Amorphization kinetics under swift heavy ion irradiation: A cumulative overlapping-track approach

Garcı́a, Gustavo; Rivera, Alejandro; Crespillo, Miguel L.; Gordillo, N.; Olivares, J.; Agulló‐López, F.

doi:10.1016/j.nimb.2010.12.073

Cited by 29 publications

(28 citation statements)

References 26 publications

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“…Here, we summarize the main conclusions and formulae for the recently proposed track-overlap model [32]. In this approach we have assumed that every impact generates a cylindrical track consisting of an inner amorphous core of cross-section a, surrounded by a homogeneous defective halo of area h in the transversal plane (Fig.…”

Section: Track-overlap Modelmentioning

confidence: 99%

“…Moreover, the structure of damage by swift ions appears better defined and has sharper amorphous-crystalline boundaries, which is more suitable for the model. Then, the general formula giving the total amorphous area S as a function of impact density <j> (fluence) is [32]:…”

Section: Track-overlap Modelmentioning

confidence: 99%

“…Therefore, one expects that the kinetics of accumulation provides relevant clues to understand the structure of individual tracks. We have recently proposed a general cumulative scheme to describe damage [32], which is independent of the particular mechanism causing bond breaking and defect formation. It assumes that every impact generates a track consisting of an amorphous core of cross-section a surrounded by a halo of area h. Moreover, we assumed that the superimpositionofa fixed number JV of halos results in amorphization.…”

Section: Introductionmentioning

confidence: 99%

“…It assumes that every impact generates a track consisting of an amorphous core of cross-section a surrounded by a halo of area h. Moreover, we assumed that the superimpositionofa fixed number JV of halos results in amorphization. The model was applied to fit some data for LiNb0 3 [32] and the results were very stimulating. In addition, a Monte Carlo code based on such specific defect-creation model for LiNb0 3 has been able to simulate the morphology and kinetics of amorphization [33].…”

Section: Introductionmentioning

confidence: 99%

“…Although some rather similar studies have been reported [18,27], they are based on the concept of thermal spike and, consequently, they do not analyze the generation and accumulation of point defects that we consider a key point for a proper understanding of the amorphization process. Our experimental curves have been simulated with an Avrami-type kinetics as well as by the recently proposed track-overlap (TO) model [32]. For this latter case, the physical parameters {a, h and JV) have been determined as a function of the electronic stopping power S e .…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Kinetics of amorphization induced by swift heavy ions in α-quartz

Peña‐Rodríguez

Manzano-Santamaría

Rivera

et al. 2012

Journal of Nuclear Materials

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The kinetics of amorphization in crystalline Si0 2 (oi-quartz) under irradiation with swift heavy ions (0 +1 at 4 MeV, 0 +4 at 13 MeV, F +2 at 5 MeV, F +4 at 15 MeV, Cl +3 at 10 MeV, CI* 4 at 20 MeV, Br +5 at 15 and 25 MeV and Br +8 at 40 MeV) has been analyzed in this work with an Avrami-type law and also with a recently developed cumulative approach (track-overlap model). This latter model assumes a track morphology consisting of an amorphous core (area

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Section: Track-overlap Modelmentioning

confidence: 99%

Section: Track-overlap Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Kinetics of amorphization induced by swift heavy ions in α-quartz

Peña‐Rodríguez

Manzano-Santamaría

Rivera

et al. 2012

Journal of Nuclear Materials

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Alternative approaches to electronic damage by ion‐beam irradiation: Exciton models

Agulló‐López

Climent‐Font

Muñoz-Martı́n

et al. 2016

Physica Status Solidi (a)

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The paper briefly describes the main features of the damage produced by swift heavy ion (SHI) irradiation. After a short revision of the widely used thermal spike concept, it focuses on cumulative mechanisms of track formation which are alternative to those based on lattice melting (thermal spike models). These cumulative mechanisms rely on the production of point defects around the ion trajectory, and their accumulation up to a final lattice collapse or amorphization. As to the formation of point defects, the paper considers those mechanisms relying on direct local conversion of the excitation energy into atomic displacements (exciton models). A particular attention is given to processes based on the non-radiative recombination of excitons that have become self-trapped as a consequence of a strong electron-phonon interaction (STEs). These mechanisms, although operative under purely ionizing radiation in some dielectric materials, have been rarely invoked, so far, to discuss SHI damage. They are discussed in this paper together with relevant examples to materials such as Cu 3 N, alkali halides, SiO 2 , and LiNbO 3 .

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A coupled effect of nuclear and electronic energy loss on ion irradiation damage in lithium niobate

et al. 2016

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Understanding irradiation effects induced by elastic energy loss to atomic nuclei and inelastic energy loss to electrons in a crystal, as well as the coupled effect between them is a scientific challenge. Damage evolution of LiNbO 3 irradiated by 0.9 and 21 MeV Si ions at 300 K has been studied utilizing Rutherford backscattering spectrometry and channeling technique. During the low-energy ion irradiation process, damage accumulation produced due to elastic collisions is described utilizing a disorder accumulation model. Moreover, low electronic energy loss is shown to induce observable damage that increases with ion fluence. For the same electronic energy loss, velocity of the incident ion could affect the energy and spatial distribution of excited electron, and therefore effectively modify the diameter of the ion track.

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Amorphization kinetics under swift heavy ion irradiation: A cumulative overlapping-track approach

Cited by 29 publications

References 26 publications

Kinetics of amorphization induced by swift heavy ions in α-quartz

Kinetics of amorphization induced by swift heavy ions in α-quartz

Alternative approaches to electronic damage by ion‐beam irradiation: Exciton models

A coupled effect of nuclear and electronic energy loss on ion irradiation damage in lithium niobate

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