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Books > Science & Mathematics > Physics > Atomic & molecular physics
Theory of Ionization and Electron Emission: Theory of Electron Ejection from Matter by Highly Charged Ion Impact; J.H. Macek. Auger Processes at Metallic Surfaces: Auger Processes at Surfaces; A. Niehaus. Kinetic Auger Processes and Shell Effects: Electron Emission from Silicon Induced by Bombardment with Oxygen Ions; E.A. Maydell. Kinetic Electron Emission from Thin Foils: Electron Ejection Induced by Fast Projectiles; G. Schiwietz. Surface Effects in Kinetic Electron Emission: Electron Emission Phenomena in Grazing Collisions of Fast Ions with Surfaces; H. Winter, et al. Spin Polarized Electron Emission: IonInduced Electron Emission from Magnetic and Nonmagnetic Surfaces; C. Rau, et al. Electron Emission and Charging of Insulators: Secondary Electron Emission from Insulators; J. Schou. Ionization Effects in Semiconductors and Insulators: Ionization Tracks; R.E. Johnson. 23 additional articles. Index.
From fabrication to testing and modeling this monograph covers all aspects on the materials class of magneto active polymers. The focus is on computational modeling of manufacturing processes and material parameters. As other smart materials, these elastomers have the ability to change electrical and mechanical properties upon application of magnetic fields. This allows for novel applications ranging from biomedical engineering to mechatronics.
State-of-the-art survey by leading experts in the field. Major foci are superheavy nuclei and neutron-rich exotic nuclei. In addition new developments in nuclear fission and nuclear cluster decay are shown. Finally developments in relativistic heavy ion collisions and the physics of supercritical fields are detailed.
Atoms in Intense Laser Fields: Inhibition of Atomic Ionization in Strong Laser Fields; B. Piraux, E. Huens. Optical Analogs of Model Atoms in Fields; P.W. Milonni. Molecules in Intense Laser Fields: Intense Field Dynamics of Diatomic Molecules; L.F. DiMauro, et al. Excitation of Molecular Hydrogen in Intense Laser Fields; H. Helm, et al. High Intensity Molecular Multiphoton Ionization; G.N. Gibson, et al. Atomic Coherences: Coherence in Strong Field Harmonic Generation; A. L'Huillier, et al. Coherent Interactions within the Atomic Continuum; P. Lambropoulos, et al. Molecular Coherences: Femtosecond Pulse Shaping and Excitation of Molecular Coherences; A.M. Weiner, et al. Coherence in the Control of Molecular Processes; P. Brumer, M. Shapiro. Optimal Control of Molecular Motion; H. Rabitz. 25 additional articles. Index.
The propagation of light in 'dense media' where dipole-dipole interactions play a role is a fundamental topic that was first studied in the work of Clausius, Mossotti, Lorenz and Lorentz in the latter half of the nineteenth century. However, until recently there remained some areas of controversy: for example, whereas the Lorentz model for a gas predicts a resonance shift, a discrete dipole model does not. This thesis makes the first combined measurement of both the Lorentz shift and the associated collective Lamb shift. This clear experimental result stimulated new theoretical work that has significantly advanced our understanding of light propagation in interacting media.
This book describes selected problems in contemporary spectroscopy in the context of quantum mechanics and statistical physics. It focuses on elementary radiative processes involving atomic particles (atoms, molecules, ions), which include radiative transitions between discrete atomic states, the photoionization of atoms, photorecombination of electrons and ions, bremsstrahlung, photodissociation of molecules, and photoattachment of electrons to atoms. In addition to these processes, the transport of resonant radiation in atomic gases and propagation of infrared radiation in molecular gases are also considered. The book subsequently addresses applied problems such as optical pumping, cooling of gases via laser resonance radiation, light-induced drift of gas atoms, photoresonant plasma, reflection of radio waves from the ionosphere, and detection of submillimeter radiation using Rydberg atoms. Lastly, topical examples in atmospheric and climate change science are presented, such as lightning channel glowing, emission of the solar photosphere, and the greenhouse phenomenon in the atmospheres of the Earth and Venus. Along with researchers, both graduate and undergraduate students in atomic, molecular and atmospheric physics will find this book a useful and timely guide.
Thermal processes are ubiquitous and an understanding of thermal phenomena is essential for a complete description of the physics of nanoparticles, both for the purpose of modeling the dynamics of the particles and for the correct interpretation of experimental data. The second edition of this book follows the logic of first edition, with an emphasis on presentation of literature results and to guide the reader through derivations. Several topics have been added to the repertoire, notably magnetism, a fuller exposition of aggregation and the related area of nucleation theory. Also a new chapter has been added on the transient hot electron phenomenon. The book remains focused on the fundamental properties of nanosystems in the gas phase. Each chapter is enriched with additional new exercises and three Appendices provide additional useful material.
A Modern View of Hadrons; H. Georgi. Hadron Production and Structure at Small Distances; B.R. Webber. The Physics of GBPIiGBP and D Mesons; M.S. Witherell. Top Quark Physics at Hadron Colliders; W.C. Carithers, Jr. New Directions in Calorimetry; W.J. Willis. Index.
Relativistic Effects on Periodic Trends.- Atoms.- Relativistic Atomic Structure and Electron-Atom Collisions.- On the Accuracy of Oscillator Strengths.- Atomic Structure Calculations in Breit-Pauli Approximation.- Relativistic Calculations of Parity Non-Conserving Effects in Atoms.- High Precision Relativistic Atomic Structure Calculations Using the Finite Basis Set Approximation.- Relativistic Calculations of Electron Impact Ionisation Cross-Sections of Highly Charged Ions.- Molecules.- Nonsingular Relativistic Perturbation Theory and Relativistic Changes of Molecular Structure.- Basis Set Expansion Dirac-Fock SCF Calculations and MBPT Refinement.- Comments.- Polyatomic Molecular Dirac-Hartree-Fock Calculations with Gaussian Basis Sets.- Open Shell Relativistic Molecular Dirac-Hartree-Fock SCF-Program.- General Contraction in Four-Component Relativistic Hartree-Fock Calculations.- Accurate Relativistic Dirac-Fock and MBPT Calculations on Argon with Basis Sets of Contracted Gaussian Functions.- Comments.- Relativistic Many-Body Perturbation Theory of Atomic and Molecular Electronic Structure.- Solid State.- Relativistic Density-Functional Theory for Electrons in Solids.- Influence of Relativistic Effects on the Magnetic Moments and Hyperfine Fields of 5d-Impurity Atoms Dissolved in Ferromagnetic Fe.- Relativistic Spin-Polarized Density-Functional Theory: Simplified Method for Fully Relativistic Calculations.- Theory of Magnetocrystalline Anisotropy.- The Spin Polarized Photoemission from Non-Magnetic Metals.- Theory of Magnetic X-Ray Dichroism.- Participants.
Matter wave interferometry is a promising and successful way to explore truly macroscopic quantum phenomena and probe the validity of quantum theory at the borderline to the classic world. Indeed, we may soon witness quantum superpositions with nano to micrometer-sized objects. Yet, venturing deeper into the macroscopic domain is not only an experimental but also a theoretical endeavour: new interferometers must be conceived, sources of noise and decoherence identified, size effects understood and possible modifications of the theory taken into account. This thesis provides the theoretical background to recent advances in molecule and nanoparticle interferometry. In addition, it contains a physical and objective method to assess the degree of macroscopicity of such experiments, ranking them among other macroscopic quantum superposition phenomena."
This new edition presents the essential theoretical and analytical methods needed to understand the recent fusion research of tokamak and alternate approaches. The author describes magnetohydrodynamic and kinetic theories of cold and hot plasmas in detail. The book covers new important topics for fusion studies such as plasma transport by drift turbulence, which depend on the magnetic configuration and zonal flows. These are universal phenomena of microturbulence. They can modify the onset criterion for turbulent transport, instabilities driven by energetic particles as well as alpha particle generation and typical plasma models for computer simulation. The fusion research of tokamaks with various new versions of H modes are explained. The design concept of ITER, the international tokamak experimental reactor, is described for inductively driven operations as well as steady-state operations using non-inductive drives. Alternative approaches of reversed-field pinch and its relaxation process, stellator including quasi-symmetric system, open-end system of tandem mirror and inertial confinement are also explained. Newly added and updated topics in this second edition include zonal flows, various versions of H modes, and steady-state operations of tokamak, the design concept of ITER, the relaxation process of RFP, quasi-symmetric stellator, and tandem mirror. The book addresses graduate students and researchers in the field of controlled fusion.
This book is exceptional in offering a thorough but accessible introduction to calorimetry that will meet the needs of both students and researchers in the field of particle physics. It is designed to provide the sound knowledge of the basics of calorimetry and of calorimetric techniques and instrumentation that is mandatory for any physicist involved in the design and construction of large experiments or in data analysis. An important feature is the correction of a number of persistent common misconceptions. Among the topics covered are the physics and development of electromagnetic showers, electromagnetic calorimetry, the physics and development of hadron showers, hadron calorimetry, and calibration of a calorimeter. Two chapters are devoted to more promising calorimetric techniques for the next collider. Calorimetry for Collider Physics, an introduction will be of value for all who are seeking a reliable guide to calorimetry that occupies the middle ground between the brief chapter in a generic book on particle detection and the highly complex and lengthy reference book.
This work focuses on new electromagnetic decay mode in nuclear physics. The first part of the thesis presents the observation of the two-photon decay for a transition where the one-photon decay is allowed. In the second part, so called quadrupole mixed-symmetry is investigated in inelastic proton scattering experiments. In 1930 Nobel-prize winner M. Goeppert-Mayer was the first to discuss the two-photon decay of an exited state in her doctoral thesis. This process has been observed many times in atomic physics. However in nuclear physics data is sparse. Here this decay mode has only been observed for the special case of a transition between nuclear states with spin and parity quantum number 0+. For such a transition, the one-photon decay - the main experimental obstacle to observe the two-photon decay - is forbidden. Furthermore, the energy sharing and angular distributions were measured, allowing conclusions to be drawn about the multipoles contributing to the two-photon transition. Quadrupole mixed-symmetry states are an excitation mode in spherical nuclei which are sensitive to the strength of the quadrupole residual interaction. A new signature for these interesting states is presented which allows identification of mixed-symmetry states independently of electromagnetic transition strengths. Furthermore this signature represents a valuable additional observable to test model predictions for mixed-symmetry states.
In this volume, contributions covering the theoretical and practical aspects of multicomponent crystals provide a timely and contemporary overview of the state-of-the art of this vital aspect of crystal engineering/materials science. With a solid foundation in fundamentals, multi-component crystals can be formed, for example, to enhance pharmaceutical properties of drugs, for the specific control of optical responses to external stimuli and to assemble molecules to allow chemical reactions that are generally intractable following conventional methods. Contents Pharmaceutical co-crystals: crystal engineering and applications Pharmaceutical multi-component crystals: improving the efficacy of anti-tuberculous agents Qualitative and quantitative crystal engineering of multi-functional co-crystals Control of photochromism in N-salicylideneaniline by crystal engineering Quinoline derivatives for multi-component crystals: principles and applications N-oxides in multi-component crystals and in bottom-up synthesis and applications Multi-component crystals and non-ambient conditions Co-crystals for solid-state reactivity and thermal expansion Solution co-crystallisation and its applications The salt-co-crystal continuum in halogen-bonded systems Large horizontal displacements of benzene-benzene stacking interactions in co-crystals Simultaneous halogen and hydrogen bonding to carbonyl and thiocarbonylfunctionality Crystal chemistry of the isomeric N,N'-bis(pyridin-n-ylmethyl)-ethanediamides, n = 2, 3 or 4 Solute solvent interactions mediated by main group element (lone-pair) (aryl) interactions
The Lectures: Conjugated Polymers in Layered Hosts; M.G. Kanatzidis, et al. Staging in Intercalated Graphites, Polymers, and Fullerenes; E.J. Mele. Seminars and Communications: Size-Mismatch Melting in Two Dimensions; N. Mousseau, M.F. Thorpe. Tight Binding Molecular Dynamics for Intercalation Chemistry; M. Menon, et al. Local Oscillator Model for Superconducting Fullerenes; Z. Gedik, S. Ciraci. Some Optical Properties of Fullerenes; B. Friedman. Photoluminescence of Solid State Fullerenes; H.J. Byrne, et al. Magnetic Properties of Alkali Metal Intercalated Fullerides; P. Byszewski, et al. Charge Transport and Percolation in Conducting Polymers; J. Voit. Overview on the Chemistry of Intercalation in Graphite of Binary Metallic Alloys; P. Lagrange. Mineralomimetic Inclusion Behavior of Cadmium Cyanide Systems; T. Iwamoto, et al. 36 additional articles. Index.
Invited Papers.- Theory of Electron Collisions in Partially Ionized Gases.- Electron Collisions with Molecules.- Electron Transport in Partially Ionized Gases.- Non Equilibrium Plasma Kinetics.- Modeling High Pressure Electric Discharges: Applications to Excimer Lasers.- Energy Transfer in Atom/Molecule Collisions with Molecules and Surfaces.- Reactivity Calculations for Elementary Atom-Diatom Processes and Applications to Non-Equilibrium Systems.- Excimer Lasers: Status and Perspectives.- Fundamental Properties of RF Glow Discharges: An Approach Based on Self-Consistent Numerical Models.- Theory of High-Frequency Discharges.- Volume Production of Hydrogen Negative Ions.- Laser Diagnostics of a Hydrogen Discharge.- Hydrogen-Surface Interactions.- Plasma Assisted Thin Film Production WC, a-C: H and Diamond Films.- Electric Discharge Lamps.- Contributed Papers.- Inelastic Scattering of Electrons From H2 Molecule and First-Born Approximation: Role Of Correlation.- Electron-Molecule Collision Cross Sections for Etching Gases.- Electron Collisions in Gas Switches.- Theory of e- -Diatom Scattering at Low Energies.- A Parameter-Free Theoretical Model for Low-Energy Electron Scattering from Polyatomic Molecules.- Electron Collision Cross-Sections Determined from Beam and Swarm Data by Boltzmann Analysis.- Electron Collision Cross Sections Involving Excited States.- Electron Collision Cross Sections Involving Excited States.- New Theoretical Approaches for Studying Electron Collisions with Small Molecules.- Ion-Neutral Reactions.- Energy Pooling Collisions: A Step Towards Ionization.- Potential Energy Curves of Open Shell Systems (Excimers) from Molecular Beam Scattering.- Molecular Beam Measurements of Ionization Cross Sections Relevant to Thermal Plasmas and Excimer Laser Systems.- The Silent Discharge and Its Application to Ozone and Excimer Formation.- Non Equilibrium Excimer Laser Kinetics.- Study of A Photoswitched Discharge for Excimer Laser.- A Self-Consistent Monte Carlo Modeling of RF Non-Equilibrium Plasma.- Charged Particles Dynamics in Electropositive Glow Discharges Probed by Optical Diagnostics.- Problems in the Experimental Determination of Electron Energy Distribution Function in RF Discharges.- Spectroscopic Diagnostics in the Cathode Fall and Negative Glow of a Nitrogen Glow Discharge.- Electron Kinetics in RF Discharges.- A Radiofrequency Trap for Tests on Production and Excitation of Ions.- Gas-Phase and Gas-Surface Interactions of Vibrationally Excited Hydrogen Molecules.- Translational Energy Distribution Functions of H+ and H in H2 Volume Discharges.- Numerical Simulation on Tandem Negative Ion Source.- Atomic and Molecular Surface and Volume Processes in the Analysis of Negative Hydrogen Discharges.- Interpretation and Analysis of the H2 Vibrational Distribution in a Hydrogen Discharge.- Electron Energy Distribution Functions in Magnetic Multipole Plasmas.- Effects Due to Negative Ions and Particles in Plasmas.- Electron and Vibrational Kinetics in Molecular Discharges.- Laser Diagnostic of Radio-Frequency Oxygen Plasma.- Spectroscopy and Kinetics of an Oxygen Glow Discharge.- Simulation Work in Noble Gas Radiation Detectors.- A Description of The Non-Equilibrium Behavior of Electrons in Matter: Macro-Kinetics.- Thermalization and Transport of Sputtered Particles in Glow Discharges.- The Free Electron Laser: A Simple Quantum Picture.- Electron and Photon Collisions in Strong Laser Fields.- Resonant Photopumping of Lithiumlike Ions in Laser-Produced Plasmas.- Ionization and Deionization of Electron Beam Disturbed Air.- Re-Entry Problems.- Diagnostics of Atomic Species Near the Electrodes of a Fluorescent Lamp.- Excited State Diagnostics in High Pressure Arc Lamps.- Participants
Various experimental techniques have been advanced in recent years to measure non-equilibrium energy transformations on themicroscopic scale of single molecules. In general, the systems studied inthe correspondingexperiments are exposed to strong thermal fluctuations and thus the relevant energetic variables such as work and heat become stochastic. This thesis addresses challenging theoretical problems in this active field of current research: 1) Exact analytical solutions of work and heat distributions for isothermal non-equilibrium processes in suitable models are obtained; 2) Corresponding solutions for cyclic processes involving two different heat reservoirs are found; 3) Optimization of periodic driving protocols for such cyclic processes with respect to maximal output power, efficiency and minimal power fluctuations is studied. The exact solutions for work and heat distributionsprovide areference for theoretical investigations of more complicated models, giving insight into the structure of the tail of work distributions andserving asvaluable test cases for simulations of the underlying stochastic processes."
This book covers the role of water in global atmospheric phenomena, focussing on the physical processes involving water molecules and water microparticles. It presents the reader with a detailed look at some of the most important types of global atmospheric phenomena involving water, such as water circulation, atmospheric electricity and the greenhouse effect. Beginning with the cycle of water evaporation and condensation, and the important roles played by the nucleation and growth processes of water microdroplets, the book discusses atmospheric electricity as a secondary phenomenon of water circulation in the atmosphere, comprising a chain of processes involving water molecules and water microdroplets. Finally, the book discusses aspects of the molecular spectroscopy of greenhouse atmospheric components, showing how water molecules and water microdroplets give the main contribution to atmospheric emission in the infrared spectrum range. Featuring numerous didactic schematics and appendices detailing all necessary unit conversion factors, this book is useful to both active researchers and doctoral students working in the fields of atmospheric physics, climate science and molecular spectroscopy.
This expanded and updated well-established textbook contains an advanced presentationof quantum mechanics adapted to the requirements of modern atomic physics. Itincludes topics of current interest such as semiclassical theory, chaos, atom optics andBose-Einstein condensation in atomic gases. In order to facilitate the consolidationof the material covered, various problems are included, together with completesolutions. The emphasis on theory enables the reader to appreciate the fundamentalassumptions underlying standard theoretical constructs and to embark on independentresearch projects. The fourth edition of Theoretical Atomic Physics contains anupdated treatment of the sections involving scattering theory and near-thresholdphenomena manifest in the behaviour of cold atoms (and molecules). Special attentionis given to the quantization of weakly bound states just below the continuum thresholdand to low-energy scattering and quantum reflection just above. Particular emphasisis laid on the fundamental differences between long-ranged Coulombic potentialsand shorter-ranged potentials falling off faster than 1/r2 at large distances r. The newsections on tunable near-threshold Feshbach resonances and on scattering in two spatialdimensions also address problems relevant for current and future research in the fieldof cold (and ultra-cold) atoms. Graduate students and researchers will find this book avaluable resource and comprehensive reference alike.
This thesis focuses on the study and characterization of entanglement and nonlocal correlations constrained under symmetries. It includes original results as well as detailed methods and explanations for a number of different threads of research: positive partial transpose (PPT) entanglement in the symmetric states; a novel, experimentally friendly method to detect nonlocal correlations in many-body systems; the non-equivalence between entanglement and nonlocality; and elemental monogamies of correlations. Entanglement and nonlocal correlations constitute two fundamental resources for quantum information processing, as they allow novel tasks that are otherwise impossible in a classical scenario. However, their elusive characterization is still a central problem in quantum information theory. The main reason why such a fundamental issue remains a formidable challenge lies in the exponential growth in complexity of the Hilbert space as well as the space of multipartite correlations. Physical systems of interest, on the other hand, display symmetries that can be exploited to reduce this complexity, opening the possibility that some of these questions become tractable for such systems.
Our understanding of nature, and in particular of physics and the laws governing it, has changed radically since the days of the ancient Greek natural philosophers. This book explains how and why these changes occurred, through landmark experiments as well as theories that - for their time - were revolutionary. The presentation covers Mechanics, Optics, Electromagnetism, Thermodynamics, Relativity Theory, Atomic Physics and Quantum Physics. The book places emphasis on ideas and on a qualitative presentation, rather than on mathematics and equations. Thus, although primarily addressed to those who are studying or have studied science, it can also be read by non-specialists. The author concludes with a discussion of the evolution and organization of universities, from ancient times until today, and of the organization and dissemination of knowledge through scientific publications and conferences.
This book focuses on the assessment of different coal gasification technologies for the utilization of Russian coals with analyses of economically feasible process chains for preparation of marketable products from high-ash coals. The work presented is important in view of the general competitiveness that marks the future of coal in the world. As the cheapest form of fuel (in comparable terms) coal will undoubtedly be in demand resources in the world. The book consists of parts which include an overview about the major coal characteristics, detailed discussion of fundamental aspects of gasification technologies and gasifiers, an introduction into annex concepts, an overview about different technologies of syngas utilization, technical and economic assessment of several coal-to-liquid and coal-to-chemicals routes, and feasibility demonstration for selected process chains. This book is addressed to the management and engineers of Russian coal companies and scientific staff of Russian research institutions working in the field of coal utilization.
This thesis describes the first detection of a nuclear transition that had been sought for 40 years, and marks the essential first step toward developing nuclear clocks. Atomic clocks are currently the most reliable timekeepers. Still, they could potentially be outperformed by nuclear clocks, based on a nuclear transition instead of the atomic transitions employed to date. An elusive, extraordinary state in thorium-229 seems to be the only nuclear transition suitable for this purpose and feasible using currently available technology. Despite repeated efforts over the past 40 years, until recently we had not yet successfully detected the decay of this elusive state. Addressing this gap, the thesis lays the foundation for the development of a new, better frequency standard, which will likely have numerous applications in satellite navigation and rapid data transfer. Further, it makes it possible to improve the constraints for time variations of fundamental constants and opens up the field of nuclear coherent control.
Extensions to the No-Core Shell Model presents three extensions to the No-Core Shell Model (NCSM) that allow for calculations of heavier nuclei, specifically for the p-shell nuclei. The Importance-Truncated NCSM (IT-NCSM) formulated on arguments of multi-configurational perturbation theory selects a small set of basis states from the initially large basis space in which the Hamiltonian is diagonalized. Previous IT-NCSM calculations have proven reliable, however, there has been no thorough investigation of the inherent error in the truncated IT-NCSM calculations. This thesis provides a detailed study of IT-NCSM calculations and compares them to full NCSM calculations to judge the accuracy of IT-NCSM in heavier nuclei. When IT-NCSM calculations are performed, one often needs to extrapolate the ground-state energy from the finite basis (or model) spaces to the full NCSM model space. In this thesis a careful investigation of the extrapolation procedures was performed. On a related note, extrapolations in the NCSM are commonplace, but up to recently did not have the ultraviolet (UV) or infrared (IR) physics under control. This work additionally presents a method that maps the NCSM parameters into an effective-field theory inspired framework, in which the UV and IR physics are treated appropriately. The NCSM is well-suited to describe bound-state properties of nuclei, but is not well-adapted to describe loosely bound systems, such as the exotic nuclei near the neutron drip line. With the inclusion of the Resonating Group Method (RGM), the NCSM / RGM can provide a first-principles description of exotic nuclei and the first extension of the NCSM.
This book is a wide-ranging survey of the physics of out-of-equilibrium systems of correlated electrons, ranging from the theoretical, to the numerical, computational and experimental aspects. It starts from basic approaches to non-equilibrium physics, such as the mean-field approach, then proceeds to more advanced methods, such as dynamical mean-field theory and master equation approaches. Lastly, it offers a comprehensive overview of the latest advances in experimental investigations of complex quantum materials by means of ultrafast spectroscopy. |
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