Temporally Resolved Langmuir Probe Measurements in LAPPS

Abstract

Electron beams efficiently ionize and dissociate gas, to form low temperature (<1.5 eV) high-density (1O(to the 10)-lO(to the 12)cm(to the -3) plasmas with low internal fields. These plasma sources have culminated in LAPPS, NRL's Large Area Plasma Processing System for surface modification of materials. Single Langmuir probes were constructed and used to determine global plasma parameters (electron temperature, density, and plasma potential) in modulated plasmas generated by high-energy (2 keV) electron beams. This work describes in detail the construction of probes, applications of probes in modulated systems and magnetic fields, data acquisition, and data analysis used in the study of electron beam generated plasmas.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Apr 12, 2004
Accession Number
ADA422457

Entities

People

  • Darrin Leonhardt
  • George Gatling
  • William Amatucci

Organizations

  • United States Naval Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Acquisition
  • Charged Particles
  • Construction
  • Construction Materials
  • Data Acquisition
  • Data Analysis
  • Electron Beams
  • Electron Density
  • Electron Emission
  • Electrons
  • Electrostatic Probes
  • Langmuir Probes
  • Low Temperature
  • Magnetic Fields
  • Materials
  • Measurement
  • Power Supplies

Fields of Study

  • Physics

Readers

  • Pulsed Power and Plasma Physics.

Technology Areas

  • Directed Energy
  • Microelectronics