Results 31 to 40 of about 56,208 (298)

Controlling Tokamak Geometry with 3D Magnetic Perturbations

, 2014
It is shown that small externally applied magnetic perturbations can significantly alter important geometric properties of magnetic flux surfaces in tokamaks.
Bird, Thomas M, Hegna, Chris C
core   +1 more source

Comparison between resistive and collisionless double tearing modes for nearby resonant surfaces [PDF]

, 2006
The linear instability and nonlinear dynamics of collisional (resistive) and collisionless (due to electron inertia) double tearing modes (DTMs) are compared with the use of a reduced cylindrical model of a tokamak plasma. We focus on cases where two q =
A Bierwage, Connor J W, Coppi B, Coppi B, Goldston R J, Günter S, Kikuchi M, Mahajan S M, Nishikawa K, Q Yu, Wesson J A, White R B Monticello D A Rosenbluth M N Waddell B V, Wolf R C, Yu Q   +13 more
core   +3 more sources

Precision microwave dielectric and magnetic susceptibility measurements of correlated electronic materials using superconducting cavities

, 2000
We analyze microwave cavity perturbation methods, and show that the technique is an excellent, precision method to study the dynamic magnetic and dielectric response in the $GHz$ frequency range.
A. Revcolevschi, A. Vietkine, C. Kusko, Jacobs T., Müller J., N. Hakim, Revcolevschi A., S. Sridhar, Z. Zhai, Zhai Z.   +9 more
core   +1 more source

Edge turbulence transport during ELM suppression with n = 4 resonant magnetic perturbation on EAST

Nuclear Fusion, 2023
The edge turbulence characteristics and the induced radial transport have been investigated in edge localized mode (ELM) suppression by using the $n = $ 4 resonant magnetic perturbation coils on EAST, with ${q_{95}} = $ 3.6 and the electron ...
S.C. Liu, Y. Liang, L.T. Li, T.F. Tang, X.H. Wu, N. Yan, T.H. Shi, G.S. Li, K.X. Ye, L.Y. Meng, R. Ding, Y. Sun, M. Jia, Q. Ma, Q. Zang, X. Li, S.X. Wang, M.R. Wang, H.L. Zhao, J.L. Wei, T. Zhang, Y.F. Jin, L. Liao, W.Y. Wei, Y. Li, R. Chen, G.H. Hu, N. Zhao, X.J. Liu, T.F. Ming, X. Han, W.B. Zhang, L. Wang, J.P. Qian, L. Zeng, G.Q. Li, G.S. Xu, X.Z. Gong, X. Gao, the EAST Team   +39 more
doaj   +1 more source

Influence of rotating resonant magnetic perturbations on particle confinement [PDF]

Nuclear Fusion, 2014
The effect of resonant magnetic perturbations (RMPs) on particle confinement is studied in J-TEXT tokamak by using externally applied rotating RMPs. It is found that RMPs cause improved (degraded) particle confinement when its frequency is higher (lower) than the natural m/n = 2/1 tearing mode frequency, and the amount of change in electron density is ...
Hu, Q., Yu, Q., Wang, N., Shi, P., Yi, B., Ding, Y., Rao, B., Chen, Z., Gao, L., Hu, X., Jin, H., Li, M., Li, J., Yu, K., Zhuang, G.   +14 more
openaire   +2 more sources

Measurement of Resonant Frequency and Quality Factor of Microwave Resonators: Comparison of Methods

, 1998
Precise microwave measurements of sample conductivity, dielectric, and magnetic properties are routinely performed with cavity perturbation measurements.
Aitken J. E., Ashley J. R., Leong K., Miura T., Paul J. Petersan, Sanchez M. C., Steven M. Anlage   +6 more
core   +1 more source

Nonlinear theory of resonant slow waves in anisotropic and dispersive plasmas [PDF]

, 2008
The solar corona is a typical example of a plasma with strongly anisotropic transport processes. The main dissipative mechanisms in the solar corona acting on slow magnetoacoustic waves are the anisotropic thermal conductivity and viscosity [Ballai et al.
Braginskii S. I., Christopher T. M. Clack, Erdélyi R., Istvan Ballai, Nayfeh A. H., Ruderman M. S., Ruderman M. S., Spitzer L., Tirry W. J.   +8 more
core   +2 more sources

Glymphatic Dysfunction Reflects Post‐Concussion Symptoms: Changes Within 1 Month and After 3 Months

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Mild traumatic brain injury (mTBI) may alter glymphatic function; however, its progression and variability remain obscure. This study examined glymphatic function following mTBI within 1 month and after 3 months post‐injury to determine whether variations in glymphatic function are associated with post‐traumatic symptom severity ...
Eunkyung Kim, Han Gil Seo, Roh‐Eul Yoo, Byung‐Mo Oh   +3 more
wiley   +1 more source

Anderson-Yuval approach to the multichannel Kondo problem

, 1994
We analyze the structure of the perturbation expansion of the general multichannel Kondo model with channel anisotropic exchange couplings and in the presence of an external magnetic field, generalizing to this case the Anderson-Yuval technique.
A. Muramatsu, A. Zawadowski, A.M. Sengupta, A.M. Tsvelik, A.M. Tsvelik, Alexander O. Gogolin, B. Andraka, C.L. Seaman, D. Sacramento, D.C. Ralph, D.C. Ralph, D.G. Clarke, D.L. Cox, D.L. Cox, G. Toulouse, G. Yuval, G. Zaránd, I. Affleck, K.G. Wilson, M. Fabrizio, M. Fabrizio, N. Andrei, N. Andrei, N.I. Muskhelishvili, P. Nozières, P. Nozières, P. Nozières, P. Schlottmann, P.B. Wiegmann, P.B. Wiegmann, P.W. Anderson, Ph. Nozières, T. Giamarchi, V.J. Emery, V.J. Emery   +34 more
core   +1 more source

Control of stochasticity in magnetic field lines [PDF]

, 2005
We present a method of control which is able to create barriers to magnetic field line diffusion by a small modification of the magnetic perturbation. This method of control is based on a localized control of chaos in Hamiltonian systems.
Chandre, Cristel, Ciraolo, Guido, Ghendrih, Philippe, Lima, Ricardo, Vittot, Michel   +4 more
core   +6 more sources