Structural analysis of simulated swift heavy ion tracks in quartz

Aleksi A. Leino; Szymon L. Daraszewicz; Olli H. Pakarinen; Flyura Djurabekova; Kai Nordlund; Boshra Afra; Patrick Kluth

doi:10.1016/j.nimb.2013.10.075

Structural analysis of simulated swift heavy ion tracks in quartz

Aleksi A. Leino^*, Szymon L. Daraszewicz, Olli H. Pakarinen, Flyura Djurabekova, Kai Nordlund, Boshra Afra, Patrick Kluth

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

21 Citations (Scopus)

Abstract

Swift heavy ions (SHI), of specific kinetic energies in the excess of 1 MeV/u, can create cylindrical regions of structural transformation in SiO ₂ targets, also known as SHI tracks. Recent measurements of the track cross-sections in α-quartz show significant and consistent discrepancies across different experimental techniques used. In particular, the track radii obtained from channelling experiments based on the Rutherford Backscattering Spectrometry (RBS-c) method increase monotonically with the electronic stopping power, whereas the track radii obtained from the Small Angle X-ray scattering (SAXS) saturate past a certain stopping power threshold. We perform a systematic study of the structure of the α-quartz tracks obtained from the molecular dynamics (MD) simulations incorporating a time-dependent energy deposition based on the inelastic thermal spike model, which allows us to discuss the possible origins of these experimental discrepancies.

Original language	English
Pages (from-to)	289-292
Number of pages	4
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	326
DOIs	https://doi.org/10.1016/j.nimb.2013.10.075
Publication status	Published - 1 May 2014

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@article{5604bf3e9ac543909cd5436ac828da68,

title = "Structural analysis of simulated swift heavy ion tracks in quartz",

abstract = "Swift heavy ions (SHI), of specific kinetic energies in the excess of 1 MeV/u, can create cylindrical regions of structural transformation in SiO 2 targets, also known as SHI tracks. Recent measurements of the track cross-sections in α-quartz show significant and consistent discrepancies across different experimental techniques used. In particular, the track radii obtained from channelling experiments based on the Rutherford Backscattering Spectrometry (RBS-c) method increase monotonically with the electronic stopping power, whereas the track radii obtained from the Small Angle X-ray scattering (SAXS) saturate past a certain stopping power threshold. We perform a systematic study of the structure of the α-quartz tracks obtained from the molecular dynamics (MD) simulations incorporating a time-dependent energy deposition based on the inelastic thermal spike model, which allows us to discuss the possible origins of these experimental discrepancies.",

keywords = "Ion irradiation, Ion tracks, Molecular dynamics, Quartz, Swift heavy ions",

author = "Leino, {Aleksi A.} and Daraszewicz, {Szymon L.} and Pakarinen, {Olli H.} and Flyura Djurabekova and Kai Nordlund and Boshra Afra and Patrick Kluth",

year = "2014",

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doi = "10.1016/j.nimb.2013.10.075",

language = "English",

volume = "326",

pages = "289--292",

journal = "Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms",

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TY - JOUR

T1 - Structural analysis of simulated swift heavy ion tracks in quartz

AU - Leino, Aleksi A.

AU - Daraszewicz, Szymon L.

AU - Pakarinen, Olli H.

AU - Djurabekova, Flyura

AU - Nordlund, Kai

AU - Afra, Boshra

AU - Kluth, Patrick

PY - 2014/5/1

Y1 - 2014/5/1

N2 - Swift heavy ions (SHI), of specific kinetic energies in the excess of 1 MeV/u, can create cylindrical regions of structural transformation in SiO 2 targets, also known as SHI tracks. Recent measurements of the track cross-sections in α-quartz show significant and consistent discrepancies across different experimental techniques used. In particular, the track radii obtained from channelling experiments based on the Rutherford Backscattering Spectrometry (RBS-c) method increase monotonically with the electronic stopping power, whereas the track radii obtained from the Small Angle X-ray scattering (SAXS) saturate past a certain stopping power threshold. We perform a systematic study of the structure of the α-quartz tracks obtained from the molecular dynamics (MD) simulations incorporating a time-dependent energy deposition based on the inelastic thermal spike model, which allows us to discuss the possible origins of these experimental discrepancies.

AB - Swift heavy ions (SHI), of specific kinetic energies in the excess of 1 MeV/u, can create cylindrical regions of structural transformation in SiO 2 targets, also known as SHI tracks. Recent measurements of the track cross-sections in α-quartz show significant and consistent discrepancies across different experimental techniques used. In particular, the track radii obtained from channelling experiments based on the Rutherford Backscattering Spectrometry (RBS-c) method increase monotonically with the electronic stopping power, whereas the track radii obtained from the Small Angle X-ray scattering (SAXS) saturate past a certain stopping power threshold. We perform a systematic study of the structure of the α-quartz tracks obtained from the molecular dynamics (MD) simulations incorporating a time-dependent energy deposition based on the inelastic thermal spike model, which allows us to discuss the possible origins of these experimental discrepancies.

KW - Ion irradiation

KW - Ion tracks

KW - Molecular dynamics

KW - Quartz

KW - Swift heavy ions

UR - http://www.scopus.com/inward/record.url?scp=84899435318&partnerID=8YFLogxK

U2 - 10.1016/j.nimb.2013.10.075

DO - 10.1016/j.nimb.2013.10.075

M3 - Article

SN - 0168-583X

VL - 326

SP - 289

EP - 292

JO - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

JF - Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms

ER -

Structural analysis of simulated swift heavy ion tracks in quartz

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