Theoretical model for study of the voltage-current curve of a Langmuir-probe used in the hot region of the ECR plasma

L. Kenéz, J. Karácsony, A. Derzsi, S. Biri

Research output: Contribution to journalArticle

Abstract

In the last years the ATOMKI-ECRIS group started a local plasma diagnostics research project, to adapt the probe to the ECR plasma conditions. Until now we made progress in the study of the cold plasma region. The results has been reported in e.g. [L. Kenéz, S. Biri, J. Karácsony, A. Valek, Nucl. Instrum. Methods Phys. Res. B 187 (2) (2002) 249; L. Kenéz, S. Biri, J. Karácsony, A. Valek, T. Nakagawa, K.E. Stiebing, V. Mironov, Rev. Sci. Instrum. 73 (2) (2002) 617]. In this Letter we make a step further report the first experiments carried out in the hot ECR plasma. We used a simple probe inserted in the hot resonant plasma. We point out that this probe works as emitting probe. We developed a theoretical model to explain the unusual shaped voltage-current characteristics and tested its validity using computational study of the presented theory.

Original languageEnglish
Pages (from-to)4927-4931
Number of pages5
JournalPhysics Letters, Section A: General, Atomic and Solid State Physics
Volume372
Issue number29
DOIs
Publication statusPublished - Jul 7 2008

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electrostatic probes
probes
electric potential
curves
plasma diagnostics
research projects
high temperature plasmas
cold plasmas

Keywords

  • ECRIS
  • Langmuir-probe
  • Plasma diagnostics
  • Simple and emitting probe

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Theoretical model for study of the voltage-current curve of a Langmuir-probe used in the hot region of the ECR plasma. / Kenéz, L.; Karácsony, J.; Derzsi, A.; Biri, S.

In: Physics Letters, Section A: General, Atomic and Solid State Physics, Vol. 372, No. 29, 07.07.2008, p. 4927-4931.

Research output: Contribution to journalArticle

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