Density evolution in formation of swift heavy ion tracks in insulators

Research output: Contribution to journalConference articleScientificpeer-review

Abstract

Swift heavy ion irradiation leaves a latent ion track around the ion path in many materials. Here we report computational molecular dynamics (MD) simulation results on track formation in several insulating materials, quartz, amorphous silica (a-SiO2), zinc oxide and diamond, concentrating especially in mass transport leading to density variations in the track volume during the initial stages of track formation. These details are largely unobservable in experiments due to the picosecond timescale and very local nature, and also in many computational models of track formation. Earlier a low-density core – high-density shell fine structure has been observed in latent tracks in amorphous silica, and here we study if other materials than silica show similar behavior. The results highlight the dynamical nature of track formation, that includes competing effects of heat and mass transport, rapid quenching of the heated area and recrystallization.
Original languageEnglish
JournalNuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
Volume268
Issue number19
Pages (from-to)3163
Number of pages4
ISSN0168-583X
DOIs
Publication statusPublished - 2010
MoE publication typeA4 Article in conference proceedings
EventUnknown host publication - , Netherlands
Duration: 1 Jan 1800 → …

Fields of Science

  • 114 Physical sciences

Cite this

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title = "Density evolution in formation of swift heavy ion tracks in insulators",
abstract = "Swift heavy ion irradiation leaves a latent ion track around the ion path in many materials. Here we report computational molecular dynamics (MD) simulation results on track formation in several insulating materials, quartz, amorphous silica (a-SiO2), zinc oxide and diamond, concentrating especially in mass transport leading to density variations in the track volume during the initial stages of track formation. These details are largely unobservable in experiments due to the picosecond timescale and very local nature, and also in many computational models of track formation. Earlier a low-density core – high-density shell fine structure has been observed in latent tracks in amorphous silica, and here we study if other materials than silica show similar behavior. The results highlight the dynamical nature of track formation, that includes competing effects of heat and mass transport, rapid quenching of the heated area and recrystallization.",
keywords = "114 Physical sciences",
author = "Pakarinen, {Olli Heikki} and Flyura Djurabekova and Kai Nordlund",
note = "Volume: 268 Host publication title: 15th International Conference on Radiation Effects in Insulators (REI) Proceeding volume:",
year = "2010",
doi = "10.1016/j.nimb.2010.05.079",
language = "English",
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issn = "0168-583X",
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TY - JOUR

T1 - Density evolution in formation of swift heavy ion tracks in insulators

AU - Pakarinen, Olli Heikki

AU - Djurabekova, Flyura

AU - Nordlund, Kai

N1 - Volume: 268 Host publication title: 15th International Conference on Radiation Effects in Insulators (REI) Proceeding volume:

PY - 2010

Y1 - 2010

N2 - Swift heavy ion irradiation leaves a latent ion track around the ion path in many materials. Here we report computational molecular dynamics (MD) simulation results on track formation in several insulating materials, quartz, amorphous silica (a-SiO2), zinc oxide and diamond, concentrating especially in mass transport leading to density variations in the track volume during the initial stages of track formation. These details are largely unobservable in experiments due to the picosecond timescale and very local nature, and also in many computational models of track formation. Earlier a low-density core – high-density shell fine structure has been observed in latent tracks in amorphous silica, and here we study if other materials than silica show similar behavior. The results highlight the dynamical nature of track formation, that includes competing effects of heat and mass transport, rapid quenching of the heated area and recrystallization.

AB - Swift heavy ion irradiation leaves a latent ion track around the ion path in many materials. Here we report computational molecular dynamics (MD) simulation results on track formation in several insulating materials, quartz, amorphous silica (a-SiO2), zinc oxide and diamond, concentrating especially in mass transport leading to density variations in the track volume during the initial stages of track formation. These details are largely unobservable in experiments due to the picosecond timescale and very local nature, and also in many computational models of track formation. Earlier a low-density core – high-density shell fine structure has been observed in latent tracks in amorphous silica, and here we study if other materials than silica show similar behavior. The results highlight the dynamical nature of track formation, that includes competing effects of heat and mass transport, rapid quenching of the heated area and recrystallization.

KW - 114 Physical sciences

U2 - 10.1016/j.nimb.2010.05.079

DO - 10.1016/j.nimb.2010.05.079

M3 - Conference article

VL - 268

SP - 3163

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

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

SN - 0168-583X

IS - 19

ER -