TY - GEN
T1 - Electron kinetic effects and beam-related instabilities in hall discharges
T2 - 35th European Physical Society Conference on Plasma Physics, EPS 2008 Combined with the 10th International Workshop on Fast Ignition of Fusion Targets
AU - Sydorenko, D.
AU - Smolyakov, A.
AU - Kaganovich, I.
AU - Raitses, Y.
PY - 2008
Y1 - 2008
N2 - Recent analytical studies and particle-in-cell simulations suggest that the electron velocity distribution function of a Hall thruster plasma is non-Maxwellian and anisotropic, resulting in many new properties of plasma in a Hall thruster. The present paper describes a regime of the discharge in which relaxation oscillations appear in the sheath near the thruster walls. The relaxation oscillations are observed in one-dimensional particle-in-cell simulations under the condition of intense turbulent heating. In this regime, the plasma switches between a state with non-space charge limited emission and a state with space charge limited emission. Transition to the latter state occurs when the negative conductivity appears due to the modification of the velocity distribution of the plasma bulk electrons.
AB - Recent analytical studies and particle-in-cell simulations suggest that the electron velocity distribution function of a Hall thruster plasma is non-Maxwellian and anisotropic, resulting in many new properties of plasma in a Hall thruster. The present paper describes a regime of the discharge in which relaxation oscillations appear in the sheath near the thruster walls. The relaxation oscillations are observed in one-dimensional particle-in-cell simulations under the condition of intense turbulent heating. In this regime, the plasma switches between a state with non-space charge limited emission and a state with space charge limited emission. Transition to the latter state occurs when the negative conductivity appears due to the modification of the velocity distribution of the plasma bulk electrons.
UR - https://www.scopus.com/pages/publications/84873051394
UR - https://www.scopus.com/pages/publications/84873051394#tab=citedBy
M3 - Conference contribution
AN - SCOPUS:84873051394
SN - 9781622763351
T3 - 35th EPS Conference on Plasma Physics 2008, EPS 2008 - Europhysics Conference Abstracts
SP - 2202
EP - 2205
BT - 35th EPS Conference on Plasma Physics 2008, EPS 2008 - Europhysics Conference Abstracts
Y2 - 9 June 2008 through 13 June 2008
ER -