Nuclear and Physical Properties of Dielectrics under Neutron Irradiation in Fast (BN-600) and Fusion (DEMO-S) Reactors

Blokhin, D. A.; Чернов, В. М.; Blokhin, A. I.

doi:10.1134/s1063778817070031

Cited by 4 publications

(3 citation statements)

References 3 publications

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“…Earlier, thermoluminescent characteristics have been extensively studied in nominally pure Al 2 O 3 single crystals (see [37] and references therein) as well as dosimetric (anion deficient) Al 2 O 3 :C [ 3,4 ] exposed to various types of ionizing radiation (UV-light, Xor gamma-rays), which is unable to produce structural damage in α-Al 2 O 3 . In these studies, only TSL up to ~600 K, i.e.…”

Section: Resultsmentioning

confidence: 99%

“…Aluminium oxide ( α-Al 2 O 3 ) possesses a variety of fascinating properties allowing its use for different technological applications. In particular, because of high resistance to fast neutrons, rather low swelling and ability to maintain mechanical and electrical integrity, α-Al 2 O 3 single crystals and polycrystalline transparent ceramics are widely used for fission-based energetics and are in the list of promising diagnostics/window materials for deuterium-tritium fusion reactors [1][2][3] . On the other hand, a specially treated alumina (so-called anion-deficient α-Al 2 O 3 ) is the basis of highly sensitive luminescent detectors of ionizing radiation (see, e.g., [ 4,5 ] and references therein).…”

Section: Introductionmentioning

confidence: 99%

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Thermal annealing and transformation of dimer F centers in neutron-irradiated Al2O3 single crystals

Shablonin

Попов

Prieditis

et al. 2021

Journal of Nuclear Materials

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The precise study of the thermal annealing of the F 2-type dimer defects, being under discussion in the literature for a long time and responsible for the number of absorption bands below 4.5 eV, has been performed in corundum single crystals irradiated by fast neutrons with a fluence of 6.9 × 10 18 n /cm 2. The Gaussian components of the radiation-induced optical absorption with the maxima at 4.08, 3.45 and 2.75 eV have been considered as a measure of the F 2 , F + 2 and F 2+ 2 centers, respectively. In contrast to the F and F + centers, the concentration of which continuously decreases at the sample heating up to 1100 K, the concentration of dimer defects with different charge states passes the increasing stages above 500 K starting from the F 2+ 2 centers. The tentative mechanisms of such rise of the F 2+ 2 centers as well as of the subsequent transformation/rise of dimer centers, F 2+ 2 → F + 2 → F 2 at 650-800 K are considered. The possible sources of carriers needed for the recharging of dimer centers are also analysed on the basis of thermally stimulated luminescence measurements up to ~850 K.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Thermal annealing and transformation of dimer F centers in neutron-irradiated Al2O3 single crystals

Shablonin

Попов

Prieditis

et al. 2021

Journal of Nuclear Materials

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“…High quality crystalline Al 2 O 3 is extensively used as the promising diagnostics/window materials for deuterium-tritium fusion reactors due to its high resistance to rapid neutrons and capacity to preserve mechanical and electrical integrity [30][31][32]. For instance, highly sensitive luminescent ionizing radiation detectors are built on specifically treated alumina [33,34].…”

Section: Introductionmentioning

confidence: 99%

The Interrelation of Synthesis Conditions and Wettability Properties of the Porous Anodic Alumina Membranes

Тишкевич

Vorobjova

Bondaruk³

et al. 2022

Nanomaterials

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The results of studies on the wettability properties and preparation of porous anodic alumina (PAA) membranes with a 3.3 ± 0.2 μm thickness and a variety of pore sizes are presented in this article. The wettability feature results, as well as the fabrication processing characteristics and morphology, are presented. The microstructure effect of these surfaces on wettability properties is analyzed in comparison to outer PAA surfaces. The interfacial contact angle was measured for amorphous PAA membranes as-fabricated and after a modification technique (pore widening), with pore sizes ranging from 20 to 130 nm. Different surface morphologies of such alumina can be obtained by adjusting synthesis conditions, which allows the surface properties to change from hydrophilic (contact angle is approximately 13°) to hydrophobic (contact angle is 100°). This research could propose a new method for designing functional surfaces with tunable wettability. The potential applications of ordinary alumina as multifunctional films are demonstrated.

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EPR-active dimer centers with S=1 in α-Al2O3 single crystals irradiated by fast neutrons

Seeman

Попов

Shablonin

et al. 2022

Journal of Nuclear Materials

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Nuclear and Physical Properties of Dielectrics under Neutron Irradiation in Fast (BN-600) and Fusion (DEMO-S) Reactors

Cited by 4 publications

References 3 publications

Thermal annealing and transformation of dimer F centers in neutron-irradiated Al2O3 single crystals

Thermal annealing and transformation of dimer F centers in neutron-irradiated Al2O3 single crystals

The Interrelation of Synthesis Conditions and Wettability Properties of the Porous Anodic Alumina Membranes

EPR-active dimer centers with S=1 in α-Al2O3 single crystals irradiated by fast neutrons

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