Ion hose instability
WebThis instability is a direct result of beam-electron ionization of residual background gas, and the growth rate is proportional to the ion density. In a typical accelerator vacuum, there is … WebAn electron beam focused by an ion channel without a magnetic field, in the so-called ion focus regime (IFR), may be disrupted by the transverse ion hose instability. We …
Ion hose instability
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WebA formulation of the equation for the relativistic electron beam centroid dynamics in the case of a ion hose instability for the situation of the beam propagating in the ion plasma channel in gas — plasma rarefied background (ion focused regime) is derived. It is assumed that this instability are investigated in the linear stage only.
Web19 mrt. 2003 · The ion-hose instability is a transverse electrostatic instability which occurs on electron beams in the presence of a low-density ion channel. It is a … Web1 apr. 1997 · A relativistic electron beam magnetically self-focused in a plasma is subject to an electrostatic hose instability. A linear theory of hose growth is formulated taking into account nonlinear...
WebThe ion hose instability in the ion‐focused regime is analyzed using a rigid beam model with phenomenological damping terms. Values of the instability wavelength, e‐folding … Web1 jun. 1993 · The growth rate of the ion-hose instability has been measured for a 2.5 MeV, 1 kA, 1 {mu}sec electron beam following plasma channels of O{sub 2}, N{sub 2}, and …
WebThe ion hose instability, which can seriously disrupt an IREB propagating in a focusing ion channel, is studied for the charge neutral Bennett-pinched beam. A rigid beam approximation predicts that the instability occurs in the long wavelength region, has a strong resonant growth, and has features of an absolute instability.
WebThe growth and saturation of the ion-hose instability in an applied axial magnetic field is examined. This dipole streaming instability is an important factor in determining the time … how many hindus are in indiaWeb1 jun. 1993 · The hose instability, which is seeded by initial transverse beam and/or plasma phase space asymmetries, is growing rapidly due to the extreme transverse fields, which can be on the same order... how many hindus in india todayWebThe ion- hose instability is a transverse electrostatic instability which occurs as a result of the interaction between the beam and the ion channel transverse motions. how many hindus in the united statesWebA relativistic electron beam, propagating in an underdense ion‐focusing channel that is embedded within a broad region of underdense plasma, is shown to be subject to a hose instability due to coupling with plasma electrons at the edge of the pure‐ion region. The instability is studied by means of linearized analytic calculations of dispersion relations … how many hindus in congressWeb16 mei 2024 · instability know as the electron hose instability. The linear theory of electron-hose instability in a uniform ion column predicts that for the parameters of the E157 experiment (beam charge, bunch length, and plasma density) a growth of the centroid offset should occur. Analysis of the E157 data has provided four critical results. The how many hindus in the usaWeb4 apr. 2024 · 2. Source term S = − ( ρ − J z, p) (black lines) as assumed in the model and resulting focusing field (blue lines) in a plasma column (solid lines) and a homogeneous plasma (dashed lines). In a plasma column with a radius Rp smaller than the blowout radius Rb, the focusing field is reduced at the blowout radius. PPT. how many hindus out of nrc in assamWeb2 aug. 2000 · The ion-hose (or fast-ion) instability sets limits on the allowable vacuum in a long-pulse, high current accelerator. Beam-induced ionization of the background … how a clock works animation