Mass-Loss Rate for MF Resin Microspheres

Pavlu, Jiri; Velyhan, A.; Richterová, I.; Němeček, Zdenek; Šafránková, Jana; Cermak, I.; Žilavý, P.

doi:10.1109/tps.2004.826120

Cited by 59 publications

(60 citation statements)

References 9 publications

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“…However, the SE yield is not directly measurable quantity in our experiment (see Pavlů et al (2004) for the experiment description) because the measured equilibrium charge is proportional to the grain potential only. This potential is plotted in Fig.…”

Section: Model Resultsmentioning

confidence: 94%

See 1 more Smart Citation

Secondary emission from dust grains with a surface layer: comparison between experimental and model results

Richterová

Pavlu

Němeček

et al. 2006

Advances in Space Research

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Section: Model Resultsmentioning

confidence: 94%

“…A detailed description of this method can be found in Pavlů et al (2004). The results are summarised in Fig.…”

Section: Comparison Of the Model And Experimentsmentioning

confidence: 99%

Secondary emission from dust grains with a surface layer: comparison between experimental and model results

Richterová

Pavlu

Němeček

et al. 2006

Advances in Space Research

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“…The grain oscillation frequency is the only measurable quantity, thus we have developed several techniques to determine the grain size, mass, charge, capacitance, and other parameters. The details of the experiment as well as the description of these techniques could be found in Zilavy et al [10], Pavlu et al [11,12], Nemecek et al [13].…”

Section: Experimental Techniques and Characterization Of Lif Grainsmentioning

confidence: 99%

Auto-ionization of LiF grains

Pavlu¹,

Nouzak²,

Vysinka³

et al. 2018

AIP Conference Proceedings

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Abstract. Low-affinity materials (as MgO, CaO, LiF) are known to vary their Mie scattering profile with a changing charge. These materials are also predisposed to autoionize themselves. Although the oxides, opposite to lithium fluoride, are expected within the space environment, the presented investigations were carried out on LiF, since the aforementioned process shall be more pronounced. We are trapping a single grain in an electrodynamic quadrupole where the dust charge and its evolution can be estimated. By precise observations, we can register isolated hops of the grain charge which indicate the autoionization. A rate of this process varies with previous treatments of the object. While fresh grains exhibit one or a few hops within first 24 hours, the period between hops decreases to seconds, and the grain increases its charge by tens of elementary charges when the grains are treated by the electron beam with energy of 0.5-1 keV. On the other hand, ion treatment seems to stop the autoionization. The paper summarizes our observations and attempts to characterize the process itself.

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“…13 where the surface potential at the maximum of the secondary emission yield is plotted as a function of the mean atomic number of the grain material (MF stands for melamineformaldehyde resin [51]). One can note that this parameter orders the potentials rather well.…”

Section: Spectrum Of Secondary Electronsmentioning

confidence: 99%

Dust Charging in Space‐related Laboratory Experiments: A Review Focused on Secondary Emission

Pavlu

Šafránková

Němeček

et al. 2009

Contrib. Plasma Phys.

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A role of dust in the space environment is of increasing interest in the recent years. Also the fast development of fusion devices with magnetic confinement brought new issues in the plasma-surface interaction. While there is a number of dusty plasma reviews, the present paper surveys experimental results connected with charging of dust grains under well-defined laboratory conditions for both space and industrial applications. The main purpose of these experiments is to study particular charging/discharging processes preferably on spacerelated (i.e., all sorts of glass and other oxides) as well as on elemental materials (carbon, nickel, gold). Single micrometer-sized spherical grains or grain's clusters stored in vacuum are exposed to electron and ion beams. Among several charging processes, the secondary emission is discussed in broad details because this process plays a prominent role everywhen a portion of energetic electrons is present in the medium surrounding a particular grain.

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Mass-Loss Rate for MF Resin Microspheres

Cited by 59 publications

References 9 publications

Secondary emission from dust grains with a surface layer: comparison between experimental and model results

Secondary emission from dust grains with a surface layer: comparison between experimental and model results

Auto-ionization of LiF grains

Dust Charging in Space‐related Laboratory Experiments: A Review Focused on Secondary Emission

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