Numerical simulations of axisymmetric erosion processes in ion-focused regime-transported beams

Journal Article · Sun Oct 01 00:00:00 EDT 1989 · Physics of Fluids B: Plasma Physics; (USA)

DOI:https://doi.org/10.1063/1.859074· OSTI ID:5647576

Krall, J; Nguyen, K; Joyce, G ^[1]

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1. Plasma Physics Division, Naval Research Laboratory, Washington, D.C. 20375-5000 (US)

Erosion rates for a relativistic electron beam propagating through a low-density plasma channel in the ion-focused regime are computed via axisymmetric particle simulation. Steady-state inductive (Ohmic) erosion rates are found that are in quantitative agreement with new theoretical results, which correctly account for the relativistic dynamics of electrons at the beam head. In cases where the finite emittance of the beam is expected to be the dominant loss mechanism, the beam does not develop steady-state erosion, as suggested by previous analyses. Asymptotically, such a beam is characterized by a low-emittance population at the beam head, a long rise length, and an erosion rate that tends toward zero.

• OSTI ID: 5647576
• Journal Information: Physics of Fluids B: Plasma Physics; (USA), Vol. 1:10; ISSN 0899-8221
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
BEAM-PLASMA SYSTEMS
PINCH EFFECT
PLASMA
ELECTRON BEAM INJECTION
ACCURACY
ASYMPTOTIC SOLUTIONS
BEAM EMITTANCE
CORRELATIONS
ENERGY LOSSES
EROSION
INDUCTION
ION BEAMS
NUMERICAL SOLUTION
SIMULATION
STEADY-STATE CONDITIONS
SYMMETRY
BEAM INJECTION
BEAMS
LOSSES
430200* - Particle Accelerators- Beam Dynamics
Field Calculations
& Ion Optics