Measurements of plasma response to driven perturbations in a dipole magnetic field

Jacob W. McLaughlin; Fred N. Skiff

doi:10.1063/5.0308268

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Measurements of plasma response to driven perturbations in a dipole magnetic field

Journal article

Open access

Peer reviewed

Measurements of plasma response to driven perturbations in a dipole magnetic field

Jacob W. McLaughlin and Fred N. Skiff

Physics of plasmas, Vol.33(3), 032112

03/2026

DOI: 10.1063/5.0308268

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Abstract

Measurements of wave–particle interactions are important for the scientific understanding of various plasma phenomena. Laser-induced fluorescence techniques provide non-intrusive, spatially resolved information on the plasma response to electrostatic perturbations. Employing this technique to diagnose plasma fluctuations in dipole magnetic fields can provide insight into wave–particle interactions, mode conversion, and wave reflection and absorption. Externally driven ion acoustic waves are diagnosed as they propagate through the magnetic field gradient in the equatorial region of a permanent magnet. Evidence of reflected waves and strong ion responses is presented for a range of wave frequencies. Results are compared to other observational, simulated, and experimental works.

Details

Title: Subtitle: Measurements of plasma response to driven perturbations in a dipole magnetic field
Creators: Jacob W. McLaughlin - University of Iowa
Fred N. Skiff - University of Iowa
Resource Type: Journal article
Publication Details: Physics of plasmas, Vol.33(3), 032112
DOI: 10.1063/5.0308268
ISSN: 1070-664X
eISSN: 1089-7674
Publisher: AIP Publishing
Number of pages: 9
Grant note: DE-SC0022969 / U.S. Department of Energy (10.13039/100000015)
Language: English
Date published: 03/2026
Academic Unit: Physics and Astronomy
Record Identifier: 9985147208702771

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