Atomistic two-temperature modelling of ion track formation in silicon dioxide

被引：19
作者：
Leino, A. A. [1 ,2 ]
Daraszewicz, S. L. [3 ,4 ]
Pakarinen, O. H. [1 ,2 ]
Nordlund, K. [1 ,2 ]
Djurabekova, F. [1 ,2 ]
机构：
[1] Univ Helsinki, Helsinki Inst Phys, FI-00014 Helsinki, Finland
[2] Univ Helsinki, Dept Phys, FI-00014 Helsinki, Finland
[3] UCL, Dept Phys & Astron, London WC1E 6BT, England
[4] UCL, London Ctr Nanotechnol, London WC1E 6BT, England
来源：
EPL | 2015年 / 110卷 / 01期
基金：
英国工程与自然科学研究理事会; 芬兰科学院;
关键词：
SWIFT HEAVY-IONS; THERMAL SPIKE DESCRIPTION; ELECTRON-GAS; INORGANIC INSULATORS; SIO2; IRRADIATION; TEMPERATURES; SIMULATIONS; EXPLOSION; MECHANISM;
D O I：
10.1209/0295-5075/110/16004
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We study swift-heavy-ion track formation in a-quartz using the two-temperature molecular dynamics (2T-MD) model realised as a concurrent multiscale scheme. We compare the simulated track radii to the existing experimental ones obtained from small-angle X-ray scattering and Rutherford backscattering experiments. The 2T-MD model provides an explanation of the origin of the track radii saturation at high electronic stopping power. Furthermore, we study the track structure and show that defects formed outside the region of density fluctuations after a swift-heavy-ion impact may explain the conflicting track radii produced by the two experimental techniques. Copyright (C) EPLA, 2015
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页数：5
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共 53 条
  • [1] SAXS investigations of the morphology of swift heavy ion tracks in α-quartz
    Afra, B.
    Rodriguez, M. D.
    Trautmann, C.
    Pakarinen, O. H.
    Djurabekova, F.
    Nordlund, K.
    Bierschenk, T.
    Giulian, R.
    Ridgway, M. C.
    Rizza, G.
    Kirby, N.
    Toulemonde, M.
    Kluth, P.
    [J]. JOURNAL OF PHYSICS-CONDENSED MATTER, 2013, 25 (04)
  • [2] Electron Cooling and Debye-Waller Effect in Photoexcited Bismuth
    Arnaud, B.
    Giret, Y.
    [J]. PHYSICAL REVIEW LETTERS, 2013, 110 (01)
  • [3] SPACE-TIME OBSERVATION OF AN ELECTRON-GAS IN SIO2
    AUDEBERT, P
    DAGUZAN, P
    DOSSANTOS, A
    GAUTHIR, JC
    GEINDRE, JP
    GUIZARD, S
    HAMONIAUX, G
    KRASTEV, K
    MARTIN, P
    PETITE, G
    ANTONETTI, A
    [J]. PHYSICAL REVIEW LETTERS, 1994, 73 (14) : 1990 - 1993
  • [4] Channeling characterization of defects in silicon: an atomistic approach
    Bianconi, M
    Albertazzi, E
    Balboni, S
    Colombo, L
    Lulli, G
    Satta, A
    [J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2005, 230 : 185 - 192
  • [5] Molecular dynamics simulations of Coulomb explosion
    Bringa, EM
    [J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2003, 209 : 1 - 8
  • [6] Coulomb explosion and thermal spikes
    Bringa, EM
    Johnson, RE
    [J]. PHYSICAL REVIEW LETTERS, 2002, 88 (16) : 4 - 165501
  • [7] FEMTOSECOND ROOM-TEMPERATURE MEASUREMENT OF THE ELECTRON-PHONON COUPLING CONSTANT-LAMBDA IN METALLIC SUPERCONDUCTORS
    BRORSON, SD
    KAZEROONIAN, A
    MOODERA, JS
    FACE, DW
    CHENG, TK
    IPPEN, EP
    DRESSELHAUS, MS
    DRESSELHAUS, G
    [J]. PHYSICAL REVIEW LETTERS, 1990, 64 (18) : 2172 - 2175
  • [8] GROUND-STATE OF THE ELECTRON-GAS BY A STOCHASTIC METHOD
    CEPERLEY, DM
    ALDER, BJ
    [J]. PHYSICAL REVIEW LETTERS, 1980, 45 (07) : 566 - 569
  • [9] Hybrid particle-in-cell/molecular dynamics simulation of swift-ion tracks in LiF
    Cherednikov, Yaroslav
    Sun, Si Neng
    Urbassek, Herbert M.
    [J]. PHYSICAL REVIEW B, 2013, 87 (24)
  • [10] Behavior of crystalline silicon under huge electronic excitations: A transient thermal spike description
    Chettah, A.
    Kucal, H.
    Wang, Z. G.
    Kac, M.
    Meftah, A.
    Toulemonde, M.
    [J]. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2009, 267 (16) : 2719 - 2724
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