Dust particle pair correlation functions and the non-linear effect of interaction potentials

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dc.contributor.authorKong, Jie
dc.contributor.authorQiao, Ke
dc.contributor.authorMatthews, Lorin Swint.
dc.contributor.authorHyde, Truell Wayne.
dc.date.accessioned2019-07-17T18:02:42Z
dc.date.available2019-07-17T18:02:42Z
dc.date.issued2019-07
dc.description.abstractDust kinetic temperature is a measure of the energy of the stochastic motion of a dust particle and is a result of the combination of the Brownian motion and the fluctuations in the dust charge and confining electric field. A method using the equilibrium value of the mean square displacement was recently introduced to obtain the dust kinetic temperature experimentally. As a follow up, this paper investigates the relationship between the dust kinetic energy derived from the mean square displacement technique and a technique using the probability distribution of the displacements obtained from random fluctuations of the dust particle. The experimental results indicate that the harmonic confinement potential acting on the dust particle can be obtained by combining the two methods, allowing the nonlinear effect of the confining force to be investigated. The thermal expansion in a 1-D vertical chain is discussed as a representative application as it is related to the nonlinear confinement force, or the asymmetric confinement potential.en_US
dc.description.keywordsdusty plasmaen_US
dc.description.keywordsnonlinear interactionen_US
dc.description.keywordsion wakeen_US
dc.identifier.citationIEEE Transactions on Plasma Science, 47(7), 3057-3062, July 2019en_US
dc.identifier.doi10.1109/TPS.2019.2906583
dc.identifier.urihttps://hdl.handle.net/2104/10644
dc.language.isoenen
dc.publisherIEEE Transactions on Plasma Scienceen_US
dc.titleDust particle pair correlation functions and the non-linear effect of interaction potentialsen_US
dc.typeArticleen

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