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Просмотр по автору "Efimov V."

Просмотр по автору "Efimov V."

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  • A device generating nonequilibrium phonons of terahertz frequencies 
    Efimov V.; Motygullin I.; Rozentsvaig Y. (2003)
    A device generating nonequilibrium phonons with an equivalent temperature of up to 130 K in solids is described. The method of heat pulses is used. The heat pulses are initiated by current pulses with a width of 10-100 ns ...
  • A device generating nonequilibrium phonons of terahertz frequencies 
    Efimov V.; Motygullin I.; Rozentsvajg Y. (2003)
    A device generating nonequilibrium phonons with an equivalent temperature of up to 130 K in solids is described. The method of heat pulses is used. Heat pulses are initiated by current pulses with a width of 10-100 ns and ...
  • Characterization of Ce3+ and Yb3+ doped LiF-LuF 3-YF3 solid solutions as new UV active media 
    Nizamutdinov A.; Semashko V.; Naumov A.; Korableva S.; Marisov M.; Efimov V.; Nurtdinova L. (2011)
    Here laser studies of Ce3+:LiLuxMe 1-xF4 (Me=Y3+,Yb3+) mixed crystals homologous to well-known Ce3+:LiYF4 and Ce 3+:LiLuF4 UV crystalline active media are reported. Optical spectroscopy and X-ray diffraction studies have ...
  • Dissymmetrization in X-irradiated RbTiOPO4 crystal 
    Laruhin M.; Efimov V.; Nazarova V.; Bulka G. (1998)
    Electron paramagnetic resonance has been used to study the hole and electron paramagnetic centers formed in X-irradiated RbTiOPO4, the crystals of the KTP family. X-irradiation of RbTiOPO4 crystals at 77 K produced an ...
  • EPR Detection of Iron Storage in Rat Tissues After Simulated Microgravity Model 
    Yurtaeva S.; Efimov V.; Yafarova G.; Eremeev A.; Iyudin V.; Rodionov A.; Gainutdinov K.; Yatsyk I. (2016)
    © 2016, Springer-Verlag Wien.By a method of spectroscopy of electron paramagnetic resonance the tissues of rats after exposure of microgravity simulation (model of hindlimb unloading) were investigated. In the tissues of ...
  • Heterogeneity of antiferroelectric phase of mixed radp crystals: Epr investigation 
    Izotov V.; Efimov V.; Grinberg E. (1995)
    Detailed study of antiferroelectric (AFE) branch of mixed crystals Rb,, (NH,),H,PO, phase diagram x > 0.74 has been carried out by means of TI+ EPR probe. The coexistence of two structurally nonequivalent centers of thallium ...
  • Investigation of the photoionization of Ce3+ ions in a YAG crystal by microwave resonance technique 
    Pavlov V.; Semashko V.; Rakhmatullin R.; Efimov V.; Korableva S.; Nurtdinova L.; Marisov M.; Gorieva V. (2013)
    The kinetic and spectral characteristics of the complex dielectric constant of a Ce: YAG crystal under laser irradiation in 250-275 nm spectral range are investigated. The lifetimes of free charge carriers and charge ...
  • Magnetic Resonance of Ferritin Crystalline Particles in Tumor Tissue 
    Yurtaeva S.; Efimov V.; Silkin N.; Rodionov A.; Burmistrov M.; Panov A.; Moroshek A. (2012)
    Lyophilized samples of human tumor tissue exposed and not exposed to radiation therapy were investigated by magnetic resonance spectroscopy. The measurements were taken in the temperature range of 4-280 K on an X-band ...
  • Neutron and synchrotron X-ray powder study of copper(II) chloride complex with deuterated 1-ethyltetrazole 
    Ivashkevich L.; Lyakhov A.; Degtyarik M.; Efimov V.; Gaponik P.; Tiutiunnikov S.; Voitekhovich S.; Ivashkevich O.; Yusupov R.; Trots D.; Sikolenko V. (2009)
    The structure of the copper(II) chloride complex with deuterated 1-ethyltetrazole has been investigated in the temperature range of 2-290 K using neutron and synchrotron X-ray powder diffraction. The compound was found to ...
  • New hole configurations in X-irradiated KTiOPO4 crystals 
    Laruhin M.; Efimov V.; Nazarova V. (1997)
    Electron paramagnetic resonance has been used to study the structure and thermostability of oxygen hole centers produced in KTiOPO4 (KTP) crystals X-irradiated at 77 K. During the annealing of KTP crystals above 160 K the ...
  • On the distribution coefficient of Ce3+ ions in LiF-LuF3-YF3 solid-solution crystals 
    Nizamutdinov A.; Semashko V.; Naumov A.; Efimov V.; Korableva S.; Marisov M. (2010)
    The optimum ratio of the numbers of the Y3+ and Lu3+ ions in LiF-LuF3-YF3 solid solutions at which the distribution (introduction) coefficient of Ce3+ ions is three to five times larger than that in LiYF4 and LiLuF4 crystals ...
  • On the magnetism of liquid nitrogen-liquid oxygen mixture 
    Tagirov M.; Aminova R.; Frossati G.; Efimov V.; Mamin G.; Naletov V.; Tayurskii D.; Yudin A. (2003)
    The measurements of EPR line width in liquid nitrogen-liquid oxygen mixtures are presented. The observed anomalous dependence of line width on oxygen concentration can be understood if the existence of O2-O2-O2 and N2-O2-O2 ...
  • Spectral characteristics of solid solutions LiY1-x Lu x F4 doped by Ce3+ ions 
    Nizamutdinov A.; Semashko V.; Naumov A.; Nurtdinova L.; Abdulsabirov R.; Korableva S.; Efimov V. (2008)
    During crystallization, the LiF-YF3-LuF3 compounds form a continuous series of solid solutions having a scheelite structure at any proportion of the YF3 and LuF3 components. It is established that the crystals conform to ...
  • Superhyperfine structure of the EPR spectra of Ce3+ ions in LiRF4 (R = Y, Lu, Tm) double fluorides 
    Aminov L.; Ershova A.; Efimov V.; Korableva S.; Kurkin I.; Malkin B.; Rodionov A. (2010)
    The EPR spectra of Ce3+ impurity ions in LiYF4, LiLuF4, and LiTmF4 double-fluoride single crystals have been investigated at a frequency of ~9.3 GHz in the temperature range 5-25 K. The effective g factors of the ground ...
  • The lifetime distribution of Tl2+ defect configurations in K2SO4 crystals 
    Mamin G.; Efimov V. (1998)
    The coexistenceof EPR lines corresponding to ranges of fast and slow motion of relaxing Tl2+ defects in K2SO4 crystals was observed. The coexistence was determined to come from the lifetime distribution of Tl2+ low symmetry ...
  • The optical and EPR spectra of the hydrogen annealed KTiOPO4 crystals 
    Nazarova V.; Efimov V.; Laruhin M. (1999)
    In this work, the results of the hydrogen treatment and following that, the annealing in air of flux-grown KTiOPO4 (KTP) crystals are represented. We have tried to correlate our optical and EPR results. The main conclusion ...
  • The possible dynamic polarization of nuclei by using coal surface paramagnetic centers 
    Mamin G.; Suzuki H.; Tagirov M.; Efimov V.; Yudin A. (2003)
    Electron paramagnetic resonance spectra of paramagnetic centers on coal surface at 4.2-300 K have been measured when the sample is in contact with 3He, 4He or oxygen gases. At low temperatures the transferred hyperfine ...
  • The relaxing Tl2+ defects in crystals of β-K2SO4 group 
    Efimov V.; Mamin G. (1997)
    EPR of Tl2+ ions in K2SO4, Rb2SO4, Cs2SO4 crystals have been studied. Noncentrality of Tl2+ (II) ions was observed. Activation energy values of Tl(II) complexes motion were obtained. Anomalous temperature dependence of EPR ...
  • The Tl2+ paramagnetic defects dynamics in K2SeO4 crystals 
    Mamin G.; Efimov V. (1999)
    The anomalous temperature dependences of EPR spectrum of Tl2+ ions in K2SeO4 crystals were studied. These anomalies are produced by the Tl2+ noncentral motion. The character of interaction between noncentral defects and ...

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