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Optical and thermal investigation of sol-gel derived Eu(3+): Y(2)SiO(5) nanoparticles
(Acta Physica Polonica A, 2007)
Investigation done on Y(2)SiO(5) nanoparticles doped with Eu(3+) ions obtained with the alkoxy sol-gel route is presented in this paper. We investigate the optical and thermal properties of obtained material during the ...
Limitations of the generalized coupled two-level model during the multiphoton absorption in different gas mixtures
(Acta Physica Polonica A, 2007)
Generalized coupled two-level model is applied in different gas mixtures and investigated for high fluence regime. Functional dependences of mean number of absorbed photons per molecule LT n GT (total) on buffer-gas pressure ...
Calculation of the highly excited SF6 vibrational state distributions and dissociation yields in different gas mixtures
(Acta Physica Polonica A, 2007)
Influence of the buffer gas on the multiphoton absorption and dissociation in different mixtures was investigated. Simple method based on the empirical and theoretical vibrational energy distribution is applied for high ...
A Method for the Spectroscopic Diagnostic of the Peculiarities of Materials Using the Semi-Auger Effect
(Acta Physica Polonica A, 2009)
We investigated the low energy satellites in the Rontgen spectra using the many-particle theory. These satellites are results of the radiative semi-Auger decay of the inner vacancy states. We did not treat only ordinary ...
Effect of Fe2+ (Fe3+) Doping on Structural Properties of CeO2 Nanocrystals
(Acta Physica Polonica A, 2009)
We have measured the Raman scattering and magnetization of pure and Fe2+(Fe3+) doped CeO2 nanopowders at room temperature. The Raman scattering spectra revealed the existence of CeO2 fluorite cubic structure for all ...
Kinetics of Non-Radiative Rotational Isomer Butane Transitions
(Acta Physica Polonica A, 2009)
A theoretical model for calculation of equilibrium concentrations of isomeric butane molecule forms, and also the forms of hydrocarbons of the alkene series, is proposed. We considered the changes of internal rotational ...
Investigation on the crystallization process of Eu3+: CaSiO3 gel using optical and thermal methods
(Acta Physica Polonica A, 2007)
Alkoxy sol-gel technique is an important preparation method for production of rare-earth based phosphors. Crystallization of gel provides a way to prepare phosphors on lower working temperatures than those required for the ...
Hydrothermal Synthesis of CeO2 and Ce0.9Fe0.1O2 Nanocrystals
(Acta Physica Polonica A, 2009)
Pure and 10 mol% Fe3+ doped CeO2 nanocrystals were synthesized by hydrothermal method using two different basic solutions (NH4OH and NaOH). All the samples were calcinated at 140 degrees C and 200 degrees C. The characterization ...
Phototermal Spectra of Inhomogeneous Coatings
(Acta Physica Polonica A, 2009)
In this paper we demonstrate a theoretical study for photothermal measurements on inhomogeneous coatings. First, a general photothermal mathematical model for thermal gradient materials is presented. Then, we discuss the ...
On bright and dark breathers in lattices with saturable nonlinearity
(Acta Physica Polonica A, 2007)
The moving bright and dark localized modes in one-dimensional optical lattices with saturable nonlinearity are considered with respect to the grand canonical free energy concept and linear stability analysis of the eigenvalue ...