About: Lunar Dust Grain Charging by Electron Impact: Dependence of the Surface Potential on the Grain Size

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Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://dx.doi.org/10.1088/0004-637X/738/1/14
Description	The secondary electron emission is believed to play an important role for the dust charging at and close to the lunar surface. However, our knowledge of emission properties of the dust results from model calculations and rather rare laboratory investigations. The present paper reports laboratory measurements of the surface potential on Lunar Highlands Type regolith simulants with sizes between 0.3 and 3 mu m in an electron beam with energy below 700 eV. This investigation is focused on a low-energy part, i.e., {= 100 eV. We found that the equilibrium surface potential of this simulant does not depend on the grain size in our ranges of grain dimensions and the beam energies, however, it is a function of the primary electron beam energy. The measurements are confirmed by the results of the simulation model of the secondary emission from the spherical samples. Finally, we compare our results with those obtained in laboratory experiments as well as those inferred from in situ observations. The secondary electron emission is believed to play an important role for the dust charging at and close to the lunar surface. However, our knowledge of emission properties of the dust results from model calculations and rather rare laboratory investigations. The present paper reports laboratory measurements of the surface potential on Lunar Highlands Type regolith simulants with sizes between 0.3 and 3 mu m in an electron beam with energy below 700 eV. This investigation is focused on a low-energy part, i.e., {= 100 eV. We found that the equilibrium surface potential of this simulant does not depend on the grain size in our ranges of grain dimensions and the beam energies, however, it is a function of the primary electron beam energy. The measurements are confirmed by the results of the simulation model of the secondary emission from the spherical samples. Finally, we compare our results with those obtained in laboratory experiments as well as those inferred from in situ observations. (en)
Title	Lunar Dust Grain Charging by Electron Impact: Dependence of the Surface Potential on the Grain Size Lunar Dust Grain Charging by Electron Impact: Dependence of the Surface Potential on the Grain Size (en)
skos:prefLabel	Lunar Dust Grain Charging by Electron Impact: Dependence of the Surface Potential on the Grain Size Lunar Dust Grain Charging by Electron Impact: Dependence of the Surface Potential on the Grain Size (en)
skos:notation	RIV/00216208:11320/11:10108211!RIV12-GA0-11320___
http://linked.open...avai/riv/aktivita	P S Z
http://linked.open...avai/riv/aktivity	P(GA202/08/0063), P(GAP209/11/1412), P(GD202/08/H057), S, Z(MSM0021620860)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Šafránková, Jana Pavlů, Jiří Vaverka, Jakub Němeček, Zdeněk Beránek, Martin Richterová, Ivana
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Univerzita Karlova v Praze / Matematicko-fyzikální fakulta
http://linked.open...dnocenehoVysledku	210095
http://linked.open...ai/riv/idVysledku	RIV/00216208:11320/11:10108211
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Secondary electron emission; Lunar dust (en)
http://linked.open.../riv/klicoveSlovo	Lunar dust Secondary electron emission
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[D5BA07346FA0]
http://linked.open...i/riv/nazevZdroje	Astrophysical Journal
http://linked.open...in/vavai/riv/obor	BL
http://linked.open...ichTvurcuVysledku	6 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...vavai/riv/projekt	Dust and its charging in the space: Laboratory simulations Laboratory simulations of elementary processes in dusty plasmas Modern trends in plasma physics
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	738
http://linked.open...iv/tvurceVysledku	Beránek, Martin Němeček, Zdeněk Pavlů, Jiří Richterová, Ivana Vaverka, Jakub Šafránková, Jana Mann, I.
http://linked.open...ain/vavai/riv/wos	000294015500014
http://linked.open...n/vavai/riv/zamer	Fyzikální studium objektů a procesů ve sluneční soustavě a v astrofyzikálních systémech
issn	0004-637X
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1088/0004-637X/738/1/14
http://localhost/t...ganizacniJednotka	11320

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