TRANSPORT IN MAGNETIZED PLASMAS INTERROGATED BY LCIF

1
TRANSPORT IN MAGNETIZED PLASMAS INTERROGATED BY
LCIF

• Plasma transport magnetized low temperature
  plasmas is important to understand but
  challenging to diagnose. The plasma leak width
  through cusps at anodes contributes to loss of
  plasma.
• Collaborative study to address fundamental issues
  about electron loss
• Segmented, magnetized electrode to establish and
  quantify plasma confinement (A. Hubble and J.
  Foster, U. Michigan).
• Laser Collisional Induced Fluorescence (LCIF) to
  interrogate plasma distribution (E. Barnat and
  B. Weatherford, SNL).

• Electron loss widths compared to computed ion,
  electron and hybrid gyroradii.

• Measured Electron densities by LCIF and magnetic
  fields above magnetized electrode assembly

HIGHLIGHT
PLSC_0613
2
LASER LIGHT SCATTERING DURING PLASMA SYNTHESIS OF
SILICON NANOPARTICLES

• Using a newly constructed plasma reactor and
  laser light scattering experiment, nucleation,
  growth and movement of silicon nanoparticles in a
  silane-argon plasma are being studied.
• Periodic laser light scattering is observed from
  the nanoparticles as they nucleate, grow, become
  trapped above the electrode, and are finally
  swept out of the reactor with flow. The entire
  cycle repeats.
• The mechanism of this phenomena is being studied
  by combining experiments with theoretical
  modeling.

t 0 s
t 17.7 s
t 8.8 s
t 26.5 s
upper electrode
lower electrode
t 44.2 s
t 53.1 s
t 61.9 s
t 35.4 s
HIGHLIGHT
PLSC_0613