In order to describe a steady state of a thermonuclear cylindrical plasma in the D-3He fusion reactor, the two-component theory is used. The spatial dependence of the plasma temperature, the number density, the plasma pressure and the strength of the magnetic field are obtained.
It is found that there are two optimum frequencies for the RF confinement. The lower frequency is confirmed to be a series resonance by observing the frequency shift caused by the externally added condenser. The second frequency, which is not changed by the condenser, corresponds to the parallel resonance due to the plasma resonance. The confinement is more effective at the, parallel resonance. The impedance measured can be well explained by the circuit theory including the cold plasma.
A simple model for a implosion dynamics of pinch plasma is proposed.It is assumed that the plasma behaves magnetohydro dynamically and shock waves are generated by the pinch forces and the model is formulated by using magneto-hydrodynamic conservation laws, shock jump conditions and pressure balance condition. The maximum pinch time is calculated with the model and the radius, the density and the temperature of the plasma at that time are obtained. It is found that their results are in good agreements with those obtained in the typical θ-pinch experiments of Scylla I-B and Scyna IV.Thus, the simple model may be useful for the analyses of gross behaviour in the implosion phase of pinch plasma.
A magnetohydrodynamic model in a implosion phase of pinch plasma, which was reported in the previous papar, is expanded to the case in the presence of a bias magetic field. The influence of the bias magnetic field on the pinch plasma is discussed by using the model.
Three methods for measurements of spatial distribution of small phase angle by optical rotatory or by double refraction are proposed. In order to embed fringe patterns beforehand, a rotatory wedge, a double refraction wedge and a rotational polarizer are used. Deformation of the embedded fringe patterns is used for measurements of small phase angle by test elements.