Excitation of electrostatic waves in the electron cyclotron frequency range during magnetic reconnection in laboratory overdense plasmas

Kuwahata, Akihiro; Igami, H.; Kawamori, Eiichirou; Kogi, Y.; Inomoto, Michiaki; Ono, Yasushi

doi:10.1063/1.4900872

Cited by 5 publications

(2 citation statements)

References 18 publications

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“…In-situ space observations of magnetic reconnection have disclosed that electromagnetic and electrostatic fluctuations are generated in and around reconnecting current sheets (see, e.g., [73,74,75]. Laboratory experiments [76,77,78,79,80,23] revealed electromagnetic fluctuations in the lower hybrid frequency range [74,76,23] as well as in the ion acoustic [78], Trivelpiece-Gould [77] and Langmuir wave frequency ranges [81]. In the VINETA.II experiments [23], reconnection was driven in a linear laboratory device (cf.…”

Section: Electromagnetic Fluctuations In Reconnection Regionsmentioning

confidence: 99%

Hybrid-Kinetic Approach: Inertial Electrons

Jain¹,

Muñoz²,

Büchner³

2022

Preprint

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Hybrid-kinetic simulations describe ion-scale kinetic phenomena in space plasmas by considering ions kinetically, i.e. as particles, while electrons are modelled as a fluid. Most of the existing hybrid-kinetic codes neglect the electron mass (see chapter 3) for a simplified calculation of the electromagnetic fields. There are, however, situations in which delay in the electrons response due to the electron inertia matters. This chapter concentrates on hybrid-kinetic simulation models which take the finite mass of the electron fluid into account. First a review is given of the history of including the finite electron mass in hybrid-kinetic models. Then the equations are discussed which additionally have to be solved compared to the mass-less hybrid-kinetic models. For definiteness their numerical implementation without additional approximations is illustrated by describing a hybrid-kinetic code, CHIEF. The importance of the consideration of the finite electron mass are discussed for typical applications (magnetic reconnection, plasma turbulence, collisionless shocks and global magnetospheric simulations). In particular the problem of guide field magnetic reconnection is addressed in some detail. Possible next steps towards further improvements of hybrid-kinetic simulations with finite electron mass are suggested.

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Section: Electromagnetic Fluctuations In Reconnection Regionsmentioning

confidence: 99%

Hybrid-Kinetic Approach: Inertial Electrons

Jain¹,

Muñoz²,

Büchner³

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…Laboratory experiments [2][3][4][5][6][7] and in-situ space observations [8][9][10] of magnetic reconnection often show electromagnetic and electrostatic fluctuations as signatures of these instabilities: Large amplitude whistler waves along with ion acoustic and Langmuir turbulence were observed in an early reconnection laboratory experiment by Gekelman and Stenzel 11 . In the Magnetic Reconnection Experiment (MRX), electrostatic 12 and electromagnetic 2 fluctuations in the lower hybrid frequency ω lh ≈ √ ω ci ω ce range were observed at the edge (low plasma β) and center (high plasma β) of the current sheet, respectively, where plasma β is defined as the ratio of the plasma and magnetic pressure.…”

Section: Introductionmentioning

confidence: 99%