Laboratory evidence for stochastic plasma-wave growth

D. R. Austin; M. J. Hole; P. A. Robinson; Iver H. Cairns; R. Dallaqua

doi:10.1103/PhysRevLett.99.205004

Laboratory evidence for stochastic plasma-wave growth

D. R. Austin^*, M. J. Hole, P. A. Robinson, Iver H. Cairns, R. Dallaqua

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

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 eigenmode, the first evidence for stochastic growth of an extended structure.

Original language	English
Article number	205004
Journal	Physical Review Letters
Volume	99
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevLett.99.205004
Publication status	Published - 14 Nov 2007

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10.1103/PhysRevLett.99.205004

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title = "Laboratory evidence for stochastic plasma-wave growth",

abstract = "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 eigenmode, the first evidence for stochastic growth of an extended structure.",

author = "Austin, {D. R.} and Hole, {M. J.} and Robinson, {P. A.} and Cairns, {Iver H.} and R. Dallaqua",

year = "2007",

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language = "English",

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T1 - Laboratory evidence for stochastic plasma-wave growth

AU - Austin, D. R.

AU - Hole, M. J.

AU - Robinson, P. A.

AU - Cairns, Iver H.

AU - Dallaqua, R.

PY - 2007/11/14

Y1 - 2007/11/14

N2 - 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 eigenmode, the first evidence for stochastic growth of an extended structure.

AB - 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 eigenmode, the first evidence for stochastic growth of an extended structure.

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U2 - 10.1103/PhysRevLett.99.205004

DO - 10.1103/PhysRevLett.99.205004

M3 - Article

SN - 0031-9007

VL - 99

JO - Physical Review Letters

JF - Physical Review Letters

IS - 20

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ER -

Laboratory evidence for stochastic plasma-wave growth

Abstract

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