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Title: Observations of a field-aligned ion/ion-beam instability in a magnetized laboratory plasma

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.5017637· OSTI ID:1429109

Collisionless coupling between super Alfvénic ions and an ambient plasma parallel to a background magnetic field is mediated by a set of electromagnetic ion/ion-beam instabilities including the resonant right hand instability (RHI). To study this coupling and its role in parallel shock formation, a new experimental configuration at the University of California, Los Angeles utilizes high-energy and high-repetition-rate lasers to create a super-Alfvénic field-aligned debris plasma within an ambient plasma in the Large Plasma Device. We used a time-resolved fluorescence monochromator and an array of Langmuir probes to characterize the laser plasma velocity distribution and density. The debris ions were observed to be sufficiently super-Alfvénic and dense to excite the RHI. Measurements with magnetic flux probes exhibited a right-hand circularly polarized frequency chirp consistent with the excitation of the RHI near the laser target. To conclude, we compared measurements to 2D hybrid simulations of the experiment.

Research Organization:
Univ. of California, Los Angeles, CA (United States); Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
Sponsoring Organization:
USDOE; USDOD, Defense Threat Reduction Agency (DTRA); National Science Foundation (NSF); Space and Naval Warfare Systems Command (SPAWAR)
Grant/Contract Number:
SC0006538; HDTRA1-12-1-0024; SC0006538:0003; SC0017900; 1414591; FC02-07ER54918; PHY-1561912
OSTI ID:
1429109
Alternate ID(s):
OSTI ID: 1423402
Journal Information:
Physics of Plasmas, Vol. 25, Issue 3; ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 16 works
Citation information provided by
Web of Science

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Cited By (3)

Low-frequency waves produced by a package of laser plasma clouds in a magnetized background journal November 2019
Three Regimes and Four Modes for the Resonant Saturation of Parallel Ion-beam Instabilities journal March 2019
Laboratory Observations of Ultra-low-frequency Analog Waves Driven by the Right-hand Resonant Ion Beam Instability journal February 2020