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Investigation Of Electron Acceleration And Deceleration In Plasmas
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Book Synopsis Investigation of Electron Acceleration and Deceleration in Plasmas by : Shao-Wei Chou
Download or read book Investigation of Electron Acceleration and Deceleration in Plasmas written by Shao-Wei Chou and published by Sudwestdeutscher Verlag Fur Hochschulschriften AG. This book was released on 2016-05-24 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: This work covers several aspects related to Laser WakeField Acceleration (LWFA). A strong and ultrashort laser pulse can generate plasma waves with accelerating gradients up to 100s GV/m, four orders of magnitude higher than a conventional radio frequency linear accelerator. The LWFA electrons have been characterized as an ultra-short and high brilliance source. These remarkable properties lead to a compact accelerator which is of great scientific interest for building a table-top coherent free electron laser as well as a single-shot electron diffraction device. On the other hand, a new application of LWFA is to utilize the high peak current LWFA electron bunch to drive a wakefield efficiently inside a high density underdense plasma. The resulting wakefield quickly decelerates the driver bunch or accelerates a properly designed witness bunch, and therefore the plasma is utilized as a compact beam dump or an afterburner staged after a regular LWFA.
Book Synopsis Studies of Proton Driven Plasma Wakefield Acceleration by : Yangmei Li
Download or read book Studies of Proton Driven Plasma Wakefield Acceleration written by Yangmei Li and published by Springer Nature. This book was released on 2020-07-15 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis focuses on a cutting-edge area of research, which is aligned with CERN's mainstream research, the "AWAKE" project, dedicated to proving the capability of accelerating particles to the energy frontier by the high energy proton beam. The author participated in this project and has advanced the plasma wakefield theory and modelling significantly, especially concerning future plasma acceleration based collider design. The thesis addresses electron beam acceleration to high energy whilst preserving its high quality driven by a single short proton bunch in hollow plasma. It also demonstrates stable deceleration of multiple proton bunches in a nonlinear regime with strong resonant wakefield excitation in hollow plasma, and generation of high energy and high quality electron or positron bunches. Further work includes the assessment of transverse instabilities induced by misaligned beams in hollow plasma and enhancement of the wakefield amplitude driven by a self-modulated long proton bunch with a tapered plasma. This work has major potential to impact the next generation of linear colliders and also in the long-term may help develop compact accelerators for use in industrial and medical facilities.
Book Synopsis Investigation of Electron Laser Wakefield Acceleration in Novel Plasma Structures by :
Download or read book Investigation of Electron Laser Wakefield Acceleration in Novel Plasma Structures written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Studies of Electron Acceleration Mechanisms in Relativistic Laser-plasma Interactions by :
Download or read book Studies of Electron Acceleration Mechanisms in Relativistic Laser-plasma Interactions written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Electron dynamics in a plasma focus by : Frank Hohl
Download or read book Electron dynamics in a plasma focus written by Frank Hohl and published by . This book was released on 1977 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental Study of Stable Propagation and Efficient Electron Acceleration in Plasmas with Ultra-short Laser Pulses by : Andrea Gamucci
Download or read book Experimental Study of Stable Propagation and Efficient Electron Acceleration in Plasmas with Ultra-short Laser Pulses written by Andrea Gamucci and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Research on Plasma Acceleration by Electric Field Gradient by : RCA LABS PRINCETON N J.
Download or read book Research on Plasma Acceleration by Electric Field Gradient written by RCA LABS PRINCETON N J. and published by . This book was released on 1960 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Theoretical studies of plasma acceleration by an rf field gradient indicated that a plasma will be accelerated toward the low-field region if the applied frequency is greater than the critical frequency of the plasma, and toward the high-field region if the frequency is less than the critical frequency. Calculations for the acceleration of plasma spheres and ellipsoids of arbitrary orientation with respect to the rf field have been completed. Experiments with plasmas of various densities have demonstrated both the acceleration and deceleration of the plasmas as predicted by theory. Mercury plasma has been accelerated with a 140-Mc rf field gradient to a velocity of 25 x 100,000 cm/sec, equivalent to a specific impulse of 2500 seconds. (Author).
Book Synopsis Introduction to Plasma Physics by : R.J Goldston
Download or read book Introduction to Plasma Physics written by R.J Goldston and published by CRC Press. This book was released on 2020-07-14 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to Plasma Physics is the standard text for an introductory lecture course on plasma physics. The text’s six sections lead readers systematically and comprehensively through the fundamentals of modern plasma physics. Sections on single-particle motion, plasmas as fluids, and collisional processes in plasmas lay the groundwork for a thorough understanding of the subject. The authors take care to place the material in its historical context for a rich understanding of the ideas presented. They also emphasize the importance of medical imaging in radiotherapy, providing a logical link to more advanced works in the area. The text includes problems, tables, and illustrations as well as a thorough index and a complete list of references.
Book Synopsis Study of Properties of Accelerated Plasma by : C. L. Dailey
Download or read book Study of Properties of Accelerated Plasma written by C. L. Dailey and published by . This book was released on 1968 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental investigation of the physical properties of the plasma produced in the discharge of an inductive, impulsive, plasma accelerator has been conducted. The objectives of the work were to continually improve the performance of the accelerator as well as to understand the plasma processes and the acceleration mechanism within the current layer. By decreasing the parasitic inductance of the accelerator and the resistance of the spark gap during its ignition transient, it has been possible to develop a diamagnetic, snow-plow discharge in argon at 1-torr pressure on the first half-cycle without using preionization. From the interpretation of probe data, it is found that the current layer is composite having a region of electron current at the front followed by ion current deeper within the layer. The electron current ionizes the gas and supports the steep portion of the moving magnetic field front. (Author).
Book Synopsis Nonthermally Dominated Electron Acceleration During Magnetic Reconnection in a Low-[beta] Plasma by :
Download or read book Nonthermally Dominated Electron Acceleration During Magnetic Reconnection in a Low-[beta] Plasma written by and published by . This book was released on 2015 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: By means of fully kinetic simulations, we investigate electron acceleration during magnetic reconnection in a nonrelativistic proton-electron plasma with conditions similar to solar corona and flares. We demonstrate that reconnection leads to a nonthermally dominated electron acceleration with a power-law energy distribution in the nonrelativistic low-[beta] regime but not in the high-[beta] regime, where [beta] is the ratio of the plasma thermal pressure and the magnetic pressure. The accelerated electrons contain most of the dissipated magnetic energy in the low-[beta] regime. A guiding-center current description is used to reveal the role of electron drift motions during the bulk nonthermal energization. We find that the main acceleration mechanism is a Fermi-type acceleration accomplished by the particle curvature drift motion along the electric field induced by the reconnection outflows. Although the acceleration mechanism is similar for different plasma [beta], low-[beta] reconnection drives fast acceleration on Alfvénic timescales and develops power laws out of thermal distribution. Thus, the nonthermally dominated acceleration resulting from magnetic reconnection in low-[beta] plasma may have strong implications for the highly efficient electron acceleration in solar flares and other astrophysical systems.
Book Synopsis Charged Particle Acceleration in Nonuniform Plasmas by :
Download or read book Charged Particle Acceleration in Nonuniform Plasmas written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The high-gradient electron acceleration schemes that have been demonstrated using LWFA appear promising for the development of plasma-based laser accelerators into practical devices. However, a question still exists: how to avoid the wake field deterioration and the loss of the phase synchronism between the plasma wave and the electrons that prevent them from being accelerated up to the theoretical limit. In order to obtain the highest possible values of the wake electric field one must use as intense laser pulses as possible i.e., pulses with dimensionless amplitudes a[much-gt] 1. Pulses that have a dimensionless amplitude larger than one tend to be subject to a host of instabilities, such as relativistic self-focusing, self modulation and stimulated Raman scattering, that affect their propagation in the plasma. Such processes could be beneficial, in so far as they increase the pulse energy density, enhance the wake field generation, and provide the mechanism for transporting the laser radiation over several Rayleigh lengths without diffraction spreading. However, it is still far from certain that these processes can be exploited in a controlled form and can lead to regular, stationary wake fields. It is known that, in order to create good quality wake fields, it would be preferable to use laser pulses with steep fronts of order[lambda][sub p]. The present paper aims at analyzing the influence of the laser pulse shape and of the plasma nonuniformity on the charged particle acceleration. This study is based on the results obtained with one dimensional PIC simulations.
Book Synopsis Electron Acceleration in Plasma Wave Excited by Resonance Probe by : Johsin Uramoto
Download or read book Electron Acceleration in Plasma Wave Excited by Resonance Probe written by Johsin Uramoto and published by . This book was released on 1965 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Plasma Acceleration by Area Expansion by :
Download or read book Plasma Acceleration by Area Expansion written by and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: As the area of a plasma increases, the plasma can accelerate smoothly from subsonic to supersonic velocity. The singularity which ordinarily occurs at the sonic velocity is resolved not by charge separation, as is the case for a sheath; but rather by a zero in the numerator at the same spatial position as the zero in the denominator, the sonic point. That is, at the sonic point, the acceleration due to expansion just cancels out the deceleration due to ion and electron neutral collisions. It turns out that in this configuration, the plasma can accelerate to about three times the ion sound speed. The electron temperature is determined by the geometry, gas species, and mostly, by the gas pressure. Applications to the production of a stream of neutrals for etching, and to space plasma propulsion are discussed.
Book Synopsis On the Dynamics of Space Plasma by :
Download or read book On the Dynamics of Space Plasma written by and published by . This book was released on 1992 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: The research was focused into three related areas. These were: A) An examination of stochastic electron acceleration mechanisms in the ionosphere and the resulting dynamics of magnetospheric (i.e., Radiation Belt) particles and waves; B) A study of nonadiabatic particle orbits and the electrodynamic structure of the coupled magnetosphere-ionosphere auroral arc system; C) An experimental investigation of the wake signatures created by a solid body immersed in a flowing plasma.
Book Synopsis Particle Physics Reference Library by : Stephen Myers
Download or read book Particle Physics Reference Library written by Stephen Myers and published by Springer Nature. This book was released on 2020-01-01 with total page 867 pages. Available in PDF, EPUB and Kindle. Book excerpt: This third open access volume of the handbook series deals with accelerator physics, design, technology and operations, as well as with beam optics, dynamics and diagnostics. A joint CERN-Springer initiative, the "Particle Physics Reference Library" provides revised and updated contributions based on previously published material in the well-known Landolt-Boernstein series on particle physics, accelerators and detectors (volumes 21A,B1,B2,C), which took stock of the field approximately one decade ago. Central to this new initiative is publication under full open access.
Book Synopsis Experimental Studies of Plasma Wake-field Acceleration and Focusing by :
Download or read book Experimental Studies of Plasma Wake-field Acceleration and Focusing written by and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: More than four years after the initial proposal of the Plasma Wake-field Accelerator (PWFA), it continues to be the object of much investigation, due to the promise of the ultra-high accelerating gradients that can exist in relativistic plasma waves driven in the wake of charged particle beams. These large amplitude plasma wake-fields are of interest in the laboratory, both for the wealth of basic nonlinear plasma wave phenomena which can be studied, as well as for the applications of acceleration of focusing of electrons and positrons in future linear colliders. Plasma wake-field waves are also of importance in nature, due to their possible role in direct cosmic ray acceleration. The purpose of the present work is to review the recent experimental advances made in PWFA research at Argonne National Laboratory, in which many interesting beam and plasma phenomena have been observed. Emphasis is given to discussion of the nonlinear aspects of the PWFA beam-plasma interaction. 29 refs., 13 figs.
Book Synopsis Laser-Plasma Interactions by : Dino A. Jaroszynski
Download or read book Laser-Plasma Interactions written by Dino A. Jaroszynski and published by CRC Press. This book was released on 2009-03-27 with total page 454 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Solid Compendium of Advanced Diagnostic and Simulation ToolsExploring the most exciting and topical areas in this field, Laser-Plasma Interactions focuses on the interaction of intense laser radiation with plasma. After discussing the basic theory of the interaction of intense electromagnetic radiation fields with matter, the book covers three ap
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