AN EXPERIMENTAL STUDY OF THE CYLINDRICAL LANGMUIR PROBE RESPONSE IN THE TRANSITION REGIME,

Abstract

Experiments were performed in a highly expanded low density flowing argon plasma using both single and double probes. Results are obtained in the near free-molecule regime over a wide range of ratios of Debye length to probe radius, probe length to probe radius, and probe radius to relevant mean free path. The effect of collisions on the ion-saturation current, the retarding field electron current, the floating potential and the inferred electron temperature was investigated experimentally. An existing approximate analysis describing the collisional single probe ion-saturation current and the retarding field electron current was extended to describe the collisional double probe characteristic and magnitude of the single probe floating potential. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1969
Accession Number
AD0711095

Entities

People

  • E. W. Peterson
  • L. Talbot
  • R. H. Kirchhoff

Organizations

  • University of California, Berkeley

Tags

DTIC Thesaurus Topics

  • Collisions
  • Electrons
  • Langmuir Probes
  • Low Density
  • Mean Free Path
  • Molecules
  • Probes
  • Saturation
  • Transitions

Fields of Study

  • Physics

Readers

  • Plasma Physics.

Technology Areas

  • AI & ML
  • AI & ML - Bayesian Inference
  • Microelectronics