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Title: Linear trap with three orthogonal quadrupole fields for dust charging experiments

Abstract

Investigations of charging processes on a single dust grain under controlled conditions in laboratory experiments are the unique way to understand the behavior of dust grains in complex plasma (in space, in laboratory, or in technological applications). An electrodynamic trap is often utilized for both holding a single grain and continuously measuring its charge-to-mass ratio. We propose a modified design of the linear quadrupole trap with the electrodes split into two parts; each of them being supplied by a designated source. The paper presents basic calculations and the results of the trap prototype tests. These tests have confirmed our expectations and have shown that the suggested solution is fully applicable for the dust charging experiments. The uncertainty of determination of the dust grain charge does not exceed 10{sup -3}. The main advantages of the suggested design in comparison with other traps used for dust investigations can be summarized as: The trap (i) is more opened, thus it is suitable for a simultaneous application of the ion and electron beams and UV source; (ii) facilitates investigations of dust grains in a broader range of parameters; and (iii) allows the grain to move along the axis in a controlled way.

Authors:
; ; ; ;  [1];  [2]
  1. Charles University, Faculty of Mathematics and Physics, Prague (Czech Republic)
  2. CGC Instruments, Chemnitz (Germany)
Publication Date:
OSTI Identifier:
22093994
Resource Type:
Journal Article
Journal Name:
Review of Scientific Instruments
Additional Journal Information:
Journal Volume: 83; Journal Issue: 11; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0034-6748
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; DESIGN; DUSTS; ELECTRON BEAMS; IONS; PLASMA; PLASMA DIAGNOSTICS; QUADRUPOLES; TRAPS

Citation Formats

Beranek, Martin, Nemecek, Zdenek, Safrankova, Jana, Jerab, Martin, Pavlu, Jiri, and Cermak, Ivo. Linear trap with three orthogonal quadrupole fields for dust charging experiments. United States: N. p., 2012. Web. doi:10.1063/1.4766955.
Beranek, Martin, Nemecek, Zdenek, Safrankova, Jana, Jerab, Martin, Pavlu, Jiri, & Cermak, Ivo. Linear trap with three orthogonal quadrupole fields for dust charging experiments. United States. doi:10.1063/1.4766955.
Beranek, Martin, Nemecek, Zdenek, Safrankova, Jana, Jerab, Martin, Pavlu, Jiri, and Cermak, Ivo. Thu . "Linear trap with three orthogonal quadrupole fields for dust charging experiments". United States. doi:10.1063/1.4766955.
@article{osti_22093994,
title = {Linear trap with three orthogonal quadrupole fields for dust charging experiments},
author = {Beranek, Martin and Nemecek, Zdenek and Safrankova, Jana and Jerab, Martin and Pavlu, Jiri and Cermak, Ivo},
abstractNote = {Investigations of charging processes on a single dust grain under controlled conditions in laboratory experiments are the unique way to understand the behavior of dust grains in complex plasma (in space, in laboratory, or in technological applications). An electrodynamic trap is often utilized for both holding a single grain and continuously measuring its charge-to-mass ratio. We propose a modified design of the linear quadrupole trap with the electrodes split into two parts; each of them being supplied by a designated source. The paper presents basic calculations and the results of the trap prototype tests. These tests have confirmed our expectations and have shown that the suggested solution is fully applicable for the dust charging experiments. The uncertainty of determination of the dust grain charge does not exceed 10{sup -3}. The main advantages of the suggested design in comparison with other traps used for dust investigations can be summarized as: The trap (i) is more opened, thus it is suitable for a simultaneous application of the ion and electron beams and UV source; (ii) facilitates investigations of dust grains in a broader range of parameters; and (iii) allows the grain to move along the axis in a controlled way.},
doi = {10.1063/1.4766955},
journal = {Review of Scientific Instruments},
issn = {0034-6748},
number = 11,
volume = 83,
place = {United States},
year = {2012},
month = {11}
}