Новые поступления

Ion acoustic solitary wave in an ion beam driven dusty plasma ion acoustic solitary wave in an ion
Low temperature plasmas containing massive charged dusts have attracted a considerable attention over the last few decades. Such plasmas are relevant in astrophysical settings, such as formation of stars in interstellar clouds or physical processes in cometary tails and planetary magnetospheres as well as in industrial plasmas, e.g., semiconductor processing etc.. The presence of these charged dusts in electron-ion plasmas modifies the propagation of dust ion-acoustic wave (DIAWs) or dust-acoustic wave (DAWs). On the other hand, it is seen that energetic charged particles such as ion beam can significantly modify the propagation characteristics of solitary waves in plasmas. Also, it has been observed that the propagation of high current finite length ion beam in the background plasma plays a significant role in many applications, e.g., heavy-ion fusion, plasma lenses, cosmic ray propagation etc . Here based on plasma fluid theory as well as along with experimental demonstrations, all the different features of ion acoustic solitary waves in an ion beam driven dusty plasma are discussed in detail keeping in view of basic as well as applied plasma physics.
4839 RUR
Dust Ion-acoustic Solitary Waves With A Streaming Ion Beam ion acoustic solitary wave in an ion
Life on Earth has made us familiar with three states of matter, viz; solid, liquid, and gaseous states. However, when a gas is heated to higher temperatures, it disintegrates into ions and electrons and the gas becomes fully or partially ionized forming a plasma state, which is the 'fourth state' of matter. The presence of massive charged dust particles in a plasma can drastically influence the dispersion and nonlinear properties of a wave. As a result, in recent years, there has been a rapidly growing interest in nonlinear phenomena (such as solitons) in dusty plasmas. A theoretical investigation of non-linear electrostatic dust ion acoustic waves in an unmagnetized dusty plasma consisting of ion and ion beam fluids, nonthermal electrons and immobile dust particles was done by the Sagdeev pseudo potential approach. For large beam speeds, three stable modes propagated as solitary waves in the beam plasma. These were the 'Fast', 'Slow' and 'Ion-acoustic' modes. Further, both compressive and rarefactive potential solitons were found and rarefactive type could not be limited by the existence of double layers. These results are useful in laboratory, industry and space dusty plasmas.
3549 RUR
Nonlinear Wave Phenomena in Plasma : Some Current Problems ion acoustic solitary wave in an ion
The monograph is designed to illustrate some important wave phenomena in plasma with some current problems .Chapter 1 deals with Landau damping of ion-acoustic waves in a multicomponent plasma. In Chapter 2 we discuss the possibilities of the radiation of electromagnetic waves by the conversion of ion-acoustic waves in the ionosphere and solar corona. In Chapter 3 we consider the propagation of ion-acoustic solitary waves in a drifting plasma with nonthermal electrons. Chapter 4 deals with the study of ion-acoustic double-layers in a multicomponent drifting plasma. In Chapter 5 modulational instability of high frequency surface waves on a warm plasma half-space has been investigated. In Chapter 6 a theoretical estimation has been carried out for the nonlinear Faraday rotation of obliquely propagating ion-cyclotron whistlers in the ionosphere. Resonant interaction of MHD wave with its second harmonic in a planar plasma-filled waveguide has been considered in Chapter 7. Quantum effects in plasma on the linear and nonlinear behaviour of electron plasma waves have been considered in Chapter 8. In the last chapter the theory of generation of magnetic moment field has been considered
4839 RUR
Electrostatic Ion Waves Modified by Parallel Ion-Velocity Shear ion acoustic solitary wave in an ion
The objective of this work is the experimental study of the effect of inhomogeneous magnetic-field-aligned (parallel) ion drift on the destabilization and propagation of electrostatic ion waves. Such inhomogeneous ion velocity is created in the cylindrical barium plasma column produced in a Q-machine. Noninvasive measurements of the ion velocity distribution are performed using the laser-induced fluorescence technique. Multi-harmonic ion cyclotron waves are identified, and experimental evidence is presented that ion cyclotron damping can become inverted to result in net wave growth. For other experimental conditions, low frequency ion acoustic waves are identified, characterized and compared favorably with theory. These results provide experimental support for the inhomogeneous-parallel-ion-flow-model interpretation of electrostatic ion-cyclotron and ion-acoustic waves observed in the auroral region. The results also broaden fundamental plasma physics concepts such as ion-cyclotron damping to include the possibility of inverse ion-cyclotron damping.
7790 RUR
Electro-Acoustic Solitary Waves in a Magnetized Nonextensive Plasma ion acoustic solitary wave in an ion
Nowadays, there has been a great deal of interest in understanding different types of wave propagation in dusty plasmas. The nonlinear propagation of ion acoustic (IA), dust-ion acoustic (DIA), and dust-acoustic (DA) solitary waves (SWs) in a magnetized dusty plasma are studied theoretically by taking into account the effect of the nonextensive electrons and the external magnetic field. The Korteweg de-Vries (K-dV) equation for these small but finite amplitude SWs are derived and their obliqueness are studied by the reductive perturbation method. The dust, ions, nonextensive electrons, the external magnetic field, and the angle between the direction of propagation and the magnetic field significantly modify the basic features of the SWs. The number density and mass of the extremely massive negatively charged dust grain modify the basic properties of the SWs. The SWs exhibit compression and rarefaction depending on the nonextensive parameter of electrons. The implications of the underlying physics of the obtained results, which are relevant to space plasmas (e.g. Earth's bow-shock, hadronic matter, etc.) and laboratory plasmas (e.g. rf discharges, etc.), are also analyzed.
4929 RUR
Steps In The Development of a PIC-MCC Model For An Ion Engine ion acoustic solitary wave in an ion
The design and development of ion engines is a difficult and expensive process. In order to alleviate these costs and speed ion engine development, it is proposed to further develop a particle-in-cell (PIC), Monte-Carlo collision (MCC) model of an ion engine discharge chamber, which has previously been worked on by the Wright State Ion Engine Modeling Group. Performing detailed and accurate simulations of ion engines can lead to millions of dollars in savings in development costs.
5490 RUR
Nonlinear wave dynamics in space plasmas ion acoustic solitary wave in an ion
This is a companion monograph to Ma & St-Maurice: Ion Kinetic Theory of Auroral Plasmas, LAP Lambert Academic Publishing, 2011. Nonlinear waves observed in space plasmas are featured by simple-wave solitary structures and amplitude-modulated oscilliton wavepackets. Their wavefields are so strong that the traditional weak-field KdV formulation is not suitable to be adopted. A self-similar two-fluid model is thus used to account for the excitation, propagation, and effects of large-amplitude solitary waves in space plasmas. Both Cartesian and cylindrical geometries are considered. After introducing two mathematical methods usually used for classical solitary waves, generic, exact modelings are described on a step-by-step basis to characterize the evolution from amplitude-unmodulated simple-wave soliton modes to amplitude-modulated oscilliton ones. The effects of nonlinear waves on transverse ion heating and ion-cyclotron frequency broadening are discussed in details by employing a simple magnetic flux tube model. A summary and limitations of the work are also addressed. The research was also guided by Professor Akira Hirose, Canada Research Chair, University of Saskatchewan, Canada.
7790 RUR
Ion-acoustic Waves in Nonextensive Electron-positron-ion Plasmas ion acoustic solitary wave in an ion
In this book, a precise theoretical investigation is made on nonlinear propagation of ion-acoustic (IA) waves in electron-positron-ion plasmas (containing nonextensive electrons and positrons, and inertial ions). The Korteweg-de Vries (K-dV), the modified K-dV, the Gardner, the Burgers, and the modified Burgers equations are derived by using the reductive perturbation method. The basic features of nonlinear phenomena (solitons ans shocks)are briefly studied. The properties of nonlinear IA waves are significantly modified by the effects of nonplanar geometry, ion kinematic viscosity, and the degree of nonextensivity. The important findings of our results in astrophysical plasmas like stellar polytropes, hadronic matter, quark-gluon plasma, dark-matter halos, and so on are pinpointed in this book.
4929 RUR
Structural configuration study for an acoustic wave sensor ion acoustic solitary wave in an ion
Acoustic sensors have been developed for many years. However, most acoustic sensors in application are chemical sensors which rely on the chemical material principle to predict mechanical vibration response signals subject to acoustics waves. In this book, we propose the new acoustic wave detection approach, considering that a continuous structure such as beam or plate with several response characteristics from an acoustic excitation can be a candidate for a sensor used to locate an acoustic source. Acoustic waves will be successfully reconstructed only if this inverse method provides bounds to the ill-conditioned results during the identification process. So the Tikhonov regularization technique is employed for the wave reconstruction work from responses. Effects of sensor design parameters, such as material properties,sensor structure dimensions and random noise background on the wave detection quality have been evaluated. Results show that such an approach is very good and reliable, it can be practical in acoustic sensing and will have wide applications in the field of acoustic wave sensing, especially, in the areas of security and disaster recovery by using qualified sensors.
5790 RUR
Embedded Metal Nanoparticles by Ion Beam Mixing ion acoustic solitary wave in an ion
Over the last many year, ion beam implantation/irradiation has played an important role in fundamental studies and in development of new technologies as well. The present book includes the work exploring the use of ion beams in nanotechnology. Ion beam irradiation has become an unique tool for fabricating and engineering the nanostructures not only at the surface but also embedded in the matrix. This work includes the use of ion beams ranging from low energy (keV) to high energy (MeV)to fabricate and engineering the properties of metal nanopartices embedded in polymer matrix. This book, thus, provides the basic understanding of ion beam interaction with materials, chemical and physical modifications of materials, synthesis of nanopartices and tailoring of their properties in thin films.
4839 RUR
Gel polymer electrolytes and effects of swift heavy ion irradiation ion acoustic solitary wave in an ion
The global energy crisis and environmental pollution have experienced an enormous push for development of alternative energy sources with an efficient energy storage system. Among the different energy storage systems, lithium ion battery is the most attractive one due to high energy density and long cycle life. One of the key components of these lithium or lithium ion batteries is the ion conducting polymer electrolyte. This book provides the scientific approaches to synthesize and characterize different gel and composite gel polymer electrolyte systems for possible application in lithium ion batteries. An attempt has been made in this book to investigate the basic ion conduction mechanism involved in the formation of polymer electrolytes and develop new polymer gel electrolyte systems which have high ionic conductivity and electrochemically stable. Another approach described in the book is the ion beam modification of materials. The effect of swift heavy ions irradiation on ionic conductivity of gel polymer electrolytes is also discussed in this context. This book will be beneficial for the students and researchers working on polymer electrolyte materials for lithium ion battery.
5490 RUR
Inorganic Ion-exchangers ion acoustic solitary wave in an ion
An ion-exchange is an established unit operation and is an important supplement to procedures such as filtration, distillation and adsorption. In the laboratories, ion-exchangers are used as an aid in analytical and preparative chemistry. However, the most important application is still the purification and demineralization of water, a perennial challenge since the time of Aristotle and Moses and a task which the growth of population and industries has made even more pressing than ever before. The inorganic ion-exchangers exhibit high selectivities for specific ions resulting in the separation factors much larger than those exhibited by organic resins. The inorganic ion-exchangers unlike organic ion-exchangers have rigid structures and do not undergo appreciable dimensional change during the ion-exchange reactions. The rigid structure leads to specific and unusual selectivities. Earlier attention was focused on hydrous oxides since it was known that they sorbed or co-precipitated many ions. It was soon discovered that hydrous oxides combined with anions such as phosphates, vanadates, molybdates and antimonates produced superior ion-exchangers.
5890 RUR
Linear And Nonlinear Waves In Nonthermal Dusty Plasmas ion acoustic solitary wave in an ion
Recently the analysis of nature and characteristic of the nonlinear electrostatic waves of dusty plasmas has grown a deep attention to the Researches of Computational Plasma Science. In this book, a rigorous theoretical investigation has been made on linear and nonlinear propagation of dust-ion-acoustic (DIA) waves in a dusty plasma with nonthermal distribution of plasma particles. The linear dispersion relation of the DIA waves, which exist in such an unmagnetized dusty plasma system has been discussed both analytically and graphically in this book. Then the work has been generalized to a magnetized dusty electronegative plasma in order to study obliquely propagating DIA solitary waves, and their multi-dimensional instabilities. The combined effects of the external magnetic field and nonthermal distribution of negative electron, which are found to significantly modify the basic properties of small but finite-amplitude DIA solitary waves, are rigorously examined in this book. The basic features (viz.amplitude, width, stability etc) and the underlying physics of the DIA solitary waves, which are relevant to space and laboratory dusty plasmas, are also briefly discussed in this book.
4929 RUR
Electro-acoustic waves in presence of polarization force ion acoustic solitary wave in an ion
The linear (nonlinear) propagation of the dust-acoustic waves in a nonuniform (two-ion-temperature) dusty plasma has been rigorously investigated. The linear part is aimed to examine the effects of dust density nonuniformity and the polarization force (PF), consists of electrons, ions and inertial arbitrarily charged dust whereas nonlinear part is concerned with solitary waves and double layers with two-ion-temperature plasma. Comprehensive and up-to-date theme of PF inherits from nonuniformity, would substantially assist anyone to gain a thorough knowledge including its mountingly consequential roles in linear wave dynamics. Nonlinear Gardner solitons exist around the critical value. The emphasis of PF is laid more on the fundamental principles as well as its implications, contemporary applications, from recent reviews than on minute details. Our present survey relevant to the electrostatic linear-nonlinear structures observed in cosmic and laboratory plasmas, is of utmost importance.
5790 RUR
Solitary waves, double layers, and instabilities in quantum plasmas ion acoustic solitary wave in an ion
Quantum plasmas have attracted baronial interest due to their enormous applications in dense plasma particularly in different astrophysical and cosmological systems e.g., core of big planets like Jupiter and white dwarf stars magnetars , warm dense matter, interstellar or molecular clouds, planetary rings, comets, interior of white dwarf stars, etc as well as in semiconductors, thin films and nano-metallic structures , quantum diodes, compressed plasmas produced by intense laser and charged particle beams for producing fusion energy and high-energy electrons and positrons. This field is opening a window of new opportunities for carrying out cutting edge fundamental research and controlled thermonuclear fusion from compressed plasmas employing magnetoinertial confinement schemes that use high energy density plasmas created by ultra-intense laser and relativistic charged particle beams. In this book, we have studied the nonlinear propagations of quantum ion-acoustic, quantum dust-ion-acoustic, and quantum dust-acoustic waves in dense quantum plasmas theoretically. Readers of this book could gather a sound knowledge about this interesting field of science.
5790 RUR
Electrophysical Processes in Electrolytes-Experiments and Simulations ion acoustic solitary wave in an ion
The ions in electrolyte solution can be rearranged by acoustic wave to create electric potential. This effect was predicted by Debye in 1933. The reverse effect, called electro-acoustic (EA) effect, is the excitation of acoustic wave by applied electric field. In Part I, different experimental schemes, for excitation and detection of EA signals in electrolytes, are described and discussed. Efforts have been made to relate the obtained EA signals with characteristic features of the electrolyte solution. In Part II, the nonlinear transport equations and the Poisson equation are solved numerically. Transient processes, in linear and nonlinear regime, have been evaluated. Different problems have been treated: Ion-pairs formatiion and migration, Enhanced electrode capacity with possible application to supercapacitors, Non-equilibrium modification of the Einstein-Nernst relation between ion mobility and diffusivity etc. This book may be of interest to researchers and engineers, studying the properties of electrolyte solutions.
3939 RUR