中性粒子存在下での磁気リコネクションフローの数値シミュレーションと実験検証

抄録

Magnetic reconnection accompanying ion heating and acceleration has been investigated in observation of solar flare and laboratory experiments. In order to clarify this mechanism, particularly in laboratory experiments, we simulated neutral flow driven by ion flow using energy conserved LBM (Lattice Boltzmann Method) and, for verification of the results, measured neutral speed and temperature experimentally. A significant correlation between neutral flow and neutral heating was confirmed, which is in agreement with experimental results. In addition, this result shows that neutral out-flow speed at the midplane (z=0) reached 1.9km/s, whereas the ion speed reached 2.4km/s, which indicates that even if we measure hydrogen neutral Doppler shift and its broadening, so that we can interpret neutral speed as ion speed.