Sheet Fluorescence and Annular Analysis of Ultracold Neutral Plasmas

Journal Article · Mon Mar 30 04:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3122289· OSTI ID:21300446

Castro, J; Gao, H; Killian, T C ^[1]

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1. Rice University, Department of Physics and Astronomy, 6100 Main St., Houston, Texas, 77005 (United States)

Annular analysis of fluorescence imaging measurements on Ultracold Neutral Plasmas (UNPs) is demonstrated. Spatially-resolved fluorescence imaging of the strontium ions produces a spectrum that is Doppler-broadened due to the thermal ion velocity and shifted due to the ion expansion velocity. The fluorescence excitation beam is spatially narrowed into a sheet, allowing for localized analysis of ion temperatures within a volume of the plasma with small density variation. Annular analysis of fluorescence images permits an enhanced signal-to-noise ratio compared to previous fluorescence measurements done in strontium UNPs. Using this technique and analysis, plasma ion temperatures are measured and shown to display characteristics of plasmas with strong coupling such as disorder induced heating and kinetic energy oscillations.

• OSTI ID: 21300446
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1114; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
COLD PLASMA
EXCITATION
FLUORESCENCE
IMAGES
ION TEMPERATURE
KINETIC ENERGY
PLASMA DENSITY
PLASMA SHEET
PLASMA WAVES
SIGNAL-TO-NOISE RATIO
STRONTIUM IONS
VELOCITY