LiF crystals irradiated with 150MeV Kr ions: Peculiarities of color center creation and thermal annealing

Dauletbekova, А.; Schwartz, K.; Sorokin, M.V.; Maniks, J.; Rusakova, A. V.; Koloberdin, M. V.; Аkilbekov, A.; Zdorovets, Maxim V.

doi:10.1016/j.nimb.2012.11.004

Cited by 19 publications

(16 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[33] and references therein). Just the migration/diffusion of a fluorine vacancy toward the F center and the subsequent trapping of an additional electron is used in explaining the formation of the F 2 (M) centers at RT in LiF via the following reactions: [34][35][36] . In our opinion, an oxygen vacancy ( F 2 + ) tentatively becoming mobile above 500 K interacts with an F center causing the formation of an F 2+ 2 center in α-Al 2 O 3 crystals.…”

Section: Resultsmentioning

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

View full text Add to dashboard Cite

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.

show abstract

Section: Resultsmentioning

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

View full text Add to dashboard Cite

show abstract

“…The thickness of the samples for all irradiations was larger than the ion range (R) [10]. The irradiations were performed at room temperature at fluences from 10 10 up to 10 15 ions/cm 2 at the beam current density of 10 nA/cm 2 , which is low enough to avoid the target heating effects [11]. Due to the different ion charges the constant beam current density corresponds to different fluxes (Table 1), that can effect on the defect creation efficiency at high fluence [12,13].…”

Section: Irradiation Experimentsmentioning

confidence: 99%

“…The spectra depend on the fluence increase in a complex manner, which turned out to be different for 12 C and 130 Xe ions. To compare color center creation in the samples irradiated with different projectiles, we used the average absorbed energy density (E abs ¼ U Â E ion =R, eV/cm 3 ) instead of the fluence, and the integral absorptions [6,11] for estimation of the concentrations of color centers (F and F n ):…”

Section: Absorption Spectroscopy Measurementsmentioning

confidence: 99%

Energy loss effect on color center creation in LiF crystals under irradiation with 12C, 14N, 40Ar, 84Kr, and 130Xe ions

Dauletbekova

Schwartz

Sorokin

et al. 2015

Nuclear Instruments and Methods in Physics Research Section B:

Self Cite

View full text Add to dashboard Cite

“…Ion tracks and related color centers were observed and studied in detail in a large number of different materials [5][6][7][8][9][10][11][12][13][14]. The most striking and impressive application of this technology is associated with the creation of polymer track membranes, the so-called nuclear membranes [15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Ion track template technique for fabrication of ZnSe2O5 nanocrystals

Аkilbekov

Akylbekovа

Usseinov

et al. 2020

Nuclear Instruments and Methods in Physics Research Section B:

Self Cite

View full text Add to dashboard Cite

ZnSe2O5 nanocrystals with an orthorhombic structure were synthesized by electrochemical deposition into a-SiO2/n-Si ion track template formed by 200 MeV Xe ion irradiation with the fluence of 10 7 ions/cm 2. The lattice parameters determined by the X-ray diffraction and calculated by the CRYSTAL computer program package are very close to each other. It was shown that ZnSe2O5 has a direct band gap of 2.8 eV at the Γ-point. In addition, the calculated charge distribution and chemical bonds show that the crystal has an ion-covalent nature. The photoluminescence excited by photons at 300 nm has a low intensity arising mainly due to zinc and oxygen vacancies.

show abstract

LiF crystals irradiated with 150MeV Kr ions: Peculiarities of color center creation and thermal annealing

Cited by 19 publications

References 25 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

Energy loss effect on color center creation in LiF crystals under irradiation with 12C, 14N, 40Ar, 84Kr, and 130Xe ions

Ion track template technique for fabrication of ZnSe2O5 nanocrystals

Contact Info

Product

Resources

About