2003
DOI: 10.1088/0741-3335/45/9/304
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ELM particle and energy transport in the SOL and divertor of DIII-D

Abstract: Results from a series of dedicated experiments measuring the effect of particle and energy pulses from Type-I Edge Localized Modes (ELMs) in the DIII-D scrape-off layer (SOL) and divertor are compared with a simple model of ELM propagation in the boundary plasma. The simple model asserts that the propagation of ELM particle and energy perturbations is dominated by ion parallel convection along SOL field lines and the recovery from the ELM perturbation is determined by recycling physics. Time scales associated … Show more

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Cited by 61 publications
(97 citation statements)
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References 77 publications
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“…The flow of particles to the divertor target takes place on a different time scale, dominated by the ion transport, which governs the convection of energy from the main plasma to the divertor target. This separation of timescales and mechanisms for energy transport has been confirmed experimentally in several divertor tokamak experiments [172,199,166,163,171]. An example of such timescale separation is shown in Fig.…”
Section: Mechanism Of Type I Elm Energy Transport To Pfcssupporting
confidence: 67%
See 3 more Smart Citations
“…The flow of particles to the divertor target takes place on a different time scale, dominated by the ion transport, which governs the convection of energy from the main plasma to the divertor target. This separation of timescales and mechanisms for energy transport has been confirmed experimentally in several divertor tokamak experiments [172,199,166,163,171]. An example of such timescale separation is shown in Fig.…”
Section: Mechanism Of Type I Elm Energy Transport To Pfcssupporting
confidence: 67%
“…This physics picture has been further documented by ELM-resolved Langmuir probe measurements in various divertor tokamaks [170,2,171,163] and by measurements of the soft X-ray emission from the JET divertor target [172], which can resolve the different response and timescales for the impact of hot electrons and ions at the divertor target.…”
Section: Use Of Extrinsic Impurity Radiation To Reduce Divertor Heat mentioning
confidence: 90%
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“…This paper presents analysis of plasmas in which resonant magnetic perturbations ͑RMPs͒ in the plasma edge in DIII-D not only reduce the size of, but can completely suppress the largest Type-I ELMs, 6,7 exceeding reduction requirements for future devices. The RMPs are generated by currents in external perturbation coils.…”
Section: Introductionmentioning
confidence: 99%