等温的非可逆膨張過程の動力学

概要

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The expansion of plasma into vacuum in a non-uniform magnetic channel, and the thermalization by the production of shock wave, are hydromagnetically considered in relation to the MACETIE experiment. The system of hydromagnetic equations is reduced to a system of equations for a one dimmensional problem, under the assumption of low B. Approximate solutions for the plasma flow into a weak magnetic field from a straight strong field, are deduced. in approximate solution for the plasma flow into a weak field from a strong mirror field, also deduced. In contrast to the case of an uniform magnetic channel, one of the former solutions produces a uniform supersonic stream with a certain length. The later solution also produces a quasi uniform stream, the length which is approximately proportional, to the mirror ratio. The thermalization of these streams by shock formation is considered and the results are compared with the statics of MACETIE.
社団法人プラズマ・核融合学会の論文