[PDF] Interactions Of Relativistic Electron Beams With High Atomic Number Plasmas eBook

Author : David Mosher
Publisher :
Page : 49 pages
File Size : 25,76 MB
Release : 1974
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ISBN :

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A relativistically-correct Fokker-Planck analysis is used to develop fluid equations which model the interaction of relativistic electron beams with high atomic-number plasmas. The derived collision terms can be used to describe scattering and energy in materials ranging from the solid to high-temperature plasma forms. The full set of equations discussed can be used to study electron-beam-initiated pellet-fusion in a completely self-consistent fashion. Specifically, the model is applicable to study of beam pinching in plasma-filled diodes, the interaction of focussed beams with target plasmas, and the transport of high nu/gamma beams in high atomic-number plasmas. Although the general equations are amenable to solution only by computational techniques, analytic solutions describing the time-dependent, collisional interaction of a beam in an infinite plasma, and the one-dimensional equilibrium of a beam in a plasma with applied electric field have been obtained.

Author :
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Page : pages
File Size : 35,72 MB
Release : 1975
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A set of relativistic multigroup diffusion equations was derived for the study of electron beam--target interactions. Included are transport, Coulomb collisions, electric and magnetic fields, bremsstrahlung, and hydrodynamic motion of the background plasma. LASNEX, the Laser-Fusion code, is being modified to include these equations and will be used for modeling electron beam fusion. (auth).

Author : Oliver James Pike
Publisher : Springer
Page : 154 pages
File Size : 40,20 MB
Release : 2017-08-17
Category : Science
ISBN : 331963447X

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This thesis makes two important contributions to plasma physics. The first is the extension of the seminal theoretical works of Spitzer and Braginskii, which describe the basics of particle interactions in plasma, to relativistic systems. Relativistic plasmas have long been studied in high-energy astrophysics and are becoming increasingly attainable in the laboratory. The second is the design of a new class of photon–photon collider, which is the first capable of detecting the Breit–Wheeler process. Though it offers the simplest way for light to be converted into matter, the process has never been detected in the 80 years since its theoretical prediction. The experimental scheme proposed here exploits the radiation used in inertial confinement fusion experiments and could in principle be implemented in one of several current-generation facilities.

Author : National Research Council
Publisher : National Academies Press
Page : 177 pages
File Size : 23,53 MB
Release : 2003-05-11
Category : Science
ISBN : 030908637X

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Recent scientific and technical advances have made it possible to create matter in the laboratory under conditions relevant to astrophysical systems such as supernovae and black holes. These advances will also benefit inertial confinement fusion research and the nation's nuclear weapon's program. The report describes the major research facilities on which such high energy density conditions can be achieved and lists a number of key scientific questions about high energy density physics that can be addressed by this research. Several recommendations are presented that would facilitate the development of a comprehensive strategy for realizing these research opportunities.

Author : Valery B. Krasovitskii
Publisher : Nova Publishers
Page : 234 pages
File Size : 29,89 MB
Release : 2008
Category : Science
ISBN : 9781600215155

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This book is devoted to the non-linear theory of the collective interaction between a modulated beam of relativistic charged particles and narrow electromagnetic and Langmuir wave packets in plasma or gas slow-wave systems. Regular oscillations excited by a relativistic beam under the conditions of Cherenkov resonance and the anomalous Doppler effect can be used to generate coherent microwave radiation and accelerate charged particles in plasma.

Author : D. Mosher
Publisher :
Page : 35 pages
File Size : 11,45 MB
Release : 1976
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A diffusion theory for the collisional interaction of relativistic electron beams with high-atomic-number plasmas is used to develop analytical expressions for the beam-momentum distribution function in a slab target or plasma for the case of a normally incident, well-collimated, monoenergetic beam with any radial profile. Moments of the distribution function are calculated for a Gaussian incident profile of arbitrary width. Using these, contour plots of energy deposition and current flow are determined. Bremsstrahlung intensity profiles corresponding to pinhole photographs of tightly pinched beams are presented for various ratios of incident beam width to electron range. Theoretical deposition profiles, current transmission, and energy coupling of beam to target are compared with the results of Monte Carlo calculations.