Results 61 to 70 of about 3,538 (193)

Non-thermal processes in coronae and beyond [PDF]

, 2012
This contribution summarizes the splinter session "Non-thermal processes in coronae and beyond" held at the Cool Stars 17 workshop in Barcelona in 2012.
Beiersdorfer, Bryans, Carter, Carter, Dennerl, Foster, Fuhrmeister, Güdel, Güdel, Hudson, Kowalski, Landi, Miceli, Neupert, Smith, Townsley, Townsley, Wolk   +17 more
core   +1 more source

Energy transport analysis of NSTX plasmas with the TGLF turbulent and NEO neoclassical transport models

Nuclear Fusion, 2023
This work presents a study of plasma transport at low aspect ratio on the National Spherical Torus Experiment tokamak, where the turbulent and neoclassical energy fluxes calculated by the quasilinear Trapped Gyro Landau Fluid (TGLF) model and the multi ...
G. Avdeeva, K.E. Thome, S.P. Smith, D.J. Battaglia, C.F. Clauser, W. Guttenfelder, S.M. Kaye, J. McClenaghan, O. Meneghini, T. Odstrcil, G. Staebler   +10 more
doaj   +1 more source

Electron temperature gradient instability and transport analysis in NSTX and NSTX-U plasmas

Physics of Plasmas
Extensive linear and nonlinear simulations to study electron temperature gradient (ETG) stability and thermal transport in National Spherical Torus Experiment (NSTX) and NSTX-U plasmas were performed using the fully electromagnetic gyrokinetic code CGYRO.
C. F. Clauser, T. Rafiq, J. Parisi, G. Avdeeva, W. Guttenfelder, E. Schuster, C. Wilson   +6 more
openaire   +1 more source

Kinetic-ballooning-limited pedestals in spherical tokamak plasmas

Nuclear Fusion
A theoretical model is presented that for the first time matches experimental measurements of the pedestal width-height Diallo scaling in the low-aspect-ratio high- β tokamak NSTX.
J.F. Parisi, W. Guttenfelder, A.O. Nelson, R. Gaur, A. Kleiner, M. Lampert, G. Avdeeva, J.W. Berkery, C. Clauser, M. Curie, A. Diallo, W. Dorland, S.M. Kaye, J. McClenaghan, F.I. Parra   +14 more
doaj   +1 more source

Kinetic neoclassical calculations of impurity radiation profiles

Nuclear Materials and Energy, 2017
Modifications of the drift-kinetic transport code XGC0 to include the transport, ionization, and recombination of individual charge states, as well as the associated radiation, are described.
D.P. Stotler, D.J. Battaglia, R. Hager, K. Kim, T. Koskela, G. Park, M.L. Reinke   +6 more
doaj   +1 more source

ECRH/EBWH SYSTEM FOR NSTX-

, 2012
The National Spherical Torus Experiment Upgrade (NSTX-U) will operate at an axial toroidal field of up to 1 T, about twice the field available on NSTX. A 28 GHz electron cylotron resonance heating (ECRH) system is currently being planned for NSTX-U. A 1 MW 28 GHz gyrotron will be employed.
Taylor, G., Ellis, R. A., Harvey, R. W., Hosea, J. C., Smirnov, A. P.   +4 more
openaire   +2 more sources

Evidences for and the models of self-similar skeletal structures in fusion devices, severe weather phenomena and space [PDF]

, 2005
The paper briefly reviews (i) the evidences for self-similar structures of a skeletal form (namely, tubules and cartwheels, and their simplest combinations), called the Universal Skeletal Structures (USS), observed in the range 10-5 cm - 1023 cm.
Kukushkin, A. B., Rantsev-Kartinov, V. A.   +1 more
core   +1 more source

Students’ experience of cultural differences between mathematics and physics

Physical Review Physics Education Research
How students use mathematics in their physics classes has been studied extensively in the physics education literature. In addition to specific mathematical methods in specific physics contexts, possible effects of more general “cultural” differences ...
Jeffrey M. Rabin, Andrew Meyertholen, Brian Shotwell   +2 more
doaj   +1 more source

Development of slow and fast wave coupling and heating from the C-Stellarator to NSTX

EPJ Web of Conferences, 2017
A historical perspective on key discoveries which contributed to understanding the properties of coupling both slow and fast waves and the effects on plasma heating and current drive will be presented.
Hosea Joel
doaj   +1 more source

Tokamak Simulation Code modeling of NSTX [PDF]

, 2000
The Tokamak Simulation Code [TSC] is widely used for the design of new axisymmetric toroidal experiments. In particular, TSC was used extensively in the design of the National Spherical Torus eXperiment [NSTX]. The authors have now benchmarked TSC with initial NSTX results and find excellent agreement for plasma and vessel currents and magnetic flux ...
Jardin, S. C., Kaye, S., Menard, J., Kessel, C., Glasser, A. H.   +4 more
openaire   +2 more sources