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Showing 1 to 5 of 5 for “"helicon antenna"”.

  1. Physics of the helicon antenna on the prototype materials exposure experiment

    Piotrowicz, Pawel A.University of Illinois at Urbana-Champaign2018

    "Proto-MPEX has been operating in a high-density “helicon-mode” of operation. The helicon mode of operation is classified by an increase in target on-axis electron density (6e19 m^-3) and a decrease in electron temperature (2 – 3 eV) during a helicon pulse. This transition is observed when …

    uiuc Repository record

  2. Secondary Plasma Sources for Ionized Physical Vapor Deposition

    Hayden, Douglas BrentonUniversity of Illinois at Urbana-Champaign2015

    The helicon antenna sits remotely outside the vacuum system, so all shadowing and contamination problems which the other two sources exhibit are eliminated. Ionization fractions to the substrate of 51 +/- 10% with a deposition rate of 847 +/- 42 A/min. are found. Without the antenna, the ionization …

    uiuc Repository record

  3. Emission spectroscopy for the study of electric propulsion plasmas

    Matlock, Taylor ScottMassachusetts Institute of Technology2009

    … This thesis examines the use of a miniaturized Helicon plasma source for an open-ended, electrode-less, cathode-less thruster through emission spectroscopy. The use of non-invasive diagnostics allows the measurement of important plasma parameters near the ionization region, where the plasma …

    mit Repository record

  4. Physics of RF heating systems on proto-MPEX

    Piotrowicz, Pawel A.University of Illinois at Urbana-Champaign2019

    … production on Proto-MPEX is accomplished by a helicon plasma source. Helicon plasma sources have been shown to efficiently produce high-density plasmas for a relatively low amount of RF power. Efficient electron density production of helicon plasma sources in light ions is hypothesized to be …

    uiuc Repository record

  5. Development and Characterization of Conventional and Inverted Helicon Plasma Sources

    Masters, Benjamin C.2017

    Made available in DSpace on 2017-07-06T18:55:19Z (GMT). No. of bitstreams: 3 Masters_Benjamin_C_MS.pdf: 18600523 bytes, checksum: 3032067e89a45e39cfe4a8170385b677 (MD5) Masters_Benjamin_C_MS_ABS.pdf: 52155 bytes, checksum: 4de6d980b5c087fa233baf754ce1dc2b (MD5) license.txt: 4813 bytes, checksum: …

    uiuc Repository record