Ionization and Recombination Rates for HighlyIonized Titanium Ions from Time-Resolved Spectroscopy of Tokamak Plasmas

The effective ionization and recombination rate coefficients for Ti xvii–xx were obtained by studying the modulation of line emission by sawtooth oscillations in the TEXT tokamak at the University of Texas. Experimental data are matched with the simulation of titanium-ion emission by a one-dimensional (1D) transport code which includes ionization and recombination processes.