Swift heavy ion track formation in SrTiO<sub>3</sub>and TiO<sub>2</sub>under random, channeling and near-channeling conditions

Karlušić, Marko; Jakšić, Milko; Lebius, H.; Ban-d’Etat, B.; Wilhelm, R.; Heller, R.; Schleberger, M.

doi:10.1088/1361-6463/aa678c

Cited by 27 publications

(26 citation statements)

References 74 publications

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“… 18 , but agrees with the S eth (10 keV nm −1 ) reported by Karlusic et al . 19 . Many studies have reported that ion track radius increases and S eth decreases when the irradiation is performed at lower ion velocity 20 – 22 .…”

Section: Resultsmentioning

confidence: 99%

Sensitivity of Anatase and Rutile Phases of TiO2 to ion irradiation: Examination of the applicability of Coulomb Explosion and Thermal Spike Models

Rath

Dash

Benyagoub

et al. 2018

Sci Rep

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Sensitivity of the anatase and rutile phases of titanium dioxide to Swift Heavy Ion (SHI) irradiation was experimentally probed and compared with the predictions of the Coulomb explosion, analytical and inelastic thermal spike models of ion-matter interaction. Conforming to the predictions of all these models, our study indicated higher sensitivity of anatase to these ions than the rutile phase. A detailed examination however revealed that Coulomb explosion model cannot explain either the nature of variation of the interaction cross section of SHI with the energy deposited by these ions, Se to the target electrons, or the relative values of the threshold electronic energy loss, Seth of anatase and rutile. The analytical thermal spike (a-TS) model, using the available physicochemical data for this oxide, predicted that tracks cannot form either in anatase or in rutile by 297 MeV and 511 MeV Ni ions, while inelastic thermal spike (i-TS) model predicted formation of ion tracks by 297 MeV Ni ions and their absence with 511 MeV Ni ions in both anatase and rutile. Our observation agreed with the predictions of i-TS model albeit with a difference in the radius of the tracks. In addition, we observed halo of defect ridden crystalline region of much larger radius around the ion track. Interestingly, the radius of the halo scales with the velocity of the ions, which is opposite to the conventionally observed velocity effect.

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Section: Resultsmentioning

confidence: 99%

Sensitivity of Anatase and Rutile Phases of TiO2 to ion irradiation: Examination of the applicability of Coulomb Explosion and Thermal Spike Models

Rath

Dash

Benyagoub

et al. 2018

Sci Rep

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“…1d). Logically, the effective radius deduced from RBS/C, which assumes that the tracks have identical size and cylindrical symmetry 40 , is expected to be much smaller than our calculation by i-TS model. However, it is interesting that the deduced track size from RBS/C 40 agrees well with the present i-TS model prediction ( Fig.…”

Section: Why Is the Deduced Track Size By Rbs/c Close To The I-ts Modmentioning

confidence: 57%

“…For the radius of 4.3 nm, superheating melting temperature T S is determined as 2900 K with the heating rate ~10 15 K/s. The calculated T S is larger than the equilibrium melting point (2130 K) by a factor of 1.36, consistent with the calculated result by Rethfeld et al50 , where transient thermal melting was considered as homogeneous nucleation of the liquid phase in a femtosecond laser-excited bulk.The experimental radii from previous work23,36,40,51,52 and the present work are compared with i-TS calculations within superheating scenario (Fig. 5).…”

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confidence: 85%

Fine structure of swift heavy ion track in rutile TiO2

Zhai

Nan

et al. 2019

Nuclear Instruments and Methods in Physics Research Section B:

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Understanding the formation of latent track by energetic heavy ions is important for the fields of nuclear waste disposal, nuclear fuel and modification of materials.However, the details of the mechanism for the track formation in non-amorphizable materials are still being debated. Here, we report on the fine structure formation of latent tracks, which changes from cylinder to sandglass as a function of the ion-penetrating length, in a typical non-amorphizable material, rutile TiO 2 . Based on inelastic thermal spike model, we show that the outflow of molten phase produces the hillocks on surface and the void-rich zone near surface, while at a deep depth, the lack of outflow and the rapid recrystallization result in the absence of tracks. Moreover, the morphology of tracks depends on the velocity of molten phase outflow and recrystallization. Our perspective provides a new interpretation in the radiation damage for both amorphizable and non-amorphizable materials.

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“…For example, it is generally accepted that electronic excitations in quartz can result in exciton self-trapping that can lead to structural changes upon their annihilation [ 1 , 4 , 5 ]. While the process causing damage is not clear (nuclear stopping power or self-trapped exciton mechanism), we show in Figure 2 c,d that the presented in situ RBS/c set-up enables detailed measurements of the channeling and near-channeling effects influencing ion track formation [ 22 , 49 , 50 ].…”

Section: Experiments and Resultsmentioning

confidence: 99%

“…Often it is possible to pinpoint exactly the threshold for ion track formation. Practical considerations like limited availability of the beamtime can also play a significant role at large facilities, thus, it is advantageous for complementary investigations at lower energies to be outsourced elsewhere, as documented in our own research [ 10 , 17 , 18 , 19 , 20 , 21 , 22 ]. SHI applications can benefit from this also, for example, hadron therapy using carbon ions typically requires ~100 MeV beams in order to reach the targeted volume.…”

Section: Introductionmentioning

confidence: 99%

Monitoring Ion Track Formation Using In Situ RBS/c, ToF-ERDA, and HR-PIXE

et al. 2017

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Abstract:The aim of this work is to investigate the feasibility of ion beam analysis techniques for monitoring swift heavy ion track formation. First, the use of the in situ Rutherford backscattering spectrometry in channeling mode to observe damage build-up in quartz SiO 2 after MeV heavy ion irradiation is demonstrated. Second, new results of the in situ grazing incidence time-of-flight elastic recoil detection analysis used for monitoring the surface elemental composition during ion tracks formation in various materials are presented. Ion tracks were found on SrTiO 3 , quartz SiO 2 , a-SiO 2 , and muscovite mica surfaces by atomic force microscopy, but in contrast to our previous studies on GaN and TiO 2 , surface stoichiometry remained unchanged. Third, the usability of high resolution particle induced X-ray spectroscopy for observation of electronic dynamics during early stages of ion track formation is shown.

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Swift heavy ion track formation in SrTiO₃and TiO₂under random, channeling and near-channeling conditions

Cited by 27 publications

References 74 publications

Sensitivity of Anatase and Rutile Phases of TiO2 to ion irradiation: Examination of the applicability of Coulomb Explosion and Thermal Spike Models

Sensitivity of Anatase and Rutile Phases of TiO2 to ion irradiation: Examination of the applicability of Coulomb Explosion and Thermal Spike Models

Fine structure of swift heavy ion track in rutile TiO2

Monitoring Ion Track Formation Using In Situ RBS/c, ToF-ERDA, and HR-PIXE

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Swift heavy ion track formation in SrTiO3and TiO2under random, channeling and near-channeling conditions

Cited by 27 publications

References 74 publications

Sensitivity of Anatase and Rutile Phases of TiO2 to ion irradiation: Examination of the applicability of Coulomb Explosion and Thermal Spike Models

Sensitivity of Anatase and Rutile Phases of TiO2 to ion irradiation: Examination of the applicability of Coulomb Explosion and Thermal Spike Models

Fine structure of swift heavy ion track in rutile TiO2

Monitoring Ion Track Formation Using In Situ RBS/c, ToF-ERDA, and HR-PIXE

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Swift heavy ion track formation in SrTiO₃and TiO₂under random, channeling and near-channeling conditions