| Title: |
The effect of a direct current field on the microparticle charge in the plasma afterglow |
| Authors: |
Wörner, Lisa; Ivlev, Alexei, V.; Couëdel, Lénaïc; Huber, Peter; Schwabe, Mierk; Hagl, Tania; Mikikian, Maxime; Boufendi, Laïfa; Skvortsov, Alexander; Lipaev, Andrey, M.; Molotkov, Vladimir, I.; Petrov, Oleg; Fortov, Vladimir, E.; Thomas, Hubertus, M.; Morfill, Gregor, E. |
| Contributors: |
Groupe de recherches sur l'énergétique des milieux ionisés (GREMI); Université d'Orléans (UO)-Centre National de la Recherche Scientifique (CNRS); Max Planck Institute for Extraterrestrial Physics (MPE); Max-Planck-Gesellschaft; Physique des interactions ioniques et moléculaires (PIIM); Aix Marseille Université (AMU)-Centre National de la Recherche Scientifique (CNRS); Department of Chemical and Biomolecular Engineering; Yuri Gagarine Cosmonauts Training Center; Russian Academy of Sciences Moscow (RAS); Joint Institute for High Temperatures of the RAS (JIHT) |
| Source: |
ISSN: 1070-664X. |
| Publisher Information: |
CCSD; American Institute of Physics |
| Publication Year: |
2013 |
| Collection: |
Université d'Orléans: HAL |
| Subject Terms: |
Dusty plasmas; Complex plasmas; Charge; Residual Charge; Afterglow; 52.27.Lw; [SPI.PLASMA]Engineering Sciences [physics]/Plasmas; [PHYS.PHYS.PHYS-PLASM-PH]Physics [physics]/Physics [physics]/Plasma Physics [physics.plasm-ph] |
| Description: |
International audience ; Residual charges of individual microparticles forming dense clouds were measured in a RF discharge afterglow. Experiments were performed under microgravity conditions on board the International Space Station, which ensured particle levitation inside the gas volume after the plasma switch-off. The distribution of residual charges as well as the spatial distribution of charged particles across the cloud were analyzed by applying a low-frequency voltage to the electrodes and measuring amplitudes of the resulting particle oscillations. Upon "free decharging" conditions, the charge distribution had a sharp peak at zero and was rather symmetric (with charges concentrated between -10e and +10e), yet positively and negatively charged particles were homogeneously distributed over the cloud. However, when decharging evolved in the presence of an external DC field (applied shortly before the plasma switch-off) practically all residual charges were positive. In this case, the overall charge distribution had a sharp peak at about þ15e and was highly asymmetric, while the spatial distribution exhibited a significant charge gradient along the direction of the applied DC field. |
| Document Type: |
article in journal/newspaper |
| Language: |
English |
| DOI: |
10.1063/1.4843855 |
| Availability: |
https://hal.science/hal-00933972; https://doi.org/10.1063/1.4843855 |
| Accession Number: |
edsbas.C53B98C |
| Database: |
BASE |