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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes
ESCI SJR: 0.176 SNIP: 0.48 CiteScore™: 1.3

ISSN Печать: 1093-3611
ISSN Онлайн: 1940-4360

Выпуски:
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High Temperature Material Processes: An International Quarterly of High-Technology Plasma Processes

DOI: 10.1615/HighTempMatProc.v6.i4.70
14 pages

TIME-DEPENDENT PLASMA PROPERTIES STUDIED WITH A 2-D THOMSON SCATTERING SYSTEM

Joost J. A. M. van der Mullen
Department of Applied Physics, Eindhoven University of Technology, P. O. Box 513, 5600 MB Eindhoven, The Netherlands
Marco J. van de Sande
Department of Applied Physics, Eindhoven University of Technology, P.O. Box 513, 5600 MB Eindhoven, The Netherlands
Jeroen Jonkers
Philips Extreme Ultra Violet, Aachen, Germany
Antonio Sola
Departamento de Fisica Aplicada, Universidad de Cordoba, 14071 Cordoba, Spain
Antonio Gamero
Departamento de Fisica Aplicada, Universidad de Cordoba, 14071 Cordoba, Spain
Antonio Rodero
Departamento de Fisica, Universidad de Cordoba, E-14071 Cordoba, Spain

Краткое описание

Thomson scattering was used to monitor the temporal behavior of the electron gas during the power interruption and power modulation of respectively an inductively coupled plasma (ICP) in argon and a capacitively coupled plasma (CCP) in He both operating under atmospheric conditions. In both cases we studied the electron gas during the decay and re-ignition phase. It is found that experimental results can only be understood if we accept that molecular ions play a dominant role during the plasma decay phase. This is remarkable since plasmas in noble gases are known as atomic plasmas. Interesting features are the anomalous heating of the electron gas during the decay of the Ar-ICP and the heating of the higher energy part of the electron energy distribution function (EEDF) in He-CCP. The EEDF of the He-CCP was found to be far from Maxwellian.


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