Low-frequency sheath instability in a non-Maxwellian plasma with energetic ions.
Spontaneous low-frequency oscillations have been observed in the circuit of a positively biased electrode when the ambient nonuniform plasma is irradiated by a microwave pulse of short duration, which is approximately equal to the ion-plasma period. The instability with its characteristic frequency below the ion-plasma frequency is driven by an accelerated ion component interacting with the sheath of the electrode. A qualitative model of the instability is suggested.
Energy and Environmental Science, Graduate School of Engineering, Utsunomiya University, 7-1-2 Yoto, Utsunomiya, Tochigi 321-8585, Japan. mstar@appl.sci-nnov.ru
Mikhail
M
Starodubtsev
Md
M
Kamal-Al-Hassan
Hiroaki
H
Ito
Noboru
N
Yugami
Yasushi
Y
Nishida