Plasma and nanoparticles in cylindrical microwave cavities

F.M.J.H. Wetering, van de, S. Nijdam, J. Beckers, G.M.W. Kroesen

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

42 Downloads (Pure)

Abstract

Low-pressure acetylene plasmas are able to spontaneously form (under certain conditions) dust particles, resulting in a cloud of charged particles up to micrometer sizes levitated in the plasma. A capacitively coupled plasma is ignited in a cylindrical discharge chamber that simultaneously serves as microwave resonator. Microwave cavity resonance spectroscopy (MCRS) is used to determine the electron density of the plasma. However, the accuracy of this method is directly influenced by the presence and abundance of the dust particles. This is studied in more detail by using multiple cavities. The spatial distribution of the dust is visualized with laser light scattering and video imaging thereof. The charge of the particles is also an important parameter in industrial plasma environments, where electromagnetic fields can be used to deflect or attract the particles. To gain more insight into the charging and discharging mechanisms, MCRS is complemented with other electrical measurements when the plasma is switched on and off, providing the important timescales related to these processes.
Original languageEnglish
Title of host publicationProceedings of the 26th Symposium Plasma Physics & Radiation Technology, 11-12 March 2014, Lunteren, the Netherlands
Pages79-79
Publication statusPublished - 2014
Event26th NNV Symposium on Plasma Physics and Radiation Technology, March 11-12, 2014,  Lunteren, The Netherlands - De Werelt, Lunteren, Netherlands
Duration: 11 Mar 201412 Mar 2014
http://www.plasmalunteren.nl/download/2014/26th_symposium_lunteren_2014_book_v05mar2014.pdf

Conference

Conference26th NNV Symposium on Plasma Physics and Radiation Technology, March 11-12, 2014,  Lunteren, The Netherlands
CountryNetherlands
CityLunteren
Period11/03/1412/03/14
Internet address

Fingerprint Dive into the research topics of 'Plasma and nanoparticles in cylindrical microwave cavities'. Together they form a unique fingerprint.

Cite this