Observations of a field-aligned ion/ion-beam instability in a magnetized laboratory plasma
- Univ. of California, Los Angeles, CA (United States). Dept. of Physics and Astronomy
- Univ. of California, Los Angeles, CA (United States). Dept. of Physics and Astronomy; Princeton Univ., NJ (United States). Dept. of Astrophysical Sciences
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
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
Web of Science
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 |
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Related Subjects
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
79 ASTRONOMY AND ASTROPHYSICS
Beam instability
parallel shock
plasma waves
Shock waves
Nonlinear acoustics
Spectroscopy
Time resolved spectroscopy
Lasers
Particle beam optics
Chemical analysis
Optical metrology
Hydrodynamic waves
Plasma devices