TY - JOUR

T1 - Reasons for branching of a positive streamer in a non-uniform field

AU - Savel'eva, L.A.

AU - Samusenko, A.V.

AU - Stishkov, Y.K.

PY - 2013

Y1 - 2013

N2 - The stage of streamer branching initiation in a nonuniform electric field (the point-plane electrode system) is analyzed in a drift-diffusion approximation. A chain of cause-and-effect relations is analyzed using a sufficiently simplified model of a semi-ellipsoidal ideally conductive streamer head. It is found that the bluntness of the head may occur even if the maximum of the electric field intensity is located in the center of the head (on the "pole") if the maximum is feebly marked. The electric field distribution on the streamer head depends on both the potential and the form of the head and on the adjacent charged objects, in particular, on the active electrode. The electric field minimum in the area of the electrode-streamer contacts makes the maximum of the field intensity on the head to be sharper and prevents branching. When the streamer head moves away from the active electrode, the maximum of the field intensity gets less sharp. It makes the head blunter; due to this, the maximum of the electric f

AB - The stage of streamer branching initiation in a nonuniform electric field (the point-plane electrode system) is analyzed in a drift-diffusion approximation. A chain of cause-and-effect relations is analyzed using a sufficiently simplified model of a semi-ellipsoidal ideally conductive streamer head. It is found that the bluntness of the head may occur even if the maximum of the electric field intensity is located in the center of the head (on the "pole") if the maximum is feebly marked. The electric field distribution on the streamer head depends on both the potential and the form of the head and on the adjacent charged objects, in particular, on the active electrode. The electric field minimum in the area of the electrode-streamer contacts makes the maximum of the field intensity on the head to be sharper and prevents branching. When the streamer head moves away from the active electrode, the maximum of the field intensity gets less sharp. It makes the head blunter; due to this, the maximum of the electric f

U2 - 10.3103/S1068375513020130

DO - 10.3103/S1068375513020130

M3 - Article

VL - 49

SP - 125

EP - 135

JO - Surface Engineering and Applied Electrochemistry

JF - Surface Engineering and Applied Electrochemistry

SN - 1068-3755

IS - 2

ER -