Observations of Turbulent Resistivity at High Drift Velocities

Resistivity and electron heating are measured for a hydrogen plasma in a toroidal magnetic field subjected to a parallel electric field at least 100 times the runaway value and lasting up to 400ωₚᵢ^-1: Nearly constant in time, and scaling as E1/2, the resistivity reaches values near 2(m/M)1/3ωₚₑ^-1. Particle analyzer data reveal heating rates up to 100 keV/{μ}s and indicate the presence of multiple electron beams at higher applied fields.