Classical And Quantum Description Of Plasma And Radiation In Strong Fields
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Classical and Quantum Description of Plasma and Radiation in Strong Fields by Fabien Niel Pdf
This thesis presents several important aspects of the plasma dynamics in extremely high intensity electromagnetic fields when quantum electrodynamics effects have to be taken into account. This work is of utmost importance for the forthcoming generation of multipetawatt laser facilities where this physics will be tested. The first part consists of an introduction that extends from classical and quantum electrodynamics in strong fields to the kinetic description of plasmas in the interaction with such fields. This can be considered as an advanced tutorial which would be extremely useful to researchers and students new to the field. The second part describes original contributions on the analysis of the signatures of classical and quantum radiation reaction on the distribution function of the charged particles and of the photon spectrum, and leads to significant advances on this topic. These results are then extended to the analysis of the so-called QED cascades which are of central importance for a better understanding of some astrophysical phenomena and basic physics problems. Finally, the book discusses future directions for the high intensity laser–plasma interaction community. The results presented in this thesis are expected to become more and more relevant as the new multipetawatt facilities become operative.
Classical and Quantum Description of Plasma and Radiation in Strong Fields by Fabien Niel (docteur en physique).) Pdf
With the advent of the new generation of petawatt lasers, it will become more and more important in the near future to study strong-field QED. As previously mentioned, it can either serve as a new nonperturbative regime for physics beyond the standard model, allow to understand extreme astro-physics events (such as magnetars), or even become a dominant effect in laser-plasma interaction.However, in all these cases, the system under consideration is not a single particle as usually consid-ered in pure SFQED works, but will be a collection of such particles (either electron/photon beams or pair plasmas etc.). It will therefore be important to understand how the behavior of single particles affect the overall state of the system, and in particular the shape of its electron distribution function and of its radiated spectrum. This is what this work is focused on. The manuscript is organized as fol-lows In chapter 2, we introduce the basis of classical electrodynamics and derive all the results and notations that will be useful in the rest of this thesis. We explain why any accelerated charge radiates an electromagnetic field and compute the spectrum radiated by an ultrarelativistic electron. We show that it follows the well-know synchrotron spectrum. When the energy radiated by the electron is no longer negligible, the emitted radiation will counteract on the trajectory of the particle itself. This is the so-called radiation reaction. We derive the Lorentz-Abraham-Dirac (LAD) equation, that describes the motion of an electron, taking into account radiation reaction (RR). We show that this equation presents unphysical solutions and deduce the Landau-Lifshitz (LL) equation, that we will use to describe RR in the classical regime in the rest of this work. We then consider the solution of the LL equation in simplified fields such as plane-waves or constant uniform magnetic fields. The classical radiation dominated regime (CRDR) is described and the limit of validity of the classical description analyzed. Chapter 3 : when the electron quantum parameter is of the order of unity, emitted photons can have an energy close to that of the emitting electron. In this case, radiation reaction can no longer be treated classically. In this chapter, we present the basis of quantum electrodynamics (QED), which is the framework in which such quantum effects can be computed. We derive the Volkov states that take into account exactly the nonperturbative coupling between the electron and the strong background field. These fields are used in the so-called Furry picture in order to compute the different QED pro-cesses such as the nonlinear Compton scattering or the nonlinear Breit-Wheeler process. The cross-sections for these two processes are then analyzed. Chapter 4 : so far, the description of radiation concerned only single particles. Here we introduce the Vlasov equation that describes the evolution of the function distribution of a set a particles. We then see how to modify this equation in order to take into account classical and quantum RR. The numeri-cal resolution of this equation, together with Maxwell's equations is then described, in particular through the well-known PIC loop. We describe how to modify this classical PIC loop in order to in-clude classical and quantum RR, in particular through the use of a Monte-Carlo module. Chapter 5 : we present the state of the art on RR in our community and a brief introduction to the sec-ond part of this thesis where most of the original results are reported. Chapter 6 : after a brief reminder of the Landau-Lifshitz (LL) equation, which describes radiation re-action (RR) in classical electrodynamics (CED) as a deterministic force in the particle momentum equation, we recall the emission properties of a quantum radiating electron. We then turn our attention to the linear Boltzmann equation which is at the center of the kinetic description of RR explored in this thesis [...].
Introduction to Relativistic Statistical Mechanics by Rmi Hakim Pdf
This is one of the very few books focusing on relativistic statistical mechanics, and is written by a leading expert in this special field. It started from the notion of relativistic kinetic theory, half a century ago, exploding into relativistic statistical mechanics. This will interest specialists of various fields, especially the (classical and quantum) plasma physics. However, quantum physics ? to which a major part is devoted ? will be of more interest since, not only it applies to quantum plasma physics, but also to nuclear matter and to strong magnetic field, cosmology, etc. Although the domain of gauge theory is not covered in this book, the topic is not completely forgotten, in particular in the domain of plasma physics. This book is particularly readable for graduate students and a fortiori to young researchers for whom it offers methods and also appropriate schemes to deal with the current problems encountered in astrophysics, in strong magnetic, in nuclear or even in high energy physics.
The Quantum Theory of Radiation by Walter Heitler Pdf
The first comprehensive treatment of quantum physics in any language, this classic introduction to the basic theory remains highly recommended and in wide use, both as a text and as a reference. A unified and accurate guide to the application of radiative processes, it explores the mathematics and physics of quantum theory. 1954 edition.
A study of radiative-collisional phenomena in neutral and ionized gases, focusing on a "perturbed atom", i.e an atom under the influence of different perturbations in plasmas, namely by electrical and magnetic fields. The treatment covers fundamental aspects of modern physics, such as atomic quantum mechanics and quantum optics, radiation and collisional processes in plasmas and gases, nonlinear laser spectroscopy, and plasma diagnostics.
Theory of Fully Ionized Plasmas by Günter Ecker Pdf
Theory of Fully Ionized Plasmas deals with the theory of fully ionized plasmas, with emphasis on their resistant groups, namely, electrons and nuclei. A model of the fully ionized plasma is presented based in part on the assumption that the system is sufficiently large so that the behavior of its individuals is not affected by the presence of boundaries. Where this assumption is applied the fully ionized plasma is called a Coulomb system. Comprised of six chapters, this book begins with a discussion on the Coulomb system as the fully ionized system in the quasi-static electromagnetic field. The equilibrium and non-equilibrium states of this Coulomb system, with or without individual particle correlations, are considered. The macroscopic and microscopic qualities of the Coulomb system are also described, together with its partition function and Landau's solution to the Vlasov equation. The second part explores the fully ionized system in the general electromagnetic field and addresses single-particle radiation and many-particle interactions with electromagnetic fields. This monograph is intended for graduate students and research workers in the field of plasma physics, astrophysics, or related topics.
Relativistic Nonlinear Electrodynamics by Hamlet Karo Avetissian Pdf
This revised edition of the author’s classic 2006 text offers a comprehensively updated review of the field of relativistic nonlinear electrodynamics. It explores the interaction of strong and super-strong electromagnetic/laser radiation with the electromagnetic quantum vacuum and diverse types of matter – including free charged particles and antiparticles, acceleration beams, plasma and plasmous media. The appearance of laser sources of relativistic and ultra-relativistic intensities over the last decade has stimulated investigation of a large class of processes under such super-strong radiation fields. Revisions for this second edition reflect these developments and the book includes new chapters on Bremsstrahlung and nonlinear absorption of superintense radiation in plasmas, the nonlinear interaction of relativistic atoms with intense laser radiation, nonlinear interaction of strong laser radiation with Graphene, and relativistic nonlinear phenomena in solid-plasma targets under supershort laser pulses of ultrarelativistic intensities. The only book devoted to the subject of relativistic nonlinear electrodynamics, this second edition will be a valuable resource for graduate students and researchers involved in any aspect of the field, including those working with intense x-ray – gamma-ray lasers, the new generation of small size laser-plasma accelerators of superhigh energies and high-brightness particle beams.
The field of quantum plasmas has a long and diverse tradition. The subject is becoming of increasing interest. This book synthesizes two fields: classical kinetic theory of collisionless plasmas and quantum electrodynamics. The whole approach is new and not seen in other texts. The book therefore provides a comprehensive introduction to a more general formalism for plasma kinetic and dispersion theory.
Dynamics of Charged Particles and their Radiation Field by Herbert Spohn Pdf
This book provides a self-contained and systematic introduction to classical electron theory and nonrelativistic quantum electrodynamics. The first half of the book covers the classical theory in much detail, which the second half explores quantum theory, leading to a coherent presentation of non-relativistic quantum electrodynamics. It covers the interaction between charges and the Maxwell field, with particular focus on the derivation of radiative friction. It provides a coherent presentation with emphasis on radiation phenomena and relaxation to the ground state, space-adiabatic limit, effective mass and g-factor, and removal of the ultraviolet cut-off.
Author : David John Edward Ingram Publisher : Oxford University Press, USA Page : 126 pages File Size : 46,8 Mb Release : 1973 Category : Science ISBN : UOM:39015021686533
An Introduction to the Atomic and Radiation Physics of Plasmas by G. J. Tallents Pdf
The physics of emission, absorption and interaction of light in astrophysics and in laboratory plasmas is developed from first principles and applied across various fields, from quantum mechanics, electricity and magnetism, to statistical physics. This text links undergraduate level atomic and radiation physics with the advanced material required for postgraduate study and research.
