Ion energy and angular distributions in inductively coupled Argon RF discharges

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We report measurements of the energies and angular distributions of positive ions in an inductively coupled argon plasma in a GEC reference cell. Use of two separate ion detectors allowed measurement of ion energies and fluxes as a function of position as well as ion angular distributions on the discharge centerline. The inductive drive on our system produced high plasma densities (up to 10{sup 12}/cm{sup 3} electron densities) and relatively stable plasma potentials. As a result, ion energy distributions typically consisted of a single feature well separated from zero energy. Mean ion energy was independent of rf power and varied ... continued below

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53 p.

Creation Information

Woodworth, J.R.; Riley, M.E. & Meister, D.C. March 1, 1996.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

We report measurements of the energies and angular distributions of positive ions in an inductively coupled argon plasma in a GEC reference cell. Use of two separate ion detectors allowed measurement of ion energies and fluxes as a function of position as well as ion angular distributions on the discharge centerline. The inductive drive on our system produced high plasma densities (up to 10{sup 12}/cm{sup 3} electron densities) and relatively stable plasma potentials. As a result, ion energy distributions typically consisted of a single feature well separated from zero energy. Mean ion energy was independent of rf power and varied inversely with pressure, decreasing from 29 eV to 12 eV as pressure increased form 2.4 m Torr to 50 mTorr. Half-widths of the ion angular distributions in these experiments varied from 5 degrees to 12.5 degrees, or equivalently, transverse temperatures varied form 0.2 to 0.5 eV with the distributions broadening as either pressure or RF power were increased.

Physical Description

53 p.

Notes

INIS; OSTI as DE96009170

Source

  • Other Information: PBD: Mar 1996

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  • Other: DE96009170
  • Report No.: SAND--96-0535
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/212756 | External Link
  • Office of Scientific & Technical Information Report Number: 212756
  • Archival Resource Key: ark:/67531/metadc672595

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Office of Scientific & Technical Information Technical Reports

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  • March 1, 1996

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • April 13, 2016, 2:41 p.m.

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Woodworth, J.R.; Riley, M.E. & Meister, D.C. Ion energy and angular distributions in inductively coupled Argon RF discharges, report, March 1, 1996; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc672595/: accessed October 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.