Diocotron instability of an intense relativistic electron beam in an accelerator.

Kinetic Stability Properties of an Intense Relativistic Electron Ring in a High-current Betatron Accelerator

شبیه‌سازی ذره‌ای شتاب دادن الکترون‌ها در پلاسمای کم چگال

One of the interesting Laser-Plasma phenomena, when the laser power is high and ultra intense, is the generation of large amplitude plasma waves (Wakefield) and electron acceleration. An intense electromagnetic laser pulse can create plasma oscillations through the action of the nonlinear pondermotive force. electrons trapped in the wake can be accelerated to high energies, more than 1 TW. Of t...

Stimulated Raman Scattering by an Intense Relativistic Electron Beam Subjected to a Rippled Electric Field

Generation of submillimeter radiation by stimulated Raman scattering in an intense relativistic electron beam subjected to a spatially periodic transverse electric field is examined. The requisite electric field modulation can be obtained by rippling the wall of the conducting drift tube. When the electron beam is subjected to a periodic longitudinal electric field, short wavelength plasmons, r...

Shielding simulations for safe use of curtain electron accelerator by MCNP4C

In an electron curtain accelerator, when the electron beam passes through the titanium exit window of the accelerator chamber, X-ray photons are produced as a negative by-product of retarding accelerated electrons. Controlling the produced X-ray photons to avoid their detrimental effects or in fact, proper shielding of the accelerator is an important issue that has to be considered in the use o...

Relativistic stabilisation of the diocotron instability in a pulsar “cylindrical” electrosphere

Context. The physics of the pulsar inner magnetosphere remains poorly constrained by observations. Although about 2000 pulsars have been discovered to date, only little is known about their emission mechanism. Large vacuum gaps exist in the magnetosphere and a non-neutral plasma fills partially the neutron star surroundings to form an electrosphere. Aims. In a previous work, we showed that the ...