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The energy-based scaling of a thin current sheet: Case study
Yu L Sasunov1, M L Khodachenko2, I I Alexeev3
1Space Research Institute Austrian Academy of Sciences Graz Austria.
Abstract:
The influence of average plasma energy E~ on the half thickness ℓ of a thin current sheet (TCS) is investigated for three cases of TCSs crossings. The value of ℓ was estimated from the magnetic field data by means of Cluster observations. The obtained scaling values for TCSs, Z~=ℓ/ρT, where ρ is the thermal Larmor radius, were compared with the scaling Zμ=22E~/T, where E~ and T are the average plasma energy and the temperature of plasma, which assumes a specific dynamics (conservation of magnetic flux through the trajectory segment) of the current carriers. The comparison of Z~ and Z shows a good agreement.
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