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Laboratory evidence for stochastic plasma-wave growth

Austin, D.R; Hole, Matthew; Robinson, Peter A; Cairns, Iver Hugh; Dallaqua, R.S


The first laboratory confirmation of stochastic growth theory is reported. Floating potential fluctuations are measured in a vacuum arc centrifuge using a Langmuir probe. Statistical analysis of the energy density reveals a lognormal distribution over roughly 2 orders of magnitude, with a high-field nonlinear cutoff whose spatial dependence is consistent with the predicted eigenmode profile. These results are consistent with stochastic growth and nonlinear saturation of a spatially extended...[Show more]

CollectionsANU Research Publications
Date published: 2007-11-14
Type: Journal article
Source: Physical Review Letters
DOI: 10.1103/PhysRevLett.99.205004


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