Перегляд за темою "Low-Temperature Radiation Effects in Wide Gap Materials"

Результати 1-16 з 16

A novel quantum field approach to photoexcited insulators

Klotins, E. (Физика низких температур, 2016)

In order to predict optical properties of insulating materials under intensive laser excitation, we generalized methods of quantum electrodynamics, allowing us to simulate excitation of electrons and holes, interacting ...
Cathodoluminescence characterization of polystyrene-BaZrO₃ hybrid composites

Savchyn, V.P.; Popov, A.I.; Aksimentyeva, O.I.; Klym, H.; Horbenko, Yu.Yu.; Serga, V.; Moskina, A.; Karbovnyk, I. (Физика низких температур, 2016)

The radiation properties and the electronic structure of hybrid composites based on suspension polystyrene (PS) and nanocrystals of BaZrO₃ (BZO) ( d < 50 nm) have been studied using luminescent spectroscopy and x-ray ...
Electronic structure of cubic ScF₃ from first-principles calculations

Bocharov, D.; Žguns, P.; Piskunov, S.; Kuzmin, A.; Purans, J. (Физика низких температур, 2016)

The ground state properties of cubic scandium trifluoride (ScF₃) perovskite were studied using first-principles calculations. The electronic structure of ScF₃ was determined by linear combination of atomic orbital (LCAO) ...
Long-term evolution of luminescent properties in CdI₂ crystals

Karbovnyk, I.; Bolesta, I.; Rovetskyi, I.; Lesivtsiv, V.; Shmygelsky, Ya.; Velgosh, S.; Popov, A.I. (Физика низких температур, 2016)

Fresh and aged melt-grown or gas-phase grown CdI₂ crystals are studied by means of low-temperature photoluminescence spectroscopy. Noticeable transformations of emission spectra are observed after long-term aging. The ...
Low-temperature creation of Frenkel defects via hot electron-hole recombination in highly pure NaCl single crystals

Lushchik, A.; Lushchik, Ch.; Nagirnyi, V.; Shablonin, E.; Vasil’chenko, E. (Физика низких температур, 2016)

The creation spectrum of stable F centres (being part of F-H pairs of Frenkel defects) by synchrotron radiation of 7–40 eV has been measured for highly pure NaCl single crystals at 12 K using a highly sensitive luminescent ...
Low-temperature radiation effects in wide gap materials

Popov, A.I.; Lushchik, A.; Kotomin, E. (Физика низких температур, 2016)
Luminescence of SiO₂ and GeO₂ crystals with rutile structure. Comparison with α-quartz crystals and relevant glasses (Review Article)

Trukhin, A.N. (Физика низких температур, 2016)

Luminescence properties of SiO₂ in different structural states are compared. Similar comparison is made for GeO₂. Rutile and α-quartz structures as well as glassy state of these materials are considered. Main results are ...
Optical absorption and luminescence studies of fast neutron-irradiated complex oxides for jewellery applications

Mironova-Ulmane, N.; Skvortsova, V.; Popov, A.I. (Физика низких температур, 2016)

We studied the optical absorption and luminescence of agate (SiO₂), topaz (Al₂[SiO₄](FOH)₂), beryl (Be₃ Al₂Si₆O₁₈), and prehnite (Ca₂Al(AlSi₃O₁₀)(OH)₂) doped with different concentrations of transition metal ions and exposed ...
Optical detection of paramagnetic centres: from crystals to glass-ceramics

Uldis Rogulis (Физика низких температур, 2016)

An unambiguous attribution of the absorption spectra to definite paramagnetic centres identified by the EPR techniques in the most cases is problematic. This problem may be solved by applying of a direct measurement ...
Positron annihilation characterization of free volume in micro- and macro-modified Cu₀.₄Co₀.₄Ni₀.₄Mn₁.₈O₄ ceramics

Klym, H.; Ingram, A.; Shpotyuk, O.; Hadzaman, I.; Solntsev, V.; Hotra, O.; Popov, A.I. (Физика низких температур, 2016)

Free volume and pore size distribution size in functional micro and macro-micro-modified Cu₀.₄Co₀.₄Ni₀.₄Mn₁.₈O₄ ceramics are characterized by positron annihilation lifetime spectroscopy in comparison with Hg-porosimetry ...
Synchrotron-based far-infrared spectroscopy of nickel tungstate

Kalinko, A.; Kuzmin, A.; Roy, P.; Evarestov, R.A. (Физика низких температур, 2016)

Monoclinic antiferromagnetic NiW ₄ was studied by far-infrared (30–600 cm−¹) absorption spectroscopy in the temperature range of 5–300 K using the synchrotron radiation from SOLEIL source. Two isomorphous CoWO₄ and ZnWO₄ ...
Temperature and impurity concentration effects on upconversion luminescence in LaInO₃ doped with Er³⁺

Sarakovskis, A.; Grube, J.; Strals, K.; Krieke, G.; Springis, M.; Mironova-Ulmane, N.; Skvortsova, V.; Yukhno, L.A.; Bashkirov, E.K. (Физика низких температур, 2016)

In this paper a novel method for synthesis of LaInO₃:Er³⁺ is reported and upconversion luminescence properties of the synthesized material at different temperatures (9–300 K) are studied. The samples were prepared by ...
Theoretical analysis of the kinetics of low-temperature defect recombination in alkali halide crystals

Kuzovkov, V.N.; Popov, A.I.; Kotomin, E.A.; Moskina, A.M.; Vasil'chenko, E.; Lushchik, A. (Физика низких температур, 2016)

We analyzed carefully the experimental kinetics of the low-temperature diffusion-controlled F, H center recombination in a series of irradiated alkali halides and extracted the migration energies and pre-exponential ...
UV-VUV synchrotron radiation spectroscopy of NiWO₄

Kuzmin, A.; Pankratov, V.; Kalinko, A.; Kotlov, A.; Shirmane, L.; Popov, A.I. (Физика низких температур, 2016)

Photoluminescence and excitation spectra of microcrystalline and nanocrystalline nickel tungstate (NiWO₄) were measured using UV-VUV synchrotron radiation source. The origin of the bands is interpreted using comparative ...
Специфика излучательной аннигиляции автолокализованных экситонов в кристалле KI–Tl при низкотемпературной деформации

Шункеев, К.Ш.; Жантурина, Н.Н.; Аймаганбетова, З.К.; Бармина, A.A.; Мясникова, Л.Н.; Сагимбаева, Ш.Ж.; Сергеев, Д.М. (Физика низких температур, 2016)

В кристалле KI–Tl по регистрации спектров рентгенолюминесценции установлено воздействие низкотемпературной одноосной деформации на длину свободного пробега экситона до автолокализации. Анализ соотношения интенсивностей ...
Эффекты близости в холодном газе многозарядных атомов (Обзор)

Chikina, I.; Шикин, В. (Физика низких температур, 2016)

Обсуждаются возможные эффекты близости в газе холодных многозарядных атомов. Речь идет о разреженном газе плотностью dn тяжелых атомов (Z >> 1) при низких температурах в рамках известного приближения Томаса–Ферми (TF), ...

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Перегляд за темою "Low-Temperature Radiation Effects in Wide Gap Materials"

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