skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Field Electron Emission from Gold Dust Grains

Abstract

There is a number of areas in space where hot electrons represent a substantial constituent of the plasma environment. In such a case, any immersed dust grain could reach a very high negative surface potential. This potential is then limited by the field electron emission.In present contribution, we continue our previous investigation using 3D-electrodynamic quadrupole for dust grain trapping. We are able to charge a single trapped grain up to several hundreds of volts of negative surface potential using an electron gun. This potential is sufficient for observations of the field emission from micron size grains. Because there is lack of data on field electron emission from dielectric materials, we use gold spheres. Observed work function was in accordance with tabulated value. Nevertheless, the coarseness of the grains surfaces should be taken into account.

Authors:
; ; ;  [1]
  1. Charles University, Faculty of Mathematics and Physics, V Holesovickach 2, Prague (Czech Republic)
Publication Date:
OSTI Identifier:
20726728
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 799; Journal Issue: 1; Conference: 4. international conference on the physics of dusty plasmas, Orleans (France), 13-17 Jun 2005; Other Information: DOI: 10.1063/1.2134582; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; COSMIC DUST; DIELECTRIC MATERIALS; ELECTRODYNAMICS; ELECTRON EMISSION; ELECTRON GUNS; ELECTRONS; FIELD EMISSION; GOLD; PLASMA; QUADRUPOLES; SURFACE POTENTIAL; SURFACES; TRAPPING; WORK FUNCTIONS

Citation Formats

Pavlu, J., Richterova, I., Safrankova, J., and Nemecek, Z.. Field Electron Emission from Gold Dust Grains. United States: N. p., 2005. Web. doi:10.1063/1.2134582.
Pavlu, J., Richterova, I., Safrankova, J., & Nemecek, Z.. Field Electron Emission from Gold Dust Grains. United States. doi:10.1063/1.2134582.
Pavlu, J., Richterova, I., Safrankova, J., and Nemecek, Z.. Mon . "Field Electron Emission from Gold Dust Grains". United States. doi:10.1063/1.2134582.
@article{osti_20726728,
title = {Field Electron Emission from Gold Dust Grains},
author = {Pavlu, J. and Richterova, I. and Safrankova, J. and Nemecek, Z.},
abstractNote = {There is a number of areas in space where hot electrons represent a substantial constituent of the plasma environment. In such a case, any immersed dust grain could reach a very high negative surface potential. This potential is then limited by the field electron emission.In present contribution, we continue our previous investigation using 3D-electrodynamic quadrupole for dust grain trapping. We are able to charge a single trapped grain up to several hundreds of volts of negative surface potential using an electron gun. This potential is sufficient for observations of the field emission from micron size grains. Because there is lack of data on field electron emission from dielectric materials, we use gold spheres. Observed work function was in accordance with tabulated value. Nevertheless, the coarseness of the grains surfaces should be taken into account.},
doi = {10.1063/1.2134582},
journal = {AIP Conference Proceedings},
number = 1,
volume = 799,
place = {United States},
year = {Mon Oct 31 00:00:00 EST 2005},
month = {Mon Oct 31 00:00:00 EST 2005}
}