Supra-bubble Regime for Laser Acceleration of Coldelectron Beams in Tenuous Plasma - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Supra-bubble Regime for Laser Acceleration of Coldelectron Beams in Tenuous Plasma write by . This book was released on 2009. Supra-bubble Regime for Laser Acceleration of Coldelectron Beams in Tenuous Plasma available in PDF, EPUB and Kindle. Relativistic electrons can be accelerated by an ultraintense laser pulse in the "supra-bubble" regime, that is, in the blow-out regime ahead of the plasma bubble (as opposed to the conventional method, when particles remain inside the bubble). The acceleration is caused by the ponderomotive force of the pulse, via the so-called snow-plow mechanism. The maximum energy gain, [Delta][gamma] ~ [gamma]g a, is attained when the particle Lorentz factor [gamma] is initially about [gamma]g/a, where [gamma]g is the pulse group speed Lorentz factor, and a is the laser parameter, proportional to the laser field amplitude. The scheme operates at a ≤ [gamma]g, yielding [Delta][gamma] of up to that via wakefield acceleration for the same plasma and laser parameters, [Delta][gamma] ~ [gamma]2g. The interaction length is shorter than that for the wake field mechanism but grows with the particle energy, hindering acceleration in multiple stages.
Space Plasma Simulation
Space Plasma Simulation - read free eBook in online reader or directly download on the web page. Select files or add your book in reader. Download and read online ebook Space Plasma Simulation write by Jörg Büchner. This book was released on 2003-04-09. Space Plasma Simulation available in PDF, EPUB and Kindle. The aim of this book is twofold: to provide an introduction for newcomers to state of the art computer simulation techniques in space plasma physics and an overview of current developments. Computer simulation has reached a stage where it can be a highly useful tool for guiding theory and for making predictions of space plasma phenomena, ranging from microscopic to global scales. The various articles are arranged, as much as possible, according to the - derlying simulation technique, starting with the technique that makes the least number of assumptions: a fully kinetic approach which solves the coupled set of Maxwell’s equations for the electromagnetic ?eld and the equations of motion for a very large number of charged particles (electrons and ions) in this ?eld. Clearly, this is also the computationally most demanding model. Therefore, even with present day high performance computers, it is the most restrictive in terms of the space and time domain and the range of particle parameters that can be covered by the simulation experiments. It still makes sense, therefore, to also use models, which due to their simp- fying assumptions, seem less realistic, although the e?ect of these assumptions on the outcome of the simulation experiments needs to be carefully assessed.
