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1.
Инвентарный номер: нет.
   
   П 46


    Пожарская, Г. И.
    Диффузия броуновских частиц в критической области расслаивания раствора альфа, альфа/штрих-лутидин-вода [] = Diffusion of Brownian Particles in the Critical Region of a,a'-Lutidine-Water Solution Separation / Г. И. Пожарская, С. П. Самохин, В. П. Скрипов // Журнал физической химии. - 1996. - Т. 70, N4. - С. 652-654
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
ДИФФУЗИЯ РАСТВОРА -- ЧАСТИЦЫ БРОУНОВСКИЕ -- БРОУНОВСКИЕ ЧАСТИЦЫ -- расслаивание растворов -- РАСТВОР АЛЬФА, АЛЬФА/ШТРИХ-ЛУТИДИН-ВОДА -- АЛЬФА, АЛЬФА/ШТРИХ-ЛУТИДИН-ВОДА -- АЛЬФА, АЛЬФА/ШТРИХ-ЛУТИДИН-ВОДА-ЛАТЕКС -- АЛЬФА, АЛЬФА/ШТРИХ -- ЛУТИДИН -- ВОДА -- ЛАТЕКС -- СПЕКТРОСКОПИЯ КОРРЕЛЯЦИОННАЯ -- КОРРЕЛЯЦИОННАЯ СПЕКТРОСКОПИЯ -- ОБЛАСТЬ ГОМОГЕННАЯ -- ГОМОГЕННАЯ ОБЛАСТЬ -- ТОЧКА КРИТИЧЕСКАЯ -- КРИТИЧЕСКАЯ ТОЧКА
Аннотация: Методом корреляционной спектроскопии исследована серия растворов альфа, альфа/штрих-лутидин-вода-латекс в гомогенной области существования раствора альфа, альфа/штрих-лутидин-вода в окрестности критической точки расслаивания 10 в -4.5 степени < эпсилон = [T-Tc]Tc < 10 в -2.5 степени. Определены коэффициенты диффузии раствора и броуновских частиц

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2.
Инвентарный номер: нет.
   
   П 46


    Пожарская, Г. И.
    Диффузия броуновских частиц в критической области расслаивания раствора альфа, альфа/штрих-лутидин-вода [] = Diffusion of Brownian Particles in the Critical Region of a,a'-Lutidine-Water Solution Separation / Г. И. Пожарская, С. П. Самохин, В. П. Скрипов // Журнал физической химии. - 1996. - Т. 70, N4. - С. 652-654
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
ДИФФУЗИЯ РАСТВОРА -- ЧАСТИЦЫ БРОУНОВСКИЕ -- БРОУНОВСКИЕ ЧАСТИЦЫ -- расслаивание растворов -- РАСТВОР АЛЬФА, АЛЬФА/ШТРИХ-ЛУТИДИН-ВОДА -- АЛЬФА, АЛЬФА/ШТРИХ-ЛУТИДИН-ВОДА -- АЛЬФА, АЛЬФА/ШТРИХ-ЛУТИДИН-ВОДА-ЛАТЕКС -- АЛЬФА, АЛЬФА/ШТРИХ -- ЛУТИДИН -- ВОДА -- ЛАТЕКС -- СПЕКТРОСКОПИЯ КОРРЕЛЯЦИОННАЯ -- КОРРЕЛЯЦИОННАЯ СПЕКТРОСКОПИЯ -- ОБЛАСТЬ ГОМОГЕННАЯ -- ГОМОГЕННАЯ ОБЛАСТЬ -- ТОЧКА КРИТИЧЕСКАЯ -- КРИТИЧЕСКАЯ ТОЧКА
Аннотация: Методом корреляционной спектроскопии исследована серия растворов альфа, альфа/штрих-лутидин-вода-латекс в гомогенной области существования раствора альфа, альфа/штрих-лутидин-вода в окрестности критической точки расслаивания 10 в -4.5 степени < эпсилон = [T-Tc]Tc < 10 в -2.5 степени. Определены коэффициенты диффузии раствора и броуновских частиц

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3.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    Transport coefficients and the spinodal of a fluid [Electronic resource] / V. G. Baidakov // Physical Review E: Statistical, Nonlinear, and Soft Matter Physics. - 2012. - Vol.86, №2. - P021201
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
COMPUTER SIMULATION -- TRANSPORT COEFFICIENTS -- LENNARD-JONES
Аннотация: Based on the results of computer simulation of transport coefficients in a Lennard-Jones fluid, it has been shown that in (p,T) coordinates, lines of constant values of coefficients of self-diffusion D and excess shear viscosity Δη extended into the region of superheated liquid and supersaturated vapor have an envelope. Each of the ensembles of such lines is divided into two parts by a critical isoline, where the conditions ϕ=ϕc=const (ϕ=D,Δη) are fulfilled. One part of this ensemble has as an envelope the branch of the spinodal that refers to superheated liquid; the other part has the branch of the spinodal of supersaturated vapor. The critical point of liquid-vapor equilibrium is the cusp of the spinodal, at which the critical isolines have a common tangent line with the spinodal and the binodal. Thus, at the approach to the spinodal, the relations (∂D/∂p)T→∞ and (∂Δη/∂p)T→∞ hold

\\\\Expert2\\nbo\\Physical Review E\\2012, v. 86, p.021201.pdf
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4.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    Transport coefficients and the spinodal of a fluid [Electronic resource] / V. G. Baidakov // Physical Review E: Statistical, Nonlinear, and Soft Matter Physics. - 2012. - Vol.86, №2. - P021201
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
COMPUTER SIMULATION -- TRANSPORT COEFFICIENTS -- LENNARD-JONES
Аннотация: Based on the results of computer simulation of transport coefficients in a Lennard-Jones fluid, it has been shown that in (p,T) coordinates, lines of constant values of coefficients of self-diffusion D and excess shear viscosity Δη extended into the region of superheated liquid and supersaturated vapor have an envelope. Each of the ensembles of such lines is divided into two parts by a critical isoline, where the conditions ϕ=ϕc=const (ϕ=D,Δη) are fulfilled. One part of this ensemble has as an envelope the branch of the spinodal that refers to superheated liquid; the other part has the branch of the spinodal of supersaturated vapor. The critical point of liquid-vapor equilibrium is the cusp of the spinodal, at which the critical isolines have a common tangent line with the spinodal and the binodal. Thus, at the approach to the spinodal, the relations (∂D/∂p)T→∞ and (∂Δη/∂p)T→∞ hold

\\\\Expert2\\nbo\\Physical Review E\\2012, v. 86, p.021201.pdf
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5.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    The self-diffusion coefficient in stable and metastable states of the Lennard-Jones fluid [Electronic resource] / V. G. Baidakov, S. P. Protsenko, Z. R. Kozlova // Fluid Phase Equilibria. - 2011. - Vol. 305, № 2. - P106-113
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
LENNARD-JONES FLUID -- VAPOR -- SUPERHEATED LIQUIDS
Аннотация: Molecular-dynamics simulations have been employed to calculate the self-diffusion coefficient of a Lennard-Jones fluid for 198 sets of state parameters in the range of temperatures 0.35 <= k(B)T/epsilon <= 2.0 and densities 0.005 <= rho sigma(3) <= 1.2. Calculations have been made in stable and metastable states to the boundary of spontaneous nucleation in a model containing 2048 interacting particles. Results of computations, performed in the parameter range of stable states, are compared with the results of previous papers. Equations have been formulated, which describe the dependences of the self-diffusion coefficient on temperature and density and on temperature and pressure in the whole range of parameters including both the stable and metastable (supersaturated vapor, superheated and supercooled liquid) states of fluid

\\\\Expert2\\nbo\\Fluid Phase Equilibria\\2011, v.305, p. 106-113.pdf
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6.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    The self-diffusion coefficient in stable and metastable states of the Lennard-Jones fluid [Electronic resource] / V. G. Baidakov, S. P. Protsenko, Z. R. Kozlova // Fluid Phase Equilibria. - 2011. - Vol. 305, № 2. - P106-113
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
LENNARD-JONES FLUID -- VAPOR -- SUPERHEATED LIQUIDS
Аннотация: Molecular-dynamics simulations have been employed to calculate the self-diffusion coefficient of a Lennard-Jones fluid for 198 sets of state parameters in the range of temperatures 0.35 <= k(B)T/epsilon <= 2.0 and densities 0.005 <= rho sigma(3) <= 1.2. Calculations have been made in stable and metastable states to the boundary of spontaneous nucleation in a model containing 2048 interacting particles. Results of computations, performed in the parameter range of stable states, are compared with the results of previous papers. Equations have been formulated, which describe the dependences of the self-diffusion coefficient on temperature and density and on temperature and pressure in the whole range of parameters including both the stable and metastable (supersaturated vapor, superheated and supercooled liquid) states of fluid

\\\\Expert2\\nbo\\Fluid Phase Equilibria\\2011, v.305, p. 106-113.pdf
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7.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    The self-diffusion coefficient in metastable states of a Lennard-Jones fluid / V. G. Baidakov, Z. R. Kozlova // Chemical Physics Letters. - 2010. - Vol.500, №1-3. - С. 23-27
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
MOLECULAR-DYNAMICS SIMULATION -- CRITICAL POINTS -- VISCOSITY
Аннотация: Molecular-dynamics computer simulation has been used to calculate the self-diffusion coefficient of a Lennard-Jones fluid in the interval of reduced temperatures T* = 0.35-2.0, through mean-squared particles displacements and the velocity autocorrelation function. Calculations have been performed for systems in stable and metastable states up to the boundary of spontaneous nucleation in a model of a fluid consisting of 2048 particles. The values of the self-diffusion coefficient on the spinodals of a superheated liquid and supersaturated vapor have been determined. It has been established that in the region of supercooled states of the liquid phase on an isotherm the logarithm of the self-diffusion coefficient is a linear function of the pressure

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8.
Инвентарный номер: нет.
   
   B 16


    Baidakov, V. G.
    The self-diffusion coefficient in metastable states of a Lennard-Jones fluid / V. G. Baidakov, Z. R. Kozlova // Chemical Physics Letters. - 2010. - Vol.500, №1-3. - С. 23-27
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
MOLECULAR-DYNAMICS SIMULATION -- CRITICAL POINTS -- VISCOSITY
Аннотация: Molecular-dynamics computer simulation has been used to calculate the self-diffusion coefficient of a Lennard-Jones fluid in the interval of reduced temperatures T* = 0.35-2.0, through mean-squared particles displacements and the velocity autocorrelation function. Calculations have been performed for systems in stable and metastable states up to the boundary of spontaneous nucleation in a model of a fluid consisting of 2048 particles. The values of the self-diffusion coefficient on the spinodals of a superheated liquid and supersaturated vapor have been determined. It has been established that in the region of supercooled states of the liquid phase on an isotherm the logarithm of the self-diffusion coefficient is a linear function of the pressure

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9.
Инвентарный номер: нет.
   
   K 79


    Koverda, V. P.
    Statistics of fluctuations with a 1/f spectrum at phase transitions in a spatially distributed system / V. P. Koverda, V. N. Skokov // Physica A. - 2011. - Vol. 390, № 13. - С. 2468-2479
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
1/f-NOISE -- FIRST PASSAGE TIME -- AVALANCHES
Аннотация: A study has been made on the statistics of fluctuations in a spatially distributed system, which describes the interaction of nonequilibrium phase transitions. It is shown that at a certain intensity of external white noise acting on phase transitions, the time and spatial spectra of fluctuations have power laws S(f)∼f−α and S(k)∼k−γ. The dependence of the exponents α and γ on the value of the diffusion coefficient determining the spatial interaction of fluctuations have been found. Extreme low-frequency fluctuations has been revealed and distribution functions of their duration P(τ)∼τ−β and size P(s)∼s−ν have been determined. It has been found that the exponent α of the frequency dependence of time spectra and the exponent β of the distribution function of the fluctuation duration are related by the relation α+β=2. The exponent of the spatial spectrum γ and the exponent of the size distribution function ν are related by a similar relation: γ+ν=2. The results of experimental studies on fluctuations in a typical nonequilibrium phase transition such as transient modes of water boiling on a wire heater are presented. It was demonstrated that the critical exponents, which describe the power dependence of power spectra of fluctuations and the amplitude distribution of extreme surges, are related by the relation α+β=2 both in experiments and in the theoretical model of interacting heterogeneous phase transitions

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10.
Инвентарный номер: нет.
   
   K 79


    Koverda, V. P.
    Statistics of fluctuations with a 1/f spectrum at phase transitions in a spatially distributed system / V. P. Koverda, V. N. Skokov // Physica A. - 2011. - Vol. 390, № 13. - С. 2468-2479
ББК 53
Рубрики: ФИЗИКА
Кл.слова (ненормированные):
1/f-NOISE -- FIRST PASSAGE TIME -- AVALANCHES
Аннотация: A study has been made on the statistics of fluctuations in a spatially distributed system, which describes the interaction of nonequilibrium phase transitions. It is shown that at a certain intensity of external white noise acting on phase transitions, the time and spatial spectra of fluctuations have power laws S(f)∼f−α and S(k)∼k−γ. The dependence of the exponents α and γ on the value of the diffusion coefficient determining the spatial interaction of fluctuations have been found. Extreme low-frequency fluctuations has been revealed and distribution functions of their duration P(τ)∼τ−β and size P(s)∼s−ν have been determined. It has been found that the exponent α of the frequency dependence of time spectra and the exponent β of the distribution function of the fluctuation duration are related by the relation α+β=2. The exponent of the spatial spectrum γ and the exponent of the size distribution function ν are related by a similar relation: γ+ν=2. The results of experimental studies on fluctuations in a typical nonequilibrium phase transition such as transient modes of water boiling on a wire heater are presented. It was demonstrated that the critical exponents, which describe the power dependence of power spectra of fluctuations and the amplitude distribution of extreme surges, are related by the relation α+β=2 both in experiments and in the theoretical model of interacting heterogeneous phase transitions

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