Observation of self-excited dust acoustic wave in dusty plasma with nanometer size dust grains

Deka, T.; Boruah, A.; Sharma, S. K.; Bailung, Heremba

doi:10.1063/1.5001721

Cited by 19 publications

(16 citation statements)

References 40 publications

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“…Our results have inspired other researchers in wider fields beyond plasma physics [64][65][66][67][68][69][70][71][72][73][74][75][76]. The followings are examples.…”

Section: Summary and Subsequent Developmentsupporting

confidence: 68%

Dynamic Behavior of Dust Particles in Plasmas

Saitou¹,

Ishihara²

2020

Progress in Fine Particle Plasmas

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Experimentally observed dynamic behavior, such as a particle circulation under magnetic field, a bow shock formation in an upper stream of an obstacle, etc., will be reviewed. Dust particles confined in a cylindrical glass tube show a dynamic circulation when strong magnetic field is applied from the bottom of the tube using a permanent magnet. The circulation consists of two kinds of motions: one is a toroidal rotation around the tube axis, and the other is a poloidal rotation. Dust particles are blown upward from near the bottom of the tube against the gravity neighborhood of the tube axis. A two-dimensional supersonic flow of dust particles forms a bow shock in front of a needlelike-shaped obstacle when the flow crosses the obstacle. The slower flow passes the obstacle as a laminar flow. A streamlineshaped void where dust particles are not observed is formed around the obstacle.

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“…Our results have inspired other researchers in wider fields beyond plasma physics [64][65][66][67][68][69][70][71][72][73][74][75][76]. The followings are examples.…”

Section: Summary and Subsequent Developmentsupporting

confidence: 68%

Dynamic Behavior of Dust Particles in Plasmas

Saitou¹,

Ishihara²

2020

Progress in Fine Particle Plasmas

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“…Although the dusty plasma considered in this work suffered from electron depletion, the effect was not as severe as in the work of, e.g. Tadsen et al [42] and Deka et al [44].…”

Section: Discussionmentioning

confidence: 61%

In-situ measurement of dust charge density in nanodusty plasma

Staps

Donders

Platier

et al. 2021

J. Phys. D: Appl. Phys.

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A dust grain immersed in a low-pressure gas discharge obtains a permanent negative surface charge due to the high mobility of electrons compared to that of ions. This charge essentially governs all fundamental processes in dusty and complex plasmas involving dust grains, neutrals, (an)ions and electrons and—consequently—virtually all industrial applications of these types of plasmas are affected and steered by it. In this work, we have measured the surface charge by application of laser-induced electron detachment from nanosized dust grains in concert with microwave cavity resonance spectroscopy and laser light extinction. The main result is that the electron release is governed by photodetachment rather than by thermionic emission, and that recharging of the dust grains occurs on timescales that are well in agreement with the orbital-motion-limited (OML) theory. The total surface charge density residing on the dust grains inside the laser volume follows from the saturation of the photodetachment signal, which was used in combination with dust density values derived from extinction measurements to estimate the mean dust charge. The negative dust charge on the 140 nm (average) diameter dust grains in this work is obtained to be in the range of 273 – 2519 elementary charges, of which the lower bound matches well with analytical predictions using the OML theory.

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“…However, we cannot exclude the possibility that in the closed loop sheath flow system of the UDMA-1 small amounts of water vapour remain. The calibration of the ioniAPi-TOF mass axis was performed using a bipolar electrospray source for the generation of tetraheptyl ammonium bromide clusters (Fernández de la Mora and Barrios-Collado, 2017;Brilke et al, 2020). The UDMA-1 resolution power is 15 at the size of the THABr monomer, i.e.…”

Section: Methodsmentioning

confidence: 99%

Characterization of a non-thermal plasma source for use as a mass specrometric calibration tool and non-radioactive aerosol charger

Tauber

Schmoll

Gruenwald³

et al. 2020

Atmos. Meas. Tech.

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Abstract. In this study the charging efficiency of a radioactive and a non-radioactive plasma bipolar diffusion charger (Gilbert Mark I plasma charger) for sub-12 nm particles has been investigated at various aerosol flow rates. The results were compared to classic theoretical approaches. In addition, the chemical composition and electrical mobilities of the charger ions have been examined using an atmospheric pressure interface time-of-flight mass spectrometer (APi-TOF MS). A comparison of the different neutralization methods revealed an increased charging efficiency for negatively charged particles using the non-radioactive plasma charger with nitrogen as the working gas compared to a radioactive americium bipolar diffusion charger. The mobility and mass spectrometric measurements show that the generated bipolar diffusion charger ions are of the same mobilities and composition independent of the examined bipolar diffusion charger. It was the first time that the Gilbert Mark I plasma charger was characterized in comparison to a commercial TSI X-Ray (TSI Inc, Model 3088) and a radioactive americium bipolar diffusion charger. We observed that the plasma charger with nitrogen as the working gas can enhance the charging probability for sub-10 nm particles compared to a radioactive americium bipolar diffusion charger. As a result, the widely used classical charging theory disagrees for the plasma charger and for the radioactive chargers with increased aerosol flow rates. Consequently, in-depth measurements of the charging distribution are necessary for accurate measurements with differential or scanning particle sizers for laboratory and field applications.

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Observation of self-excited dust acoustic wave in dusty plasma with nanometer size dust grains

Cited by 19 publications

References 40 publications

Dynamic Behavior of Dust Particles in Plasmas

Dynamic Behavior of Dust Particles in Plasmas

In-situ measurement of dust charge density in nanodusty plasma

Characterization of a non-thermal plasma source for use as a mass specrometric calibration tool and non-radioactive aerosol charger

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