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Isotope dependence ...
Isotope dependence of the type I ELMy H-mode pedestal in JET-ILW hydrogen and deuterium plasmas
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- Horvath, L. (author)
- Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.;Univ York, York Plasma Inst, Dept Phys, York YO10 5DD, N Yorkshire, England.
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- Maggi, C. F. (author)
- Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.
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- Chankin, A. (author)
- Max Planck Inst Plasma Phys, Boltzmannstr 2, D-85748 Garching, Germany.
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- Saarelma, S. (author)
- Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.
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- Field, A. R. (author)
- Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.
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- Aleiferis, S. (author)
- NCSR Demokritos, Inst Nucl & Radiol Sci & Technol, Energy & Safety, Athens 15310, Greece.
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- Belonohy, E. (author)
- Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.
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- Boboc, A. (author)
- Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.
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- Corrigan, G. (author)
- Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.
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- Delabie, E. G. (author)
- Oak Ridge Natl Lab, Oak Ridge, TN USA.
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- Flanagan, J. (author)
- Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.
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- Frassinetti, Lorenzo (author)
- KTH,Fusionsplasmafysik
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- Giroud, C. (author)
- Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.
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- Harting, D. (author)
- Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.
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- Keeling, D. (author)
- Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.
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- King, D. (author)
- Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.
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- Maslov, M. (author)
- Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.
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- Matthews, G. F. (author)
- Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.
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- Menmuir, S. (author)
- Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.
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- Silburn, S. A. (author)
- Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.
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- Simpson, J. (author)
- Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England.;Aalto Univ, Espoo 02150, Finland.
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- Sips, A. C. C. (author)
- Culham Sci Ctr, JET Exploitat Unit, Abingdon OX14 3DB, Oxon, England.;European Commiss, Brussels, Belgium.
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- Weisen, H. (author)
- Ecole Polytech Fed Lausanne, Swiss Plasma Ctr, Lausanne, Switzerland.
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- Gibson, K. J. (author)
- Univ York, York Plasma Inst, Dept Phys, York YO10 5DD, N Yorkshire, England.
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Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England;Univ York, York Plasma Inst, Dept Phys, York YO10 5DD, N Yorkshire, England. Culham Sci Ctr, CCFE, Abingdon OX14 3DB, Oxon, England. (creator_code:org_t)
- 2021-03-09
- 2021
- English.
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In: Nuclear Fusion. - : IOP Publishing. - 0029-5515 .- 1741-4326. ; 61:4
- Related links:
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https://infoscience....
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Subject headings
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- The pedestal structure, edge transport and linear MHD stability have been analyzed in a series of JET with the ITER-like wall hydrogen (H) and deuterium (D) type I ELMy H-mode plasmas. The pedestal pressure is typically higher in D than in H at the same input power and gas rate, with the difference mainly due to lower density in H than in D (Maggi et al (JET Contributors) 2018 Plasma Phys. Control. Fusion 60 014045). A power balance analysis of the pedestal has shown that higher inter-ELM separatrix loss power is required in H than in D to maintain a similar pedestal top pressure. This is qualitatively consistent with a set of interpretative EDGE2D-EIRENE simulations for H and D plasmas, showing that higher edge particle and heat transport coefficients are needed in H than in D to match the experimental profiles. It has also been concluded that the difference in neutral penetration between H and D leads only to minor changes in the upstream density profiles and with trends opposite to experimental observations. This implies that neutral penetration has a minor role in setting the difference between H and D pedestals, but higher ELM and/or inter-ELM transport are likely to be the main players. The interpretative EDGE2D-EIRENE simulations, with simultaneous upstream and outer divertor target profile constraints, have indicated higher separatrix electron temperature in H than in D for a pair of discharges at low fueling gas rate and similar stored energy (which required higher input power in H than in D at the same gas rate). The isotope dependence of linear MHD pedestal stability has been found to be small, but if a higher separatrix temperature is considered in H than in D, this could lead to destabilization of peeling-ballooning modes and shrinking of the stability boundary, qualitatively consistent with the reduced pedestal confinement in H.
Subject headings
- NATURVETENSKAP -- Fysik -- Fusion, plasma och rymdfysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Fusion, Plasma and Space Physics (hsv//eng)
Keyword
- tokamak
- isotope effect
- H-mode
- pedestal
- confinement
- JET-ILW
Publication and Content Type
- ref (subject category)
- art (subject category)
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To the university's database
- By the author/editor
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Horvath, L.
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Maggi, C. F.
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Chankin, A.
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Saarelma, S.
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Field, A. R.
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Aleiferis, S.
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show more...
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Belonohy, E.
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Boboc, A.
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Corrigan, G.
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Delabie, E. G.
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Flanagan, J.
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Frassinetti, Lor ...
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Giroud, C.
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Harting, D.
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Keeling, D.
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King, D.
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Maslov, M.
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Matthews, G. F.
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Menmuir, S.
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Silburn, S. A.
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Simpson, J.
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Sips, A. C. C.
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Weisen, H.
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Gibson, K. J.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Fusion Plasma an ...
- Articles in the publication
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Nuclear Fusion
- By the university
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Royal Institute of Technology