Journal article
Laser Heating of 2-D Dusty Plasmas Using a Random Arc Pattern
IEEE Transactions on Plasma Science, Vol.44(4), pp.549-552
12/01/2015
DOI: 10.1109/TPS.2015.2498526
Abstract
A laser heating method for 2-D dusty plasmas is improved so that particle motion better resembles thermal motion in a liquid. Laser beams are rastered in a pattern of arcs with three randomly varying parameters: curvature, initial angle, and the speed of the laser footprint as it follows an arc. An experimental test is performed using particle tracking to generate power spectra of velocities. Peaks in these spectra indicate coherence in the particle motion, which is a discrepancy when compared with the stochastic nature of molecular motion in a liquid. We find that spectral peaks are diminished tenfold by rastering with random arcs as compared with a previously used pattern in which beams moved in straight lines at constant speeds.
Details
- Title: Subtitle
- Laser Heating of 2-D Dusty Plasmas Using a Random Arc Pattern
- Creators
- Zach Haralson - University of IowaJohn A Goree - University of Iowa, Physics and Astronomy
- Resource Type
- Journal article
- Publication Details
- IEEE Transactions on Plasma Science, Vol.44(4), pp.549-552
- Publisher
- IEEE; PISCATAWAY
- DOI
- 10.1109/TPS.2015.2498526
- ISSN
- 0093-3813
- eISSN
- 1939-9375
- Number of pages
- 4 pages
- Grant note
- DOI: 10.13039/100000166, name: Division of Physics; DOI: 10.13039/100000015, name: U.S. Department of Energy; DOI: 10.13039/100000104, name: National Aeronautics and Space Administration; DOI: 10.13039/100000001, name: National Science Foundation
- Language
- English
- Date published
- 12/01/2015
- Description audience
- Academic; Trade
- Academic Unit
- Mechanical Engineering; Physics and Astronomy
- Record Identifier
- 9983561294802771
Metrics
435 Record Views