Langmuir Probe Diagnostics of Continuous, Electron Beam Produced Plasma in Argon, Nitrogen and Their Mixtures

reportActive / Technical Report | Accession Number: ADA635464 | Open PDF

Abstract:

Langmuir probe diagnostics have been carried out in the Naval Research Laboratorys Large Area Plasma Processing System LAPPS using a continuous, electron-beam produced plasma. The electron beam was extracted from a hollow-cathode discharge, accelerated using a high-voltage grid and a magnetic field was applied to confine the beam. The plasma was produced in a background of pure argon, nitrogen and their mixtures. The generated plasma had a high density 10exp 9-10exp 11 cmexp -3 like the conventional discharges but a lower electron temperature 1 eV which allows for the processing of energy-sensitive materials. The effect of the operating parameters including hollow cathode and extraction voltages and currents on the plasma characteristics was examined. Further tuning of the plasma properties was achieved by adjustment of the magnetic field and the gas composition.

Author(s):
Lock, E. ; Walton, S. ; Fernsler, R.
Author Organization(s):
NAVAL RESEARCH LAB WASHINGTON DC PLASMA PHYSICS DIV
Descriptive Note:
Conference paper
Supplementary Note:
Presented at 2007 IEEE International Pulsed Power Conference (16th) & IEEE International Conference on Plasma Science (34th), PPPS-2007, in Albuquerque, NM on 17-22 Jun 2007 and published in proceedings of the same, p60-64; 1-4244-0914-4/07. See also ADM002371, 2013 IEEE Pulsed Power Conference, Digest of Technical Papers 1976-2013, and Abstracts of the 2013 IEEE International Conference on Plasma Science.. The original document contains color images.
Pagination:
0006

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Monitor Series:
ONR
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application; JCA_5_Command and Control; JCA_1.2.7_Experimentation; JCA_5.3_Planning; JCA_6_Net Centric; JCA_8_Building Partnerships
Modernization Areas:
Microelectronics
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*NAVAL RESEARCH LABORATORIES, *PLASMA GENERATORS, ELECTRON BEAMS, LANGMUIR PROBES
Field(s)/Group(s):
Test Facilities, Equipment and Methods, Particle Accelerators, Plasma Physics and Magnetohydrodynamics
Keyword(s):
LAPPS(LARGE AREA PLASMA PROCESSING SYSTEM)
Report Date:
2007 Jun 01
Creation Date:
2016 Aug 10