Monte Carlo Studies of Ion Cyclotron Heating in Tokamaks

Gagey, B.; Lapierre, Y.; Marty, D.

doi:10.1016/b978-1-4832-8428-6.50045-x

Cited by 1 publication

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“…Second harmonic heating was considered for deuterium by Krapchev [20], and for fully ionized neon ions by Longinov et al [8]. It should also be pointed out here that Monte Carlo calculations [19,21] have indicated that both minority protons and impurity ions, gaining energy discontinuously in the resonance layer, can be accelerated up to the 100 keV energy range. The impurity calculations were performed for He-like Ar 16+ ions (because of the pump-out experiment [5]), but they are of general validity; depending on the particular experimental conditions, the accelerated particles can either transfer their energy to the plasma or can be lost by trajectory effects.…”

Section: Transfer Of the Energy Absorbed By Vanadium Ionsmentioning

confidence: 99%

Influence of partially stripped impurity ions on the cyclotron absorption of the fast magnetosonic wave in TFR plasmas

1986

Nucl. Fusion

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Injection of vanadium ions by the laser blowoff technique has permitted the impurity content in TFR plasmas to be modified purposely before ion cyclotron resonance (ICR) heating experiments in the mode conversion regime. The initial rate of increase in the central deuteron temperature T D (0) has thus been enhanced. By solving the wave propagation equation in the WKB approximation, it has been possible to account for the enhanced dT D (0)/dt value by wave energy deposition on resonating V 21+ ions, provided a fraction (of the order of 10%) of these ions has been accelerated to the tens of keV range. Previous experimental ICR heating results, in conditions such that the proton cyclotron layer is outside the limiter radius, can be explained by similar resonance processes on intrinsic metal impurity ions.

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Section: Transfer Of the Energy Absorbed By Vanadium Ionsmentioning

confidence: 99%

Influence of partially stripped impurity ions on the cyclotron absorption of the fast magnetosonic wave in TFR plasmas

1986

Nucl. Fusion

View full text Add to dashboard Cite

show abstract

Monte Carlo Studies of Ion Cyclotron Heating in Tokamaks

Cited by 1 publication

References 2 publications

Influence of partially stripped impurity ions on the cyclotron absorption of the fast magnetosonic wave in TFR plasmas

Influence of partially stripped impurity ions on the cyclotron absorption of the fast magnetosonic wave in TFR plasmas

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