Magnetic Reconnection Experiments

Baum, P. J.; Bratenahl, A.

doi:10.1016/s0065-2539(08)60096-7

Cited by 42 publications

(15 citation statements)

References 86 publications

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“…For many years experimental studies of current sheets have been systematically conducted by BAUM and BRATENAHL (1980b) in the USA and by Syrovatskii's team (KIRIJ et al, 1979) in the USSR. Their papers have been analyzed in detail in the Kawashima presentation at the previous IAGA assembly.…”

Section: Current Sheets and Reconnectionmentioning

confidence: 99%

“…These data allow us to hope that the substorni can be reproduced in laboratory when the duration of the artificial solar wind flux increases up to 100us. To study this effect BAUM and BRATENAHL (1980a) are designing an installation with a length of about 10m in which the plasma parameters will meet the principle of limited simulation. In the nearest future this installation will go into operation.…”

mentioning

confidence: 99%

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Active experiments in space, laboratory experiments and numerical simulation.

Podgorny

1982

J. geomagn. geoelec

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Section: Current Sheets and Reconnectionmentioning

confidence: 99%

mentioning

confidence: 99%

Active experiments in space, laboratory experiments and numerical simulation.

Podgorny

1982

J. geomagn. geoelec

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“…Current disruptions are characteristic for both classes of experiments where a large current supplied from an external supply is forced through the pulsed plasma. However, these disruptions are localized, typically occurring at the neutral line, and cause only minor variations in the total current [Baum and Bratenahl, 1980a;Ohyabu et al, 1974a], hence should be considered as shifts in the current distribution rather than major disruptions as occur in tokamaks [Mirnov and Sernenov, 1977]. The associated inductive voltage spikes and local current drops have, up to 1980, been explained by the onset of anomalous resistivity caused by current-driven microinstabilities, but this interpretation is not convincing since it is based on incorrect resistivity measurements.…”

Section: Discussionmentioning

confidence: 99%

Magnetic field line reconnection experiments, 4. Resistivity, heating, and energy flow

Stenzel¹,

Gekelman²,

Wild³

1982

J. Geophys. Res.

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Detailed spatial and temporal measurements of the total vector electric field E and current density J in a plasma with dynamic magnetic field line reconnection have been made. The resistivity calculated via the generalized Ohm's law is found to be spatially inhomogeneous with values exceeding the classical resistivity by 1 to 2 orders of magnitude. Resistivity and current density do not maximize in the same locations. The dissipation E · J is determined and analyzed in terms of particle heating and fluid acceleration. Electron heating is found to be the dominant dissipation process in the diffusion region. Independent measurements of the divergence of the Poynting vector ▽ · (E × H), the change in stored magnetic field energy ∂/∂t(B²/2µo), and the dissipation give a consistent, detailed picture of the energy flow. Efficient conversion of electromagnetic energy into particle heating is observed.

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“…The majority of early laboratory experiments on magnetic reconnection were carried out in 'pinch' plasmas, fast high-density pulsed plasma discharges of short duration of a few micro-seconds (Baum and Bratenahl, 1980;Syrovatskii, 1981;Ohyabu et al, 1974;Syrovatskii et al, 1973;Frank et al, 1974). In these experiments it was difficult to diagnose the reconnection region with good spatial and temporal resolution.…”

Section: Neutral Sheet Profiles Measured In Early Laboratory Experimentsmentioning

confidence: 99%

Review of the recent controlled experiments for study of local reconnection physics

Yamada

2014

Earth Planet Sp

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The present paper reviews the recent laboratory experiments on magnetic reconnection focussing on the local features of the reconnection region. It is very important to recognize that magnetohydrodynamics (MHD) often breaks down locally in the thin reconnection layer, while globally, the reconnecting plasma has large Lundquist number and is well approximated by MHD equations. Precise measurements of the neutral sheet profile can provide important clues to help understand the non-MHD physics mechanisms of reconnection. Thanks to significant progress in data acquisition technology, the detailed magnetic field structure of the neutral sheet has been measured in laboratory plasmas.

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Magnetic Reconnection Experiments

Cited by 42 publications

References 86 publications

Active experiments in space, laboratory experiments and numerical simulation.

Active experiments in space, laboratory experiments and numerical simulation.

Magnetic field line reconnection experiments, 4. Resistivity, heating, and energy flow

Review of the recent controlled experiments for study of local reconnection physics

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