Measurements of Plasma Flows in a Divertor Simulation

December 3, 1990

J. Nucl. Mater., 176-177, 746-749 (1990).

Zonca, F., Cohen, S. A., Cuthbertson, J., Timberlake, J., Ruzic, D. N.

The importance of plasma momentum fluxes in fusion reactor divertor operation is noted. Direct measurements have been made of the momentum flux from magnetized He, Ne, Ar and Kr plasmas onto solid carbon targets oriented normal to the magnetic field, as the target bias was varied between − 50 and + 40 volts. The inferred ion energies are compared with fluid sheath theory. Corrections due to kinetic effects and charge exchange are considered.