Thomson, Raman and Rayleigh scattering on atmospheric plasma jets

A.F.H. Gessel, van

Research output: Contribution to conferenceOtherAcademic

Abstract

Non-equilibrium atmospheric pressure plasma jets are the subject of growing interest, due to their applicability in many fields, including material processing, surface treatment and medical applications. However the plasma operates in contact with air, thus species like oxygen and nitrogen diffuse into the plasma. We show a method to characterize an argon jet flowing into open air with active spectroscopy. As plasma source we use a microwave surfatron launcher. Three types of laser scattering are investigated: Rayleigh scattering (scattering on heavy particles), Thomson scattering (scattering on free electrons) and Raman scattering (scattering on molecules). In a plasma with air the Thomson and Raman signals overlap. We separate these contributions with a specially designed fitting method, allowing us to simultaneously measure the electron density, electron temperature, molecular densities and the gas temperature
Original languageEnglish
Number of pages16
Publication statusPublished - 2010
Event13th Euregional Workshop on the Exploration of Low Temperature Plasma Physics (WELTPP 2010) - Conference centre "Rolduc", Kerkrade, Netherlands
Duration: 25 Nov 201026 Nov 2010

Workshop

Workshop13th Euregional Workshop on the Exploration of Low Temperature Plasma Physics (WELTPP 2010)
Abbreviated titleWELTPP-13
CountryNetherlands
CityKerkrade
Period25/11/1026/11/10

Fingerprint Dive into the research topics of 'Thomson, Raman and Rayleigh scattering on atmospheric plasma jets'. Together they form a unique fingerprint.

Cite this