Results 1 to 10 of about 9,692 (235)

Impurity-seeded plasma experiments on JET [PDF]

Nuclear Fusion, 2002
Scaling to larger tokamaks of high confinement plasmas with radiating edges, induced by impurities, is being studied through internationally collaborative experiments on JET. In campaigns till the end of 2000, three different regimes have been explored. A small number of limiter L-mode discharges seeded with neon have most closely repeated the approach
G. Maddison, M. Brix, R. Budny, M. Charlet, I. Coffey, J.G. Cordey, P. Dumortier, S.K. Erents, N. Hawkes, M. von Hellermann, D. L. Hillis, J. Hogan, L. D. Horton, L. C. Ingesson, S. Jachmich, G.L. Jackson, A. Kallenbach, H. R. Koslowski, K. Lawson, A. Loarte, G.F. Matthews, D. C. McDonald, G. R. McKee, A. Meigs, A. Messiaen, F. Milani, P. Monier-Garbet, M. Murakami, M. F. F. Nave, J. Ongena, M.E. Puiatti, E. Rachlew, J. Rapp, S. E. Sharapov, G. M. Staebler, M. Stamp, J. Strachan, W. Suttrop, G. Telesca, M. Z. Tokaŕ, B. Unterberg, M. Valisa, K.-D. Zastrow, Efda-Jet Contributors   +43 more
  +8 more sources

Nonlinear edge-localized mode with impurity seeding in CFETR hybrid scenario [PDF]

Nuclear Fusion
A critical challenge for operating fusion burning plasma in high-confinement mode lies in mitigating damage caused by edge-localized modes (ELMs).
Shiyong Zeng, Ping Zhu
doaj   +2 more sources

The radiated power limit in impurity seeded JET-ILW plasmas

Nuclear Materials and Energy, 2022
The total radiated fraction is examined in high density H-mode plasmas (Greenwald fraction of about 85 %) in JET by the variation of the auxiliary heating power of Pheat = 14 MW-29 MW.
A. Huber, M. Wischmeier, S. Wiesen, M. Bernert, A.V. Chankin, S. Aleiferis, S. Brezinsek, V. Huber, G. Sergienko, C. Giroud, M. Groth, S. Jachmich, Ch. Linsmeier, B. Lomanowski, C. Lowry, G.F. Matthews, A.G. Meigs, Ph. Mertens, S. Silburn, G. Telesca   +19 more
doaj   +2 more sources

Predictive modelling of impurity seeded plasmas in JET [PDF]

Plasma Physics and Controlled Fusion, 2002
Seeding of impurities into JET resulted in a pronounced modification of plasma confinement properties. In order to analyse the underlying mechanisms a predictive transport modelling has been performed by means of two approaches. (i) The Chalmers advanced fluid model for temperature gradient driven instabilities is applied to determine all transport ...
M. Z. Tokaŕ, H. Nordman, J. Weiland, J. Ongena, V. Parail, B. Unterberg, contributors to the EFDA-JET Workprogramme   +6 more
  +6 more sources

The impact of impurity peaking factor on ion temperature promotion in EAST argon-seeded plasmas

Nuclear Fusion
This study investigates the impact of impurity peaking factor ( PF ) on turbulence and ion temperature ( T _i ) in Experimental Advanced Superconducting Tokamak (EAST) argon-seeded plasmas.
K. Jia, Z. Xu, Z.W. Wu, W. Gao, M.R. Wang, K.D. Li, A. Ti, X.H. Wu, Z. Zhou, H.L. Zhao, Y.F. Jin, Y.C. Li, Z.C. Lin, L.Q. Xu, K.B. Nan, J. Huang, the EAST Team   +16 more
doaj   +2 more sources

EMC3-EIRENE simulations of edge plasma and impurity transport by toroidally localized argon seeding on CFETR X-divertor

Nuclear Fusion
The three-dimensional (3D) edge Monte Carlo transport code EMC3-EIRENE has been employed to study edge plasma and impurity transport with toroidally localized argon seeding using the Chinese fusion engineering testing reactor (CFETR) X-divertor ...
T. Xie, H. Li, W. Zhang, R. Ding, L. Wang, Y. Luo, D.Z. Wang   +6 more
doaj   +2 more sources

Impurities in alfalfa seed and their impact on processing technology

Journal on Processing and Energy in Agriculture, 2012
The aim of this research was to determine relevant parameters and optimal alfalfa seed processing technology by a comparative analysis of two systems of machinery for processing natural alfalfa seed of different purity (59.0% and 71.0%) and with different content of impurities. The relevant parameters monitored during the test were: pure seed (%), weed
Đokić Dragoslav, Stanisavljević Rade, Jordan Marković, Dragan Terzić, Anđelković Bojan   +4 more
openalex   +4 more sources

Effects of divertor geometry on detachment and core plasma performance with impurity seeding in EAST

Nuclear Fusion
Divertor detachment operation compatible with the core plasma is an effective method to alleviate the steady-state heat flux approaching the divertor target; this scheme will be adopted by high-performance tokamaks in the future, such as International ...
L.Y. Meng, L. Wang, J.B. Liu, K.D. Li, X. Lin, X.J. Liu, G.Z. Jia, J. Guo, T. He, L. Yu, P.J. Tang, J.C. Xu, W.M. Zhang, L. Zhang, J.J. Yang, Y.M. Duan, F.B. Zhong, T. Zhang, M.R. Wang, Z.C. Lin, T.Q. Jia, B. Zhang, Q. Zang, Y.W. Yu, Z.X. Chen, G.S. Xu, B.N. Wan   +26 more
doaj   +2 more sources

Mechanism of central temperature peaking in impurity seeded plasmas [PDF]

Plasma Physics and Controlled Fusion, 2003
Formation of a centrally peaked profile of the ion temperature by impurity seeding has been observed in all the largest tokamaks: JET, JT-60U, TFTR. A possible explanation of this phenomenon is proposed, which takes into account the suppression of ion temperature gradient instability induced anomalous transport through increasing ion effective charge ...
M. Z. Tokaŕ
openalex   +4 more sources

Impurity radiation seeding of neoclassical tearing mode growth

Nuclear Fusion
The physics of neoclassical tearing modes (NTMs) is of great concern to tokamak plasma stability and performance, especially in the burning plasma regime.
Shiyong Zeng, Ping Zhu, Eric C. Howell
doaj   +3 more sources