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Ionization and recombination coefficients for Fe XV--Fe XIX

Journal Article · · Phys. Rev. A; (United States)

During neutral-beam-heated, counter-injection discharges in the ISX-B tokamak, impurities tend to collect in the interior of the plasmas. In these circumstances iron ions preferentially accumulate with long confinement times in regions of almost constant electron temperature. The concentrations of intermediate stages of iron (Fe XV, XVI, XVIII, and XIX) have been studied under these conditions to investigate the ratios of recombination and ionization coefficients. The dielectronic recombination coefficients are then deduced by assuming that the ionization and the radiative and charge-exchange recombination rates can be calculated closely from theory.

Research Organization:
Fusion Energy Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37830
OSTI ID:
6510814
Journal Information:
Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 26:4; ISSN PLRAA
Country of Publication:
United States
Language:
English