Parametric instabilities during electron cyclotron resonance heating in plasmas

Sharma, R. P.; Tripathi, Y. K.; Kumar, Asheel

doi:10.1103/physreva.35.3567

Cited by 2 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Both modes are undamped on the resolved timescales. One may interpret the parametric interaction as a three-wave coupling between the waves corresponding to the peaks 1-3 in figure 8(b), resembling the system of Sharma et al [25]. However, here the B y (x, t) varies spatially and the parametric interaction may involve more of the waves of the spectrum in figure 8(b).…”

Section: Simulation 2: Box Length Lmentioning

confidence: 84%

See 1 more Smart Citation

Electric field generation by the electron beam filamentation instability: filament size effects

Dieckmann¹,

Bret²

2009

Phys. Scr.

View full text Add to dashboard Cite

Abstract. The filamentation instability (FI) of counter-propagating beams of electrons is modelled with a particle-in-cell simulation in one spatial dimension and with a high statistical plasma representation. The simulation direction is orthogonal to the beam velocity vector. Both electron beams have initially equal densities, temperatures and moduli of their nonrelativistic mean velocities. The FI is electromagnetic in this case. A previous study of a small filament demonstrated, that the magnetic pressure gradient force (MPGF) results in a nonlinearly driven electrostatic field. The probably small contribution of the thermal pressure gradient to the force balance implied, that the electrostatic field performed undamped oscillations around a background electric field. Here we consider larger filaments, which reach a stronger electrostatic potential when they saturate. The electron heating is enhanced and electrostatic electron phase space holes form. The competition of several smaller filaments, which grow simultaneously with the large filament, also perturbs the balance between the electrostatic and magnetic fields. The oscillations are damped but the final electric field amplitude is still determined by the MPGF.

show abstract

Section: Simulation 2: Box Length Lmentioning

confidence: 84%

“…8(b), resembling the system of Ref. [25]. However, here the B y (x, t) varies spatially and the parametric interaction may involve more of the waves of the spectrum in Fig.…”

Section: Simulation 2: Box Lengthmentioning

confidence: 87%