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

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 mea...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:The Astrophysical journal 2011-09, Vol.738 (1), p.14-jQuery1323904125958='48'
Hauptverfasser: NEMECEK, Z, PAVLU, J, SAFRANKOVA, J, BERANEK, M, RICHTEROVA, I, VAVERKA, J, MANN, I
Format: Artikel
Sprache:eng
Schlagworte:
Astronomy
ASTROPHYSICS, COSMOLOGY AND ASTRONOMY
BEAMS
DUSTS
Earth, ocean, space
ELECTRON BEAMS
ELECTRON EMISSION
EMISSION
Exact sciences and technology
GRAIN SIZE
LEPTON BEAMS
MICROSTRUCTURE
MOON
PARTICLE BEAMS
POTENTIALS
SATELLITES
SECONDARY EMISSION
SIMULATION
SIZE
SURFACE POTENTIAL
SURFACES
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung: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 Delta *mm in an electron beam with energy below 700 eV. This investigation is focused on a low-energy part, i.e.,
ISSN:0004-637X
1538-4357
DOI:10.1088/0004-637X/738/1/14