Filament relativistic electron beam
WebSelf-focusing is a non-linear optical process induced by the change in refractive index of materials exposed to intense electromagnetic radiation. A medium whose refractive index increases with the electric field intensity acts as a focusing lens for an electromagnetic wave characterized by an initial transverse intensity gradient, as in a laser beam. The peak … WebMay 17, 2024 · The electron beam couples with a laser-generated seed plasma in dependence of spatiotemporal overlap, which triggers additional plasma production and manifests as enhanced plasma afterglow. This optical observable is exploited to measure beam concurrence with ∼ 4 μ m spatial and ∼ 26.7 fs temporal accuracy, supported by …
Filament relativistic electron beam
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WebJun 18, 2024 · The free electron density in the target plane is found to filament femtoseconds after irradiation as shown in Fig. 1c, and plots of the magnetic field component into and out of the target in Fig ... WebDec 1, 2024 · Filament mergers, which take place after the exponential growth phase of the instability has ended, lead to an expansion of the beam electron filaments, which amplifies the magnetic field they generate and induces an electric field in this filament. Beam electrons lose a substantial fraction of their kinetic energy to the electric field.
WebAbstract. A study is made of the equilibrium state of a neutralized relativistic electron beam described by a distribution function which has an exponential energy dependence, an exponential dependence on the longitudinal component of the generalized momentum, and a power-law dependence on the angular momentum of the particle with respect to the … WebJan 14, 2024 · Multi-layer structures in beam phase space are clearly observed. The two-stream instability (TSI) with short electron beam is limited in the present simulations. The current filamentation instability (CFI) breaks up the relativistic electron beam into small filaments and causes large energy deposition in the plasma.
WebMay 8, 2024 · The linear instability that induces a relativistic electron beam passing through a plasma with return current to filament transversely is often related to some filamentation mode with the wave ... WebWe report nonlinear studies of the Weibel instability of a relativistic electron beam in a plasma. If n b ≪ n p, the beam splits into self-pinched filaments at density n p.These filaments then recombine into a single dense beam, from …
WebApr 10, 2024 · The target has a higher resistivity around the electron beam and filaments, since there is higher ionization but a lower target temperature there compared with the region of the target around the laser propagation axis. ... Bret, M.-C. Firpo, and C. Deutsch, “ Characterization of the initial filamentation of a relativistic electron beam ...
WebIt is shown that during the final stage these beam filaments can carry super-Alfvenic currents and form hollow current density profiles similar to the Hammer-Rostoker … mocs processWebRelativistic electron beam. Relativistic electron beams are streams of electrons moving at relativistic speeds. They are the lasing medium in free electron lasers to be used in atmospheric research conducted at entities such as the Pan-oceanic Environmental and Atmospheric Research Laboratory (PEARL) at the University of Hawaii and NASA . mocs mayors officeWebJan 9, 2024 · Relativistic electron beam phase space and transported energy. a , b Relativistic electron beam (REB) transverse phase space ( x , p x ) at the target’s rear … mocsok onlineWebHighly collimated electron bunches with good pointing stability and extremely high beam charge were generated, as shown in Fig. 2A, using the full energy laser pulse with approximately 5 mJ prepulse.These beams were emitted along the laser specular reflection direction with an average divergence angle of 2.7 (47 mrad) FWHM. This is much … moc sofaWebThe EG provides a stable source of electrons, which is used to form the electron beam. A schematic of a self-biased EG is shown in Figure 1(b).The electron source is a filament … in love with the world mingyur rinpocheWebJan 14, 2024 · Multi-layer structures in beam phase space are clearly observed. The two-stream instability (TSI) with short electron beam is limited in the present simulations. … mocs ptWebThe long-distance stable transport of relativistic electron beams (REBs) in plasmas is studied by full three-dimensional particle-in-cell simulations. ... Compared with the beam with smaller radius, the beam head splits into filaments and the middle part of the beam becomes slightly twisted. As the beam transports further, the SMI increases ... mocsow non profit round table