Results 11 to 20 of about 24,681,778 (305)

Dynamics of L-H transition and I-phase in EAST [PDF]

Nuclear Fusion, 2014
The turbulence and flows at the plasma edge during the L-I-H, L-I-L and single-step L-H transitions have been measured directly using two reciprocating Langmuir probe systems at the outer midplane with several newly designed probe arrays in the EAST ...
Wan, B., Liu, AD, Yan, Ning, Li, Y., Hu, G., Gong, XZ, Chen, R., Juul Rasmussen, J., Wu, X. Q., Xu, M, Wu, XQ, Guo, HY, Kong, D. F., Wang, HQ, Shao, LM, Xu, G. S., Naulin, V, Ding, S. Y., Zhao, HL, Rasmussen, J Juul, Manz, P., Gong, X. Z., Li, YL, Liu, S., Zhao, N, Wu, X., Shao, L. M., Chen, L., Gong, X., Liu, SC, Guo, H. Y., Yan, N, Xu, M., Zhao, H., Tynan, G. R., Nielsen, AH, Lan, T., Wang, H. Q., Guo, H., Miki, K., Wang, H., Chen, R, Ding, SY, Zhang, W., Hu, G. H., Diamond, P., Tynan, GR, Wang, L., Nielsen, Anders Henry, Manz, P, Chen, L, Xu, GS, Chen, Leifeng, Wang, L, Wan, B. N., Kong, D., Hu, GH, Juul Rasmussen, Jens, Wan, BN, Zhang, W, Li, Y. L., Tynan, G., Yan, N., Zhao, H. L., Liu, Y., Diamond, PH, Liu, A. D., Nielsen, A., Liu, Y. L., Liu, A., Naulin, V., Kong, DF, Liu, YL, Diamond, P. H., Xu, G., Liu, S. C., Zhao, N., Shao, L., Miki, K, Naulin, Volker, Ding, S., Lan, T   +81 more
core   +5 more sources

Theory of the L-H transition

, 1994
The theory of the L-H transition in tokamaks is discussed. A transport bifurcation model is presented, which predicts reasonably well several properties of the L-H transition in the DIII-D tokamak, including the evolution in time of the density and ...
Hinton, F. L.
core   +3 more sources

Dynamic behavior of the L-H transition

Physical Review Letters, 1994
Dynamic behavior of the L-H transition / H. Zohm ... - In: Physical review letters. 72. 1994. S.
Zohm, Hartmut, Zohm, H.
core   +4 more sources

Recent progress in L–H transition studies at JET : tritium, helium, hydrogen and deuterium [PDF]

, 2022
We present an overview of results from a series of L–H transition experiments undertaken at JET since the installation of the ITER-like-wall (JET-ILW), with beryllium wall tiles and a tungsten divertor.
Solano, E.R., JET Contributors, Ben Yaala, M.   +2 more
core   +2 more sources

L-H transition in tokamaks and stellarators [PDF]

Plasma Physics and Controlled Fusion, 1994
H-mode theory is extended to include realistic effects such as charge-exchange momentum loss associated with neutral particles, and the magnetic stresses induced by the magnetic islands. Local critical plasma parameters for the on-set of the bifurcation are obtained and can be compared quantatively with experimental measurements.
Shaing, K. C., Hsu, C. T., Christenson, P. J.   +2 more
openaire   +1 more source

Dynamics of stimulated L → H transitions [PDF]

Physics of Plasmas, 2013
We report on model studies of stimulated L → H transitions [K. Miki et al., Phys. Rev. Lett. 110, 195002 (2013)]. These studies use a reduced mesoscale model. Model studies reveal that L → H transition can be triggered by particle injection into a subcritical state (i.e., P<PThresh). Particle injection changes edge mean flow shear via changes of
Miki, K, Diamond, PH, Hahn, S-H, Xiao, WW, Gürcan, ÖD, Tynan, GR   +5 more
openaire   +3 more sources

L–H transition threshold studies in helium plasmas at JET

Nuclear Fusion, 2021
We present a study of the power threshold for L–H transitions (PLH) in almost pure helium plasmas, obtained in recent experiments at JET with an ITER-like wall (Be wall and W divertor). The most notable new result is that the density at which PLH is minimum, ${\bar{n}}_{\text{e},\mathrm{min}}$, is considerably higher for helium than for deuterium and ...
E.R. Solano, G. Birkenmeier, E. Delabie, C. Silva, J.C. Hillesheim, A. Boboc, I.S. Carvalho, P. Carvalho, M. Chernyshova, T. Craciunescu, E. de la Luna, J.M. Fontdecaba, R. Henriques, P. Jacquet, I. Jepu, A. Kappatou, D. King, M. Lennholm, E. Lerche, E. Litherland-Smith, A. Loarte, M. Maslov, F. Parra Diaz, V. Parail, E. Pawelec, F.G. Rimini, A. Shaw, P. Siren, G. Szepesi, Ž. Štancar, E. Tholerus, S. Vartanian, B. Viola, H. Weisen, null JET Contributors   +34 more
openaire   +2 more sources

L–H transition and pedestal studies on MAST

Nuclear Fusion, 2011
On MAST studies of the profile evolution of the electron temperature (Te), electron density (ne), radial electric field (Er) as well as novel measurements of the ion temperature (Ti) and toroidal current density (j) in the pedestal region allow further insight into the processes forming and defining the pedestal such as the H-mode access conditions and
Meyer, H, De Bock, M F M, Conway, N J, Freethy, S, Gibson, K J, Hiratsuka, J., Kirk, A., Michael, Clive, Morgan, T., Scannell, R, Naylor, G, Saarelma, S., Saveliev, A, Shevchenko, V, Suttrop, W., Temple, D., Vann, R G L, MAST Team, The   +17 more
openaire   +4 more sources

L-H transition studies in tritium and deuterium–tritium campaigns at JET with Be wall and W divertor

Nuclear Fusion, 2023
The recent deuterium–tritium campaign in JET-ILW (DTE2) has provided a unique opportunity to study the isotope dependence of the L-H power threshold in an ITER-like wall environment (Be wall and W divertor).
E.R. Solano, G. Birkenmeier, C. Silva, E. Delabie, J.C. Hillesheim, A. Baciero, I. Balboa, M. Baruzzo, A. Boboc, M. Brix, J. Bernardo, C. Bourdelle, I.S. Carvalho, P. Carvalho, C.D. Challis, M. Chernyshova, A. Chomiczewska, R. Coelho, I. Coffey, T. Craciunescu, E. de la Cal, E. de la Luna, R. Dumont, P. Dumortier, M. Fontana, J.M. Fontdecaba, L. Frassinetti, D. Gallart, J. Garcia, C. Giroud, W. Gromelski, R.B. Henriques, J. Hall, A. Ho, L.D. Horton, L. Horvath, P. Jacquet, I. Jepu, E. Joffrin, A. Kappatou, D.L. Keeling, D.B. King, V.G. Kiptily, K.K. Kirov, D. Kos, E. Kowalska-Strzęciwilk, M. Lennholm, E. Lerche, E. Litherland-Smith, A. Loarte, B. Lomanowski, P.J. Lomas, C.F. Maggi, J. Mailloux, M.J. Mantsinen, M. Maslov, A.G. Meigs, I. Monakhov, R.B. Morales, A.H. Nielsen, D. Nina, C. Noble, E. Pawelec, M. Poradzinski, G. Pucella, P. Puglia, D. Réfy, J. Juul Rasmussen, E. Righi, F.G. Rimini, T. Robinson, M. Sertoli, S.A. Silburn, G. Sips, P. Sirén, Ž. Štancar, H.J. Sun, G. Szepesi, D. Taylor, E. Tholerus, B. Thomas, G. Verdoolaege, P. Vincenzi, B. Viola, N. Vianello, T. Wilson, JET Contributors   +86 more
doaj   +1 more source

Changing of Electrical Conductivity, Acidity Function Voltage of Potential Difference for Salicylic Acid and Substituted to Study Adsorption Mechanism on Alumina Surface and the Factors Affecting it [PDF]

مجلة جامعة الانبار للعلوم الصرفة, 2020
In this study and for the first time there are the use of the specific electrical conductivity, acidity function, difference potential for salicylic and acetyl salicylic acids (Aspirin) solution before and after adsorption to describe and elicit ...
Khaleel Al-Niemi
doaj   +1 more source