Upstream Ionization Instability Associated with a Current-Free Double Layer
A low frequency instability has been observed using various electrostatic probes in a low-pressure expanding helicon plasma. The instability is associated with the presence of a current-free double layer (DL). The frequency of the instability increases linearly with the potential drop of the DL, and simultaneous measurements show their coexistence. A theory for an upstream ionization instability has been developed, which shows that electrons accelerated through the DL increase the ionization...[Show more]
|Collections||ANU Research Publications|
|Source:||Physical Review Letters|
|01_Aanesland_Upstream_Ionization_2006.pdf||189.85 kB||Adobe PDF||Request a copy|
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