Vitali Tatartchenko - Academia.edu (original) (raw)

Papers by Vitali Tatartchenko

Research paper thumbnail of First Order Phase Transitions as Radiation Processes

Optics and Photonics Journal, 2013

This paper presents new experimental evidence of the PeTa effect-infrared characteristic radiatio... more This paper presents new experimental evidence of the PeTa effect-infrared characteristic radiation under first order phase transitions, especially the crystallization of melts and the deposition and condensation of vapours/gases. The PeTa effect describes the transient radiation that a particle (i.e., atom, molecule or/and cluster) emits transient radiation during a transition from a meta-stable higher energetic level (in a super-cooled melt or a super-saturated vapour) to the stable condensed lower level (in a crystal or a liquid). The radiation removes latent heat with photons of characteristic frequencies that are generated under this transition. The abbreviation "PeTa effect" means Perel'man-Tatartchenko's effect.

Research paper thumbnail of Freezing of Water and Crystals Formation: Double Electric Layer, Radio Emission, Dendrites, Snowflakes

arXiv (Cornell University), Dec 16, 2007

In the process of crystallization of deionized water its neutral molecules are forming on a surfa... more In the process of crystallization of deionized water its neutral molecules are forming on a surface the double electric layer (DEL) of oriented dipoles moments. Electric field of DEL will reorient approaching dipoles that leads to radio-emission in the range of 150 kHz. The attraction of such oriented dipoles to places of field gradients induces dendrites growth and formation of characteristic snowflakes at free movement of clusters through saturated vapor in atmosphere. The connection of constant electric field strengthens DELs' field and the growth of dendrite structure. Described phenomena may appear at crystallization of various substances, intensity of radio-emission can be used for monitoring corresponding processes in atmosphere and in technological devices.

Research paper thumbnail of Sonoluminescence as the PeTa Radiation, Part Two

Optics and Photonics Journal, 2017

This paper is a continuation of one published in this journal nine months ago. The two papers pre... more This paper is a continuation of one published in this journal nine months ago. The two papers present a model of cavitational luminescence (CL), multi-bubble sonoluminescence (MBSL), one-bubble sonoluminescence (OBSL), and laser-induced bubble luminescence (LIBL). The basis of this model is the PeTa (Perel'man-Tatartchenko) effect, a nonequilibrium characteristic radiation under first-order phase transitions, especially vapour condensation. In this model, the main role is given to the liquid, where the evaporation, condensation, flash, and subsequent collapse of bubbles occur. The instantaneous vapour condensation inside the bubble is a reason for the CL/MBSL/OBSL/LIBL. Apparently, the dissolved gases and other impurities in the liquid are responsible for peaks that appear at the background of the main spectrum. They are most likely excited by a shock wave occurred during the collapse. This paper, in contrast to the previous one, presents a slightly expanded model that explains additional experimental data concerning especially the LIBL spectrum. As a result, today we are not aware of any experimental data that would contradict the PeTa model, and we continue to assert that there is no mystery to the CL/MBSL/OBSL/LIBL phenomena, as well as no reason to hope that they can be used for high-temperature chemical reactions, and even more so for a thermonuclear ones.

Research paper thumbnail of Infrared characteristic radiation of water condensation and freezing in connection with atmospheric phenomena; part 2: New data

Earth-Science Reviews, Aug 1, 2011

ABSTRACT Infrared characteristic radiation of water condensation and freezing in connection with ... more ABSTRACT Infrared characteristic radiation of water condensation and freezing in connection with atmospheric phenomena; part 2: new data. V.A. Tatartchenko Saint-Gobain Crystals, France. vitali.tatartchenko@orange.fr Abstract. This paper considers the infrared characteristic radiation (IRCR) during the first order phase transitions (crystallization, condensation and sublimation) of water. Experimental results are analyzed in terms of their correspondence to the theoretical model. This model is based on the assumption that the particle's (atom, molecule, or cluster) transition from the higher energetic level in a metastable phase (vapor or liquid) to a lower level in a stable phase (liquid or crystal) produces an emission of one or more photons. The energy of these photons depends on the latent energy of the phase transition and the character of bonds formed by the particle in the new phase. For all investigated substances, this energy falls in the infrared range. Recorded in the atmosphere, many sources of the infrared radiation seem to be a result of crystallization, condensation and sublimation of water during fog and cloud formation. The effect under investigation must play a very important role in atmospheric phenomena: it is one of the sources of Earth's cooling; formation of hailstorm clouds is accompanied by intensive characteristic infrared radiation that could be detected for process characterization and meteorological warnings. IRCR seems to be used for atmospheric energy accumulation and together with the wind, falling water, solar and geothermal energies makes available the fifth source of ecologically pure energy. This phenomenon may either be used to search the water in the atmospheres of other planets. Keywords: First order phase transitions of water; condensation; crystallization; sublimation; infrared radiation; atmospheric phenomena; formation of hail. PACS: 05.70.Fh; 64.70.Tg; 81.10.Aj; 92.60.H-; 92.60.Jq 92.60.N- 92.60.nc 92.60.nf;

Research paper thumbnail of Infrared characteristic radiation of water condensation and freezing in connection with atmospheric phenomena

Earth-Science Reviews, Jul 1, 2010

ABSTRACT This paper considers the emission of infrared characteristic radiation during the first ... more ABSTRACT This paper considers the emission of infrared characteristic radiation during the first order phase transitions of water (condensation and crystallization). Experimental results are analyzed in terms of their correspondence to the theoretical models. These models are based on the assumption that the particle's (atom, molecule, or cluster) transition from the higher energetic level (vapor or liquid) to a lower one (liquid or crystal) produces an emission of one or more photons. The energy of these photons depends on the latent energy of the phase transition and the character of bonds formed by the particle in the new phase. Based on experimental data, the author proposes a model explaining the appearance of a window of transparency for the characteristic radiation in the substances when first order phase transitions take place. The effect under investigation must play a very important role in atmospheric phenomena: it is one of the sources of Earth's cooling; formation of hailstorm clouds in the atmosphere is accompanied by intensive characteristic infrared radiation that could be detected for process characterization and meteorological warnings. The effect can be used for atmospheric heat accumulation. Together with the energy of wind, falling water, and solar energy, fog and cloud formation could give us a forth source of ecologically pure energy. Searching for the presence of water in the atmospheres of other planets might also be possible using this technique. Furthermore, this radiation might explain the red color and infrared emission of Jupiter.

Research paper thumbnail of Growth of Shaped Crystals from the Melt

Research paper thumbnail of Sources of IR Radiation in the Earth’s Atmosphere in Connection with the PeTa Effect

Optics and Photonics Journal, 2021

The PeTa (Perelman-Tatartchenko) effect is the radiation of the energy of a first-order phase tra... more The PeTa (Perelman-Tatartchenko) effect is the radiation of the energy of a first-order phase transition during the transition from a less condensed phase to a more condensed one. The effect was independently discovered by M. Perelman and the author of this paper. Six papers on the PeTa effect have been published in this journal over the past nine years. They are devoted to the development of PeTa models to explain the following phenomena: IR radiation from cold surfaces, cavitation luminescence/sonoluminescence (CL/SL), laser-induced bubble luminescence (LIBL), and vapor bubble luminescence (VBL) in underwater geysers. This paper describes the sources of PeTa radiation in the Earth's atmosphere. These sources of infrared radiation have been investigated by numerous research groups, but their interpretation either does not exist at all, or it is erroneous. The following phenomena are specifically considered: PeTa radiation during the formation of clouds and fog; a pulse laser based on the PeTa radiation; condensation explosions as sources of PaTa radiation; measurement of the concentration of water vapor in the atmosphere using PeTa radiation; atmospheric scintillation of infrared radiation in the atmosphere due to the PeTa effect; PeTa radiation as a source of comfort for the igloo; the influence of PeTa radiation on living organisms; PeTa radiation due to characteristics of tropical storms; PeTa radiation as a possible precursor to earthquakes. The problem of global warming, which worries everyone, as it turns out, is also associated with the PeTa effect.

Research paper thumbnail of Bubble Glow at Hydrothermal Vents as the PeTa Radiation

Optics and Photonics Journal, 2019

The paper presents a physical model of a natural phenomenon, the glow of bubbles at hydrothermal ... more The paper presents a physical model of a natural phenomenon, the glow of bubbles at hydrothermal vents formed during underwater volcanic activity. The basis of the model is characteristic non-equilibrium radiation under first order phase transitions that since 2010 has been referred to as the PeTa (Perelman-Tatartchenko) effect. This is the fourth paper in a series developing the model for similar physical phenomena: cavitational luminescence (CL), multi-bubble sonoluminescence (MBSL), single-bubble sonoluminescence (SBSL) and laser-induced bubble luminescence (LIBL). The previous three papers were published during 2017-2018 in this Journal. In the third one we have shown that above mentioned physical effects can be generalized as a phenomenon that we have titled "Vapour bubble luminescence" (VBL). VBL is very clearly represented in a non-equilibrium phase diagram. The essence of VBL is as follows: when there is a local decrease in pressure and/or an increase of temperature in a tiny volume of a liquid occurs, one or several bubbles filled with vapour will appear. Subsequently a very rapid pressure increase and/or temperature decrease in the same volume of liquid leads to supersaturation of the vapour inside the bubble. Upon reaching critical vapor density, instantaneous vapour condensation and emission of the phase transition energy that is accompanied by a flash (this is the PeTa effect) results in a sharp pressure decrease and the bubble collapses due to the pressure drop. This process is accompanied by a shock wave in the liquid. A similar effect occurs if bubbles filled with hot steam, for example from a cappuccino machine, are injected into a relatively large volume of cold water. The VBL model explains all experimental data concerning CL/MBSL/SBSL/LIBL and the relatively new natural phenomenon, the glow of bubbles at hydrothermal vents. Several model experiments demonstrate the PeTa effect under similar conditions. Additionally, we define the PeTa effect in all its manifestations on a non-equilibrium phase diagram. This clarifies which niches can contain VBL processes. We also demonstrate the window of transparency (WT) for How to cite this paper: Tatartchenko, V.A.

Research paper thumbnail of Sonoluminescence as the PeTa Radiation

Optics and Photonics Journal, 2017

In this paper, a model of cavitational luminescence (CL) and sonoluminescence (SL) is developed. ... more In this paper, a model of cavitational luminescence (CL) and sonoluminescence (SL) is developed. The basis of the model is the PeTa (Perel'man-Tatartchenko) effect-a characteristic radiation under first-order phase transitions. The main role is given to the liquid, which is where the cavitation occurs. The evaporation of the liquid and subsequent vapor condensation inside the bubble are responsible for the CL and SL. Apparently, the dissolved gases and other impurities in the liquid are responsible for peaks that appear at the background of the main spectrum. They most likely are excited by a shock wave occurred during cavitation. The model explains the main experimental data. Thus, no mystery, no plasma, no Hollywood.

Research paper thumbnail of The Life of Alexander Stepanov and a Brief History of Shaped Crystal Growth

Research paper thumbnail of Some Peculiarities of First Order Phase Transitions

The paper presents evidence of the existence of infrared characteristic radiation ac- companying ... more The paper presents evidence of the existence of infrared characteristic radiation ac- companying phase transitions of the first order, especially crystallization. Experimental results of the author and other researchers concerning crystallization from the melt of some infrared trans- parent substances (alkali halides, sapphire) and nontransparent ones (tellurium, ice, copper) as well as condensation of water vapor, are presented. The author has critically analyzed these ex- perimental data in terms of correspondence to theoretical models. The last ones are based on the assumption that a particle, during transition from a higher energetic level (vapor or melt) to the lower energetic level (crystal), emits one or more photons equal to the latent energy of the transi- tion, or part of the energy. Based on the experimental data, the author proposes a model explain- ing the appearance of a window of transparency for the characteristic radiation in the substances when first order phase tr...

Research paper thumbnail of Monocristaux, procede de fabrication de monocristaux par croissance en solution et applications

L'invention concerne un monocristal (1, 11) quadratique de composition Z(H,D)2MO4, ou Z est u... more L'invention concerne un monocristal (1, 11) quadratique de composition Z(H,D)2MO4, ou Z est un element ou un groupe d'elements, ou un melange d'elements et/ou de groupe d'elements choisi parmi le groupe K, N(H,D)4, Rb, Ce ou M est un element choisi parmi le groupe P, As et ou (H,D) est de l'hydrogene et/ou du deuterium comprenant une zone sensiblement parallelepipedique de grande dimension, notamment dont la dimension de chacune des arretes des faces, AC1, AC2, AC3, est superieure ou egale a 200 mm, en particulier superieure ou egale a 500 mm, obtenu par croissance cristalline en solution a partir d'un germe monocristallin sensiblement parallelepipedique (2, 22), dont les arretes des faces sont de dimension AG1, AG2, AG3. Selon l'invention, au moins la dimension d'une arrete, AG1, du germe est superieure ou egale au dixieme, de preference au quart de la dimension d'une arrete des faces du monocristal et au moins une autre dimension du germe, AG3, ...

Research paper thumbnail of Growth of Large KDP Crystals in the Form of Plates

This paper suggests a new technique of growth-oriented KDP crystals in the form of plates. The te... more This paper suggests a new technique of growth-oriented KDP crystals in the form of plates. The technique includes: using small oriented seeds spaced between two parallel platforms with a rapid growth of crystals between these two platforms, in a tank containing a KDP solution. As a result, crystals in the form of plates can be obtained. The thickness of the crystal plate depends on the distance between platforms. The horizontal dimensions of the plate depend on the volume of solution and the diameter of the platforms. The orientation of the plates are defined by the orientation of the seed. KDP crystals in the form of plates of two orientations are grown. The peculiarities of morphology and some characteristics of crystals are discussed.

Research paper thumbnail of Sonoluminescence as the PeTa Radiation, Part Three

Optics and Photonics Journal

Research paper thumbnail of C-Plane Sapphire Method

Research paper thumbnail of Making Monocrystals in the Form of Plates by Growth in a Solution

Research paper thumbnail of The Possibility of Shape Stability in Capillary Crystal Growth and Practical Realization of Shaped Crystals

Research paper thumbnail of Single Crystal Growth of High Temperature Superconductors and Investigation of Their Physical Properties

International Journal of Modern Physics B, 1989

Part of the phase diagram of the La 2 O 3- CuO system has been studied and single crystals of La ... more Part of the phase diagram of the La 2 O 3- CuO system has been studied and single crystals of La 2 CuO 4, (LaSr) 2 CuO 4 (up to 20 × 8 × 6 mm 3), YBa 2 Cu 3 O 7−δ (up to 8 × 6 × 0.1 mm 3) and HoBa 2 Cu 3 O 7-(up to 3 × 2.5 × 1 mm 3) have been grown by the method of spontaneous crystallisation, using a rotational crucible. It has been established that thermal treatment of "123" single crystals under oxygen pressure to 10 bars improves their superconducting properties. Electrical, magnetic, optical properties, and the real structure of the single crystals produced have been studied.

Research paper thumbnail of Thermal Regime of Profile Pulling from Melt

Journal of Engineering Physics

Research paper thumbnail of Boundary conditions for capillary shaping of crystals pulled from the melt

Bulletin of the Russian Academy of Sciences Physics

Research paper thumbnail of First Order Phase Transitions as Radiation Processes

Optics and Photonics Journal, 2013

This paper presents new experimental evidence of the PeTa effect-infrared characteristic radiatio... more This paper presents new experimental evidence of the PeTa effect-infrared characteristic radiation under first order phase transitions, especially the crystallization of melts and the deposition and condensation of vapours/gases. The PeTa effect describes the transient radiation that a particle (i.e., atom, molecule or/and cluster) emits transient radiation during a transition from a meta-stable higher energetic level (in a super-cooled melt or a super-saturated vapour) to the stable condensed lower level (in a crystal or a liquid). The radiation removes latent heat with photons of characteristic frequencies that are generated under this transition. The abbreviation "PeTa effect" means Perel'man-Tatartchenko's effect.

Research paper thumbnail of Freezing of Water and Crystals Formation: Double Electric Layer, Radio Emission, Dendrites, Snowflakes

arXiv (Cornell University), Dec 16, 2007

In the process of crystallization of deionized water its neutral molecules are forming on a surfa... more In the process of crystallization of deionized water its neutral molecules are forming on a surface the double electric layer (DEL) of oriented dipoles moments. Electric field of DEL will reorient approaching dipoles that leads to radio-emission in the range of 150 kHz. The attraction of such oriented dipoles to places of field gradients induces dendrites growth and formation of characteristic snowflakes at free movement of clusters through saturated vapor in atmosphere. The connection of constant electric field strengthens DELs' field and the growth of dendrite structure. Described phenomena may appear at crystallization of various substances, intensity of radio-emission can be used for monitoring corresponding processes in atmosphere and in technological devices.

Research paper thumbnail of Sonoluminescence as the PeTa Radiation, Part Two

Optics and Photonics Journal, 2017

This paper is a continuation of one published in this journal nine months ago. The two papers pre... more This paper is a continuation of one published in this journal nine months ago. The two papers present a model of cavitational luminescence (CL), multi-bubble sonoluminescence (MBSL), one-bubble sonoluminescence (OBSL), and laser-induced bubble luminescence (LIBL). The basis of this model is the PeTa (Perel'man-Tatartchenko) effect, a nonequilibrium characteristic radiation under first-order phase transitions, especially vapour condensation. In this model, the main role is given to the liquid, where the evaporation, condensation, flash, and subsequent collapse of bubbles occur. The instantaneous vapour condensation inside the bubble is a reason for the CL/MBSL/OBSL/LIBL. Apparently, the dissolved gases and other impurities in the liquid are responsible for peaks that appear at the background of the main spectrum. They are most likely excited by a shock wave occurred during the collapse. This paper, in contrast to the previous one, presents a slightly expanded model that explains additional experimental data concerning especially the LIBL spectrum. As a result, today we are not aware of any experimental data that would contradict the PeTa model, and we continue to assert that there is no mystery to the CL/MBSL/OBSL/LIBL phenomena, as well as no reason to hope that they can be used for high-temperature chemical reactions, and even more so for a thermonuclear ones.

Research paper thumbnail of Infrared characteristic radiation of water condensation and freezing in connection with atmospheric phenomena; part 2: New data

Earth-Science Reviews, Aug 1, 2011

ABSTRACT Infrared characteristic radiation of water condensation and freezing in connection with ... more ABSTRACT Infrared characteristic radiation of water condensation and freezing in connection with atmospheric phenomena; part 2: new data. V.A. Tatartchenko Saint-Gobain Crystals, France. vitali.tatartchenko@orange.fr Abstract. This paper considers the infrared characteristic radiation (IRCR) during the first order phase transitions (crystallization, condensation and sublimation) of water. Experimental results are analyzed in terms of their correspondence to the theoretical model. This model is based on the assumption that the particle's (atom, molecule, or cluster) transition from the higher energetic level in a metastable phase (vapor or liquid) to a lower level in a stable phase (liquid or crystal) produces an emission of one or more photons. The energy of these photons depends on the latent energy of the phase transition and the character of bonds formed by the particle in the new phase. For all investigated substances, this energy falls in the infrared range. Recorded in the atmosphere, many sources of the infrared radiation seem to be a result of crystallization, condensation and sublimation of water during fog and cloud formation. The effect under investigation must play a very important role in atmospheric phenomena: it is one of the sources of Earth's cooling; formation of hailstorm clouds is accompanied by intensive characteristic infrared radiation that could be detected for process characterization and meteorological warnings. IRCR seems to be used for atmospheric energy accumulation and together with the wind, falling water, solar and geothermal energies makes available the fifth source of ecologically pure energy. This phenomenon may either be used to search the water in the atmospheres of other planets. Keywords: First order phase transitions of water; condensation; crystallization; sublimation; infrared radiation; atmospheric phenomena; formation of hail. PACS: 05.70.Fh; 64.70.Tg; 81.10.Aj; 92.60.H-; 92.60.Jq 92.60.N- 92.60.nc 92.60.nf;

Research paper thumbnail of Infrared characteristic radiation of water condensation and freezing in connection with atmospheric phenomena

Earth-Science Reviews, Jul 1, 2010

ABSTRACT This paper considers the emission of infrared characteristic radiation during the first ... more ABSTRACT This paper considers the emission of infrared characteristic radiation during the first order phase transitions of water (condensation and crystallization). Experimental results are analyzed in terms of their correspondence to the theoretical models. These models are based on the assumption that the particle's (atom, molecule, or cluster) transition from the higher energetic level (vapor or liquid) to a lower one (liquid or crystal) produces an emission of one or more photons. The energy of these photons depends on the latent energy of the phase transition and the character of bonds formed by the particle in the new phase. Based on experimental data, the author proposes a model explaining the appearance of a window of transparency for the characteristic radiation in the substances when first order phase transitions take place. The effect under investigation must play a very important role in atmospheric phenomena: it is one of the sources of Earth's cooling; formation of hailstorm clouds in the atmosphere is accompanied by intensive characteristic infrared radiation that could be detected for process characterization and meteorological warnings. The effect can be used for atmospheric heat accumulation. Together with the energy of wind, falling water, and solar energy, fog and cloud formation could give us a forth source of ecologically pure energy. Searching for the presence of water in the atmospheres of other planets might also be possible using this technique. Furthermore, this radiation might explain the red color and infrared emission of Jupiter.

Research paper thumbnail of Growth of Shaped Crystals from the Melt

Research paper thumbnail of Sources of IR Radiation in the Earth’s Atmosphere in Connection with the PeTa Effect

Optics and Photonics Journal, 2021

The PeTa (Perelman-Tatartchenko) effect is the radiation of the energy of a first-order phase tra... more The PeTa (Perelman-Tatartchenko) effect is the radiation of the energy of a first-order phase transition during the transition from a less condensed phase to a more condensed one. The effect was independently discovered by M. Perelman and the author of this paper. Six papers on the PeTa effect have been published in this journal over the past nine years. They are devoted to the development of PeTa models to explain the following phenomena: IR radiation from cold surfaces, cavitation luminescence/sonoluminescence (CL/SL), laser-induced bubble luminescence (LIBL), and vapor bubble luminescence (VBL) in underwater geysers. This paper describes the sources of PeTa radiation in the Earth's atmosphere. These sources of infrared radiation have been investigated by numerous research groups, but their interpretation either does not exist at all, or it is erroneous. The following phenomena are specifically considered: PeTa radiation during the formation of clouds and fog; a pulse laser based on the PeTa radiation; condensation explosions as sources of PaTa radiation; measurement of the concentration of water vapor in the atmosphere using PeTa radiation; atmospheric scintillation of infrared radiation in the atmosphere due to the PeTa effect; PeTa radiation as a source of comfort for the igloo; the influence of PeTa radiation on living organisms; PeTa radiation due to characteristics of tropical storms; PeTa radiation as a possible precursor to earthquakes. The problem of global warming, which worries everyone, as it turns out, is also associated with the PeTa effect.

Research paper thumbnail of Bubble Glow at Hydrothermal Vents as the PeTa Radiation

Optics and Photonics Journal, 2019

The paper presents a physical model of a natural phenomenon, the glow of bubbles at hydrothermal ... more The paper presents a physical model of a natural phenomenon, the glow of bubbles at hydrothermal vents formed during underwater volcanic activity. The basis of the model is characteristic non-equilibrium radiation under first order phase transitions that since 2010 has been referred to as the PeTa (Perelman-Tatartchenko) effect. This is the fourth paper in a series developing the model for similar physical phenomena: cavitational luminescence (CL), multi-bubble sonoluminescence (MBSL), single-bubble sonoluminescence (SBSL) and laser-induced bubble luminescence (LIBL). The previous three papers were published during 2017-2018 in this Journal. In the third one we have shown that above mentioned physical effects can be generalized as a phenomenon that we have titled "Vapour bubble luminescence" (VBL). VBL is very clearly represented in a non-equilibrium phase diagram. The essence of VBL is as follows: when there is a local decrease in pressure and/or an increase of temperature in a tiny volume of a liquid occurs, one or several bubbles filled with vapour will appear. Subsequently a very rapid pressure increase and/or temperature decrease in the same volume of liquid leads to supersaturation of the vapour inside the bubble. Upon reaching critical vapor density, instantaneous vapour condensation and emission of the phase transition energy that is accompanied by a flash (this is the PeTa effect) results in a sharp pressure decrease and the bubble collapses due to the pressure drop. This process is accompanied by a shock wave in the liquid. A similar effect occurs if bubbles filled with hot steam, for example from a cappuccino machine, are injected into a relatively large volume of cold water. The VBL model explains all experimental data concerning CL/MBSL/SBSL/LIBL and the relatively new natural phenomenon, the glow of bubbles at hydrothermal vents. Several model experiments demonstrate the PeTa effect under similar conditions. Additionally, we define the PeTa effect in all its manifestations on a non-equilibrium phase diagram. This clarifies which niches can contain VBL processes. We also demonstrate the window of transparency (WT) for How to cite this paper: Tatartchenko, V.A.

Research paper thumbnail of Sonoluminescence as the PeTa Radiation

Optics and Photonics Journal, 2017

In this paper, a model of cavitational luminescence (CL) and sonoluminescence (SL) is developed. ... more In this paper, a model of cavitational luminescence (CL) and sonoluminescence (SL) is developed. The basis of the model is the PeTa (Perel'man-Tatartchenko) effect-a characteristic radiation under first-order phase transitions. The main role is given to the liquid, which is where the cavitation occurs. The evaporation of the liquid and subsequent vapor condensation inside the bubble are responsible for the CL and SL. Apparently, the dissolved gases and other impurities in the liquid are responsible for peaks that appear at the background of the main spectrum. They most likely are excited by a shock wave occurred during cavitation. The model explains the main experimental data. Thus, no mystery, no plasma, no Hollywood.

Research paper thumbnail of The Life of Alexander Stepanov and a Brief History of Shaped Crystal Growth

Research paper thumbnail of Some Peculiarities of First Order Phase Transitions

The paper presents evidence of the existence of infrared characteristic radiation ac- companying ... more The paper presents evidence of the existence of infrared characteristic radiation ac- companying phase transitions of the first order, especially crystallization. Experimental results of the author and other researchers concerning crystallization from the melt of some infrared trans- parent substances (alkali halides, sapphire) and nontransparent ones (tellurium, ice, copper) as well as condensation of water vapor, are presented. The author has critically analyzed these ex- perimental data in terms of correspondence to theoretical models. The last ones are based on the assumption that a particle, during transition from a higher energetic level (vapor or melt) to the lower energetic level (crystal), emits one or more photons equal to the latent energy of the transi- tion, or part of the energy. Based on the experimental data, the author proposes a model explain- ing the appearance of a window of transparency for the characteristic radiation in the substances when first order phase tr...

Research paper thumbnail of Monocristaux, procede de fabrication de monocristaux par croissance en solution et applications

L'invention concerne un monocristal (1, 11) quadratique de composition Z(H,D)2MO4, ou Z est u... more L'invention concerne un monocristal (1, 11) quadratique de composition Z(H,D)2MO4, ou Z est un element ou un groupe d'elements, ou un melange d'elements et/ou de groupe d'elements choisi parmi le groupe K, N(H,D)4, Rb, Ce ou M est un element choisi parmi le groupe P, As et ou (H,D) est de l'hydrogene et/ou du deuterium comprenant une zone sensiblement parallelepipedique de grande dimension, notamment dont la dimension de chacune des arretes des faces, AC1, AC2, AC3, est superieure ou egale a 200 mm, en particulier superieure ou egale a 500 mm, obtenu par croissance cristalline en solution a partir d'un germe monocristallin sensiblement parallelepipedique (2, 22), dont les arretes des faces sont de dimension AG1, AG2, AG3. Selon l'invention, au moins la dimension d'une arrete, AG1, du germe est superieure ou egale au dixieme, de preference au quart de la dimension d'une arrete des faces du monocristal et au moins une autre dimension du germe, AG3, ...

Research paper thumbnail of Growth of Large KDP Crystals in the Form of Plates

This paper suggests a new technique of growth-oriented KDP crystals in the form of plates. The te... more This paper suggests a new technique of growth-oriented KDP crystals in the form of plates. The technique includes: using small oriented seeds spaced between two parallel platforms with a rapid growth of crystals between these two platforms, in a tank containing a KDP solution. As a result, crystals in the form of plates can be obtained. The thickness of the crystal plate depends on the distance between platforms. The horizontal dimensions of the plate depend on the volume of solution and the diameter of the platforms. The orientation of the plates are defined by the orientation of the seed. KDP crystals in the form of plates of two orientations are grown. The peculiarities of morphology and some characteristics of crystals are discussed.

Research paper thumbnail of Sonoluminescence as the PeTa Radiation, Part Three

Optics and Photonics Journal

Research paper thumbnail of C-Plane Sapphire Method

Research paper thumbnail of Making Monocrystals in the Form of Plates by Growth in a Solution

Research paper thumbnail of The Possibility of Shape Stability in Capillary Crystal Growth and Practical Realization of Shaped Crystals

Research paper thumbnail of Single Crystal Growth of High Temperature Superconductors and Investigation of Their Physical Properties

International Journal of Modern Physics B, 1989

Part of the phase diagram of the La 2 O 3- CuO system has been studied and single crystals of La ... more Part of the phase diagram of the La 2 O 3- CuO system has been studied and single crystals of La 2 CuO 4, (LaSr) 2 CuO 4 (up to 20 × 8 × 6 mm 3), YBa 2 Cu 3 O 7−δ (up to 8 × 6 × 0.1 mm 3) and HoBa 2 Cu 3 O 7-(up to 3 × 2.5 × 1 mm 3) have been grown by the method of spontaneous crystallisation, using a rotational crucible. It has been established that thermal treatment of "123" single crystals under oxygen pressure to 10 bars improves their superconducting properties. Electrical, magnetic, optical properties, and the real structure of the single crystals produced have been studied.

Research paper thumbnail of Thermal Regime of Profile Pulling from Melt

Journal of Engineering Physics

Research paper thumbnail of Boundary conditions for capillary shaping of crystals pulled from the melt

Bulletin of the Russian Academy of Sciences Physics