Dataset
Dataset for Coulomb expansion of a thin dust cloud observed experimentally under afterglow plasma conditions
University of Iowa
07/21/2025
DOI: 10.25820/data.007806
Abstract
This dataset contains four sets of time-resolved raw images, each captured at 1000 frames per second using a side-view video camera. The data were acquired from four separate experimental runs conducted under identical plasma conditions, with the only variation being the number of particles levitated prior to plasma was turned off. The respective particle counts were 404, 578, 1055, and 2100. Following the termination of the plasma, a vertical slice of the dust cloud was imaged as the particles fell under gravity, illuminated by a vertically aligned laser sheet. During the afterglow phase, the dust particles acquired a positive charge and experienced a slow downward motion due to the balancing influence of an upward electric force. Simultaneously, the particles underwent horizontal expansion driven by mutual Coulomb repulsion. Since the strength of Coulomb repulsion scales with particle number, the four datasets reveal distinct rates of lateral expansion, corresponding to the varying initial particle densities in each experimental run. The images provided here are the source data for the analysis presented in the paper: N. Chaubey, and J. Goree, “Coulomb expansion of a thin dust cloud observed experimentally under afterglow plasma conditions," Physics of Plasmas 57, 205202 (2022). They are also intended for inclusion in a broader collection of dusty plasma datasets contributed by various researchers, as part of the ongoing “DustNET” project led by Dr. Jeph Wang at Los Alamos National Laboratory.
Details
- Title: Subtitle
- Dataset for Coulomb expansion of a thin dust cloud observed experimentally under afterglow plasma conditions
- Creators
- Neeraj Chaubey - University of Iowa, Physics and AstronomyJohn A Goree - University of Iowa, Physics and Astronomy
- Contributors
- Brian Westra (Data Curator) - University of Iowa, Humanities and Social Sciences/Scholarly Impact
- Resource Type
- Dataset
- DOI
- 10.25820/data.007806
- Publisher
- University of Iowa
- Grants
- Strongly-Coupled Dusty Plasmas, DE-SC0014566, United States Department of Energy (United States, Washington) - DOEDepartment of Defense Multidisciplinary Research Program of the University Research Initiative, W911NF-18–1-0240, United States Department of the Army (United States, Arlington) - DA1672641, Jet Propulsion Laboratory (United States, La Cañada Flintridge) - JPL
- Language
- English
- Date collected
- 01/10/2022
- Date published
- 07/21/2025
- Academic Unit
- Physics and Astronomy; Humanities and Social Sciences/Scholarly Impact; Mechanical Engineering
- Record Identifier
- 9984842935702771
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