Abstract
The neutrals code DEGAS and the transport code SNAP were used to model recycling during steady state phases of Ohmic and neutral beam-heated discharges in TFTR. The flux of deuterium from the inner limiter is calculated to be 15--45 times the total D{sub {alpha}} emission rate, with {approx}2/3 of the deuterium flux resulting from D{sup +} flow in the scrape off to the limiter, and {approx}1/3 resulting from D{sup 0} scattering off the limiter. The total D{sup +} ionization rate in the core plasma is 6--24 times the total D{sub {alpha}} emission rate, and is larger than the total neutral beam fueling rate. The D{sub {alpha}} emission rate, limiter flux, and core ionization rates scale approximately as the square of the volume averaged electron density. 12 refs., 7 figs.
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