of a SHI penetration and secondary electron cascading; (b) molecular-kinetic approach for low-energy electrons spatial redistribution after finishing of ionization cascades; (c) molecular dynamics modeling of lattice excitation due to its coupling with the relaxing electron ensemble and subsequent atomic dynamics on picoseconds timescales. The model is applied to 167 MeV Xe ion irradiation of solid Al2O3. We found that lattice heating by excited electrons does not exceed ∼200 K, which is not sufficient to form an ion track observed in experiments. Structure transformations appear in the numerical simulations only when the excess energy accumulated in valence holes is taken into account.
Fil: Terekhin, Pavel. National Research Centre ‘Kurchatov Institute’; Rusia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Rymzhanov, R. A.. Joint Institute for Nuclear Research; Rusia
Fil: Gorbunov, S. A.. Russian Academy of Sciences; Rusia
Fil: Medvedev, N. A.. Deutsches Elektronen-Synchrotron; Alemania
Fil: Volkov, A. E.. National Research Centre ‘Kurchatov Institute’; Rusia. Joint Institute for Nuclear Research; Rusia. Russian Academy of Sciences; Rusia
Materia
Complex Dielectric Function
Dynamic Structure Factor
Molecular Dynamics
Monte-Carlo
Swift Heavy Ion
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/43030
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/43030
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Effect of valence holes on swift heavy ion track formation in Al2O3Terekhin, PavelRymzhanov, R. A.Gorbunov, S. A.Medvedev, N. A.Volkov, A. E.Complex Dielectric FunctionDynamic Structure FactorMolecular DynamicsMonte-CarloSwift Heavy Ionhttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1This paper focuses on effects of electrons and valence holes on structure modifications in swift heavy ion (SHI) tracks in dielectrics. To investigate this problem a multiscale model is constructed which consists of (a) Monte Carlo modeling of a SHI penetration and secondary electron cascading; (b) molecular-kinetic approach for low-energy electrons spatial redistribution after finishing of ionization cascades; (c) molecular dynamics modeling of lattice excitation due to its coupling with the relaxing electron ensemble and subsequent atomic dynamics on picoseconds timescales. The model is applied to 167 MeV Xe ion irradiation of solid Al2O3. We found that lattice heating by excited electrons does not exceed ∼200 K, which is not sufficient to form an ion track observed in experiments. Structure transformations appear in the numerical simulations only when the excess energy accumulated in valence holes is taken into account.Fil: Terekhin, Pavel. National Research Centre ‘Kurchatov Institute’; Rusia. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaFil: Rymzhanov, R. A.. Joint Institute for Nuclear Research; RusiaFil: Gorbunov, S. A.. Russian Academy of Sciences; RusiaFil: Medvedev, N. A.. Deutsches Elektronen-Synchrotron; AlemaniaFil: Volkov, A. E.. National Research Centre ‘Kurchatov Institute’; Rusia. Joint Institute for Nuclear Research; Rusia. Russian Academy of Sciences; RusiaElsevier2015-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/43030Terekhin, Pavel; Rymzhanov, R. A.; Gorbunov, S. A.; Medvedev, N. A.; Volkov, A. E.; Effect of valence holes on swift heavy ion track formation in Al2O3; Elsevier; Beam Interactions with Materials and Atoms; 354; 7-2015; 200-2040168-583XCONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0168583X15000919info:eu-repo/semantics/altIdentifier/doi/10.1016/j.nimb.2015.01.069info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:02:26Zoai:ri.conicet.gov.ar:11336/43030instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:02:27.139CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effect of valence holes on swift heavy ion track formation in Al2O3
title Effect of valence holes on swift heavy ion track formation in Al2O3
spellingShingle Effect of valence holes on swift heavy ion track formation in Al2O3
Terekhin, Pavel
Complex Dielectric Function
Dynamic Structure Factor
Molecular Dynamics
Monte-Carlo
Swift Heavy Ion
title_short Effect of valence holes on swift heavy ion track formation in Al2O3
title_full Effect of valence holes on swift heavy ion track formation in Al2O3
title_fullStr Effect of valence holes on swift heavy ion track formation in Al2O3
title_full_unstemmed Effect of valence holes on swift heavy ion track formation in Al2O3
title_sort Effect of valence holes on swift heavy ion track formation in Al2O3
dc.creator.none.fl_str_mv Terekhin, Pavel
Rymzhanov, R. A.
Gorbunov, S. A.
Medvedev, N. A.
Volkov, A. E.
author Terekhin, Pavel
author_facet Terekhin, Pavel
Rymzhanov, R. A.
Gorbunov, S. A.
Medvedev, N. A.
Volkov, A. E.
author_role author
author2 Rymzhanov, R. A.
Gorbunov, S. A.
Medvedev, N. A.
Volkov, A. E.
author2_role author
author
author
author
dc.subject.none.fl_str_mv Complex Dielectric Function
Dynamic Structure Factor
Molecular Dynamics
Monte-Carlo
Swift Heavy Ion
topic Complex Dielectric Function
Dynamic Structure Factor
Molecular Dynamics
Monte-Carlo
Swift Heavy Ion
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv This paper focuses on effects of electrons and valence holes on structure modifications in swift heavy ion (SHI) tracks in dielectrics. To investigate this problem a multiscale model is constructed which consists of (a) Monte Carlo modeling of a SHI penetration and secondary electron cascading; (b) molecular-kinetic approach for low-energy electrons spatial redistribution after finishing of ionization cascades; (c) molecular dynamics modeling of lattice excitation due to its coupling with the relaxing electron ensemble and subsequent atomic dynamics on picoseconds timescales. The model is applied to 167 MeV Xe ion irradiation of solid Al2O3. We found that lattice heating by excited electrons does not exceed ∼200 K, which is not sufficient to form an ion track observed in experiments. Structure transformations appear in the numerical simulations only when the excess energy accumulated in valence holes is taken into account.
Fil: Terekhin, Pavel. National Research Centre ‘Kurchatov Institute’; Rusia. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Fil: Rymzhanov, R. A.. Joint Institute for Nuclear Research; Rusia
Fil: Gorbunov, S. A.. Russian Academy of Sciences; Rusia
Fil: Medvedev, N. A.. Deutsches Elektronen-Synchrotron; Alemania
Fil: Volkov, A. E.. National Research Centre ‘Kurchatov Institute’; Rusia. Joint Institute for Nuclear Research; Rusia. Russian Academy of Sciences; Rusia
description This paper focuses on effects of electrons and valence holes on structure modifications in swift heavy ion (SHI) tracks in dielectrics. To investigate this problem a multiscale model is constructed which consists of (a) Monte Carlo modeling of a SHI penetration and secondary electron cascading; (b) molecular-kinetic approach for low-energy electrons spatial redistribution after finishing of ionization cascades; (c) molecular dynamics modeling of lattice excitation due to its coupling with the relaxing electron ensemble and subsequent atomic dynamics on picoseconds timescales. The model is applied to 167 MeV Xe ion irradiation of solid Al2O3. We found that lattice heating by excited electrons does not exceed ∼200 K, which is not sufficient to form an ion track observed in experiments. Structure transformations appear in the numerical simulations only when the excess energy accumulated in valence holes is taken into account.
publishDate 2015
dc.date.none.fl_str_mv 2015-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/43030
Terekhin, Pavel; Rymzhanov, R. A.; Gorbunov, S. A.; Medvedev, N. A.; Volkov, A. E.; Effect of valence holes on swift heavy ion track formation in Al2O3; Elsevier; Beam Interactions with Materials and Atoms; 354; 7-2015; 200-204
0168-583X
CONICET Digital
CONICET
url http://hdl.handle.net/11336/43030
identifier_str_mv Terekhin, Pavel; Rymzhanov, R. A.; Gorbunov, S. A.; Medvedev, N. A.; Volkov, A. E.; Effect of valence holes on swift heavy ion track formation in Al2O3; Elsevier; Beam Interactions with Materials and Atoms; 354; 7-2015; 200-204
0168-583X
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0168583X15000919
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.nimb.2015.01.069
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.22299

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