Simulations of the dust acoustic instability in a collisional plasma with warm dust

Quest, K. B.; Rosenberg, M.; Kercher, B.; Dutreix, M.

doi:10.1017/s0022377816000994

Cited by 2 publications

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“…Quest et al. 2016) (see also Nishikawa & Wu 1969; Albright 1974). This can be written as Estimating in the linear phase from figure 4( c ), we roughly estimate , taking .…”

Section: Simulation Resultsmentioning

confidence: 95%

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Simulations of the ion–dust streaming instability with non-Maxwellian ions

2017

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The dust acoustic, or dust density, wave is a very low frequency collective mode in a dusty plasma that is associated with the motion of the charged and massive dust grains. An ion flow due to an electric field can excite these waves via an ion–dust streaming instability. Theories of this instability have often assumed a shifted-Maxwellian ion velocity distribution. Recently, the linear kinetic theory of this instability was considered using a non-Maxwellian ion velocity distribution (Kählert, Phys. Plasmas, vol. 22, 2015, 073703). In this paper, we present one-dimensional PIC simulations of the nonlinear development of the ion–dust streaming instability, comparing the results for these two types of ion velocity distributions, for several values of the ion drift speed and collision rate. Parameters are considered that reflect the ordering of plasma and dust quantities in laboratory dusty plasma experiments. It is found that, in general, the wave energy density is smaller in the simulations with a non-Maxwellian ion distribution.

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“…Quest et al. 2016) (see also Nishikawa & Wu 1969; Albright 1974). This can be written as Estimating in the linear phase from figure 4( c ), we roughly estimate , taking .…”

Section: Simulation Resultsmentioning

confidence: 95%

“…Quest et al. 2016). Because the linear growth rate of ion-dust streaming instability depends on quantities such as the ion drift speed and collision rate, we consider several values of the ion thermal Mach number and both a lower and higher ion collision rate.…”

Section: Introductionmentioning

confidence: 99%