The current I to a cylindrical probe at rest in an unmagnetized plasma, with probe bias highly positive, is determined. The way I lags behind the orbital-motion-limited (OML) current, as the radius R exceeds the maximum radius for the OML regime to hold, is of interest for space-tether applications. The ratio is roughly a decreasing function of which is independent of bias, with the electron Debye length and roughly an increasing function of the temperature ratio, The dependence of current on ion energy is used to discuss the effect of probe motion through the plasma, a case applying to tethers in low orbit.
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