Zobrazeno 1 - 10
of 83
pro vyhledávání: '"E. A. Radzhabov"'
Publikováno v:
Bulletin of the Russian Academy of Sciences: Physics. 86:802-805
Publikováno v:
Radiation Measurements. 125:25-28
The absorption spectra of X-ray irradiated alkaline earth fluoride (CaF2, SrF2, BaF2) crystals doped with Sm, Нo, Er, Tm ions are investigated by thermal bleaching of the sample in the 300–700 K temperature range. X-ray irradiation creates absorpt
Electron Transfer between Different Lanthanide Centers in BaF2 Crystals—Part II: Transfer Mechanisms
Autor:
E. A. Radzhabov, V. A. Kozlovskii
Publikováno v:
Physics of the Solid State. 61:785-788
Processes of photo-induced electron transfer from a bivalent acceptor lanthanide (Eu, Sm, and Yb) onto a trivalent donor lanthanide (Nd, Sm, Dy, Tm, and Yb) and the inverse thermally activated transfer are studied in barium fluoride crystals. At room
Autor:
E. A. Radzhabov, V.A. Kozlovsky
Publikováno v:
Radiation Measurements. 122:63-66
Forward electron photo-transfer and reverse thermal transfer between divalent and trivalent heterogeneous lanthanides in barium fluoride crystals has been studied using optical absorption. In crystals activated by two heterogeneous lanthanides and gr
Autor:
E. A. Radzhabov, R. Yu. Shendrik
Publikováno v:
Bulletin of the Russian Academy of Sciences: Physics. 83:300-304
A study is performed of optical spectra (absorption, excitation, luminescence, energy yield) associated with the upconversion of infrared excitation of 980 nm into visible radiation in crystals of alkaline–earth fluorides CaF2, SrF2, and BaF2, co-d
Autor:
A. V. Samborsky, E. A. Radzhabov
Publikováno v:
AIP Conference Proceedings.
The dielectric spectra of LaF3 crystals activated by rare-earth ions Eu2+, Sm2+, and Yb2+, gradually cooled from 300 to 240 K, were investigated. Obtained experimental data were compared with experimental data obtained previously by other authors. Th
Autor:
A. N. Sapozhnikov, Boris A. Trofimov, L. E. Zelenkov, I. V. Klimenkov, E. A. Radzhabov, Boris G. Sukhov, A. V. Zhmurova, A. I. Illarionov, T. V. Ganenko, R. Yu. Shendrik
Publikováno v:
Bulletin of the Russian Academy of Sciences: Physics. 81:1244-1250
The absorption of a nanocomposite of silver nanoparticles and arabinogalactan in the UV–Vis spectral range is due to the presence of end aldehyde groups in the arabinogalactan and plasmon vibrations in 0D nanosilver. The absorption spectrum of a fu
Autor:
A. V. Samborsky, E. A. Radzhabov
Publikováno v:
Bulletin of the Russian Academy of Sciences: Physics. 81:1058-1061
The optical spectra and electric conductivity of LaF3 crystals doped with 0.01, 0.1, and 0.3 mol % YbF3, where Yb was partly or completely recharged to the divalent state, are studied. The long-wavelength absorption band of 370 nm is caused by electr
Publikováno v:
Bulletin of the Russian Academy of Sciences: Physics. 81:1141-1145
The results from a theoretical study of the electron structure of an impurity rare-earth Sm2+ defect in a LaF3 crystal are presented. The electron energy levels of the rare-earth impurity defect and the transitions between them are studied using the
Publikováno v:
Optics and Spectroscopy. 122:901-905
The mechanism of coloration of alkaline-earth fluoride crystals CaF2, SrF2, and BaF2 in calcium vapors in an autoclave with a cold zone is studied. It was found that the pressure in the autoclave upon constant evacuation by a vacuum pump within the t