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The pressure increase and total thermal conductivity are calculated for an infinitely long hydrogen plasma column in an axial magnetic field. The calculations, which are based on the first and third moments of the Boltzmann equations for atoms, ions and electrons, are carried out under the assumption of local thermal equilibrium. Numerical results are given for magnetic fields up to 150 kG, temperatures to 10 6 °K and external pressures ranging from 10 3  to 10 5  dyne/cm 2 . Comparison of these results with previous calculations, which neglect thermal forces, shows that they cause an increase of pressure also in the completely ionized plasma and therefore modify the thermal conductivity indirectly.

Druckerhöhung und Wärmeleitfähigkeit in einem zylindersymmetrischen Wasserstoffplasma im axialen Magnetfeld unter Berücksichtigung von Thermokräften