Optical Effects of Ion Implantation

Townsend, Peter; Chandler, Peter; Zhang, L.

doi:10.1017/cbo9780511599781

Cited by 372 publications

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“…The structural modifications induced by charged (or neutral) particles on materials [1][2][3] are a key issue to allow for the reliable operation of nuclear fission reactors and to minimize the deleterious effects associated to the storage of the nuclear radioactive waste [4,5]. The damage problem may be even more demanding for the future fusion reactors given the high neutron fluxes and temperatures reached during operation of the confined plasma [6] or the extreme power of laser pulses for inertial systems [7].…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%

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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“…Variety of luminescence techniques such as thermoluminescence, electroluminescence, cathodoluminescence, X-ray irradiation, and ion beam luminescence can be used for excitation of luminescence [6].…”

Section: Introductionmentioning

confidence: 99%

Optical and Structural Properties of Cu Doped ZnS Nanocrystals: Effect of Temperature and Concentration of Capping Agent

Hasanzadeh

2016

Acta Phys. Pol. A

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We have provided the Cu doped zinc sulfide (ZnS:Cu) nanoparticles using a wet chemical synthesis. In principle, the nanoparticles are provided by mixing the reactants in a double distilled water solvent. We have used the mercaptopropionic acid as the capping agent. We have obtained the physical properties of the nanoparticles using the methods: UV absorption, photoluminescence spectroscopy, and X-ray diffraction analysis. The average size of nanoparticles is obtained in the range 3-6 nm. In addition, the X-ray diffraction pattern of ZnS:Cu nanoparticles reveals a zinc-blende crystal structure at room temperature.

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“…It is well known [1,2] that elastic nuclear collisions between an incident ion-beam and a material constitutes a mechanism of energy losses (nuclear stopping power S") that is dominant at low energies (roughly, E < A MeV, with A the mass number). When the energy transferred to the target atom overcomes a certain value (displacement energy ED), the atom is ejected from its lattice site and point defects (Frenkel pairs) are generated [1,3].…”

Section: Introductionmentioning

confidence: 99%

“…When the energy transferred to the target atom overcomes a certain value (displacement energy ED), the atom is ejected from its lattice site and point defects (Frenkel pairs) are generated [1,3]. At sufficiently high fluences (in the range 10 15 -10 17 cm -2 ), defect clustering develops, and a quasi-amorphous layer develops monotonically at the end of the ion range, i.e., the region where the ions are implanted.…”

Section: Introductionmentioning

confidence: 99%

Recrystallization of amorphous nanotracks and uniform layers generated by swift-ion-beam irradiation in lithium niobate

et al. 2011

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The thermal annealing of amorphous tracks of nanometer-size diameter generated in lithium niobate (LiNbOs) by Bromine ions at 45 MeV, i.e., in the electronic stopping regime, has been investigated by RBS/C spectrometry in the temperature range from 250°C to 350°C. Relatively low fluences have been used (<10 12 cm -2 ) to produce isolated tracks. However, the possible effect of track overlapping has been investigated by varying the fluence between 3 x 10 11 cm -2 and 10 12 cm -2 . The annealing process follows a two-step kinetics. In a first stage (I) the track radius decreases linearly with the annealing time. It obeys an Arrhenius-type dependence on annealing temperature with activation energy around 1.5 eV. The second stage (II) operates after the track radius has decreased down to around 2.5 nm and shows a much lower radial velocity. The data for stage I appear consistent with a solid-phase epitaxial process that yields a constant recrystallization rate at the amorphouscrystalline boundary. HRTEM has been used to monitor the existence and the size of the annealed isolated tracks in the second stage. On the other hand, the thermal annealing of homogeneous (buried) amorphous layers has been investigated within the same temperature range, on samples irradiated with Fluorine at 20 MeV and fluences of ~10 14 cm -2 . Optical techniques are very suitable for this case and have been used to monitor the recrystallization of the layers. The annealing process induces a displacement of the crystallineamorphous boundary that is also linear with annealing time, and the recrystallization rates are consistent with those measured for tracks. The comparison of these data with those previously obtained for the heavily damaged (amorphous) layers produced by elastic nuclear collisions is summarily discussed.

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Optical Effects of Ion Implantation

Cited by 372 publications

References 0 publications

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

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

Optical and Structural Properties of Cu Doped ZnS Nanocrystals: Effect of Temperature and Concentration of Capping Agent

Recrystallization of amorphous nanotracks and uniform layers generated by swift-ion-beam irradiation in lithium niobate

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