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Journal articles on the topic 'Plasma edge theory'

Author: Grafiati

Published: 4 June 2021

Last updated: 7 February 2022

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1

Stangeby, P. C. "Plasma edge theory in fusion devices." Nuclear Fusion 32, no. 11 (1992): 2059–63. http://dx.doi.org/10.1088/0029-5515/32/11/424.

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2

Stacey, W. M. "Neoclassical theory of the plasma edge." Physics of Fluids B: Plasma Physics 5, no. 5 (1993): 1413–20. http://dx.doi.org/10.1063/1.860881.

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3

Stacey, W. M. "Recent Developments in Plasma Edge Theory." Contributions to Plasma Physics 56, no. 6-8 (2016): 495–503. http://dx.doi.org/10.1002/ctpp.201610060.

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4

Hooper, E. B., R. H. Cohen, and D. D. Ryutov. "Theory of edge plasma in a spheromak." Journal of Nuclear Materials 278, no. 1 (2000): 104–10. http://dx.doi.org/10.1016/s0022-3115(99)00217-2.

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5

Carreras, Benjamin A. "Plasma edge cross-field transport: experiment and theory." Journal of Nuclear Materials 337-339 (March 2005): 315–21. http://dx.doi.org/10.1016/j.jnucmat.2004.10.034.

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6

Donnelly, I. J., B. E. Clancy, and N. F. Cramer. "Alfvén wave heating of a cylindrical plasma using axisymmetric waves. Part 2. Kinetic theory." Journal of Plasma Physics 35, no. 1 (1986): 75–106. http://dx.doi.org/10.1017/s0022377800011144.

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Kinetic theory, including ion Larmor radius effects, is used to analyse the Alfvén wave heating of cylindrical plasmas using axisymmetric waves excited by an antenna at frequencies up to the ion cyclotron frequency. At the Alfvén resonance position, the compressional wave is mode converted to a quasi-electrostatic wave (QEW) which propagates towards the plasma centre or edge depending on whether the plasma is hot or warm. The energy absorbed by the plasma agrees with the MHD theory predictions provided the QEW is heavily damped before reaching the plasma centre or edge; if it is not, then QEW

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7

Stacey, W. M. "Extended fluid transport theory in the tokamak plasma edge." Nuclear Fusion 57, no. 6 (2017): 066034. http://dx.doi.org/10.1088/1741-4326/aa6b34.

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8

Rogister, A. L. "Revisited neoclassical transport theory for steep, collisional plasma edge profiles." Plasma Physics and Controlled Fusion 36, no. 7A (1994): A213—A217. http://dx.doi.org/10.1088/0741-3335/36/7a/030.

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9

Rogister, André. "Revisited neoclassical transport theory for steep, collisional plasma edge profiles." Physics of Plasmas 1, no. 3 (1994): 619–35. http://dx.doi.org/10.1063/1.870807.

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10

Mondt, J. P., and J. Weiland. "Two-fluid theory of thermal transport in current-carrying edge plasma." Physica Scripta 39, no. 1 (1989): 92–99. http://dx.doi.org/10.1088/0031-8949/39/1/014.

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11

Coster, D. P., R. Schneider, J. Neuhauser, B. Braams, and D. Reiter. "Theory and Modelling of Time Dependent Phenomena in the Plasma Edge." Contributions to Plasma Physics 36, no. 2-3 (1996): 150–60. http://dx.doi.org/10.1002/ctpp.2150360211.

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12

KRASHENINNIKOV, S. I., D. A. D'IPPOLITO, and J. R. MYRA. "Recent theoretical progress in understanding coherent structures in edge and SOL turbulence." Journal of Plasma Physics 74, no. 5 (2008): 679–717. http://dx.doi.org/10.1017/s0022377807006940.

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AbstractIn this paper we review some theoretical aspects of the dynamics of the mesoscale filaments extending along the magnetic field lines in the edge plasma, which are often called ‘blobs’. We start with a brief historical survey of experimental data and the main ideas on edge and SOL plasma transport, which finally evolved into the modern paradigm of convective very-intermittent cross-field edge plasma transport. We show that both extensive analytic treatments and numerical simulations demonstrate that plasma blobs with enhanced pressure can be convected coherently towards the wall. The me

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13

Mattor, Nathan, and Patrick H. Diamond. "Drift wave propagation as a source of plasma edge turbulence: Slab theory." Physics of Plasmas 1, no. 12 (1994): 4002–13. http://dx.doi.org/10.1063/1.870870.

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14

Mattor, Nathan. "Drift wave propagation as a source of plasma edge turbulence: Toroidal theory." Physics of Plasmas 2, no. 3 (1995): 766–76. http://dx.doi.org/10.1063/1.871429.

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15

LORTZ, D. "Stability of axisymmetric modes in plasma–vacuum equilibria." Journal of Plasma Physics 58, no. 4 (1997): 655–64. http://dx.doi.org/10.1017/s0022377897006181.

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A stability criterion for axisymmetric modes of ideal MHD equilibria without wall stabilization is derived for linear profiles with vanishing current density at the edge. Using perturbation theory, the critical half-axis ratio of the elliptical cross-section is computed for finite aspect ratio.

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16

Helander, P., and S. I. Krasheninnikov. "Transport theory in self-similar variables for neutrals atoms in an edge plasma." Contributions to Plasma Physics 36, no. 2-3 (1996): 344–48. http://dx.doi.org/10.1002/ctpp.2150360245.

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17

Stacey, W. M. "Necessary Extensions and Modification of Fluid Transport Theory for the Tokamak Plasma Edge." Fusion Science and Technology 74, no. 3 (2018): 198–210. http://dx.doi.org/10.1080/15361055.2017.1416250.

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18

Stacey, Weston M. "A Particle-, Momentum-, and Energy-Conserving Fluid Transport Theory for the Tokamak Plasma Edge." Fusion Science and Technology 75, no. 4 (2019): 251–63. http://dx.doi.org/10.1080/15361055.2019.1574529.

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19

Witalis, E. A. "Hall Effect, or Hyperbolic Magnetohydrodynamics, HMHD." Zeitschrift für Naturforschung A 42, no. 9 (1987): 917–21. http://dx.doi.org/10.1515/zna-1987-0902.

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The MHD theory of present magnetic fusion research is briefly reviewed with emphasis on its mathematically diffusive character. The importance of retaining the Hall effect term, neglected in ideal or resistive MHD theory, is stressed. Elliptic MHD theory is critically dismissed. The Hall effect, or Hyperbolic, MagnetoHydro-Dynamics, HMHD, is shown to follow as the consequence of a revision of plasma electrodynamics so as to account for the fundamental plasma quasineutrality. The non-validity of Newton’s third law in charged particle contexts is then central. Previously poorly understood phenom

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20

Stacey, W. M. "Corrigendum: Extended fluid transport theory in the tokamak plasma edge (2017 Nucl. Fusion 57 066034)." Nuclear Fusion 57, no. 11 (2017): 119501. http://dx.doi.org/10.1088/1741-4326/aa7e46.

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21

ONJUN, THAWATCHAI. "Pedestal temperature models based on first and second stability limits of ballooning modes." Laser and Particle Beams 24, no. 1 (2006): 113–16. http://dx.doi.org/10.1017/s0263034606060174.

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Models for the prediction of electron pedestal temperatures at the edge of type I ELMy H-mode plasmas are developed. These models are based on theory motivated concepts for pedestal width and pressure gradient. The pedestal pressure gradient is assumed to be limited by high n ballooning mode instabilities, where both the first and second stability limits are considered. The effect of the bootstrap current, which reduces the magnetic shear in the steep pressure gradient region at the edge of the H-mode plasma, can result in access to the second stability of ballooning mode. In these pedestal mo

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22

Benilov, M. S., and D. M. Thomas. "Asymptotic theory of double layer and shielding of electric field at the edge of illuminated plasma." Physics of Plasmas 21, no. 4 (2014): 043501. http://dx.doi.org/10.1063/1.4870013.

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23

Punjabi, Alkesh, and Min Soe†. "Bifurcations in an advanced two-chamber model for the edge plasma in a divertor tokamak." Journal of Plasma Physics 52, no. 3 (1994): 457–63. http://dx.doi.org/10.1017/s0022377800027252.

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An advanced two-chamber model for the main plasma scrape-off and the divertor chamber of a tokamak is constructed. It is studied in the framework of catastrophe theory. The model shows bifurcations in the topology of the equilibrium surfaces. The results are in qualitative agreement with some of the experimentally observed features of the H-mode transition.

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24

Ehlert, Christopher, Wolfgang E. S. Unger, and Peter Saalfrank. "C K-edge NEXAFS spectra of graphene with physical and chemical defects: a study based on density functional theory." Phys. Chem. Chem. Phys. 16, no. 27 (2014): 14083–95. http://dx.doi.org/10.1039/c4cp01106f.

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25

Rastovic, Danilo. "On L to H-mode transitions of the tokamak and entropy reduction." Nuclear Technology and Radiation Protection 21, no. 2 (2006): 14–20. http://dx.doi.org/10.2298/ntrp0602014r.

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In an ideal case, it is assumed that the models for tokamak and stellarator plasma behaviour lead to the theory of invariant manifolds by Rastovic [Chaos, Solitons & Fractals, 2007]. But, at the present state of knowledge a more realistic concept for describing L to H transitions and edge localized modes is the reduction of entropy and appropriate methods.

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26

Stacey, Weston M., and Brian A. Grierson. "Interpretation of rotation and momentum transport in the DIII-D edge plasma and comparison with neoclassical theory." Nuclear Fusion 54, no. 7 (2014): 073021. http://dx.doi.org/10.1088/0029-5515/54/7/073021.

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27

KAMRAN, M., S. KUHN, D. D. TSKHAKAYA, and M. KHAN. "Extended Tonks–Langmuir-type model with non-Boltzmann-distributed electrons and cold ion sources." Journal of Plasma Physics 79, no. 2 (2012): 169–87. http://dx.doi.org/10.1017/s0022377812000827.

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AbstractA general formalism for calculating the potential distribution Φ(z) in the quasineutral region of a new class of plane Tonks–Langmuir (TL)-type bounded-plasma-system (BPS) models differing from the well-known ‘classical’ TL model (Tonks, L. and Langmuir, I. 1929 A general theory of the plasma of an arc. Phys. Rev. 34, 876) by allowing for arbitrary (but still cold) ion sources and arbitrary electron distributions is developed. With individual particles usually undergoing microscopic collision/sink/source (CSS) events, extensive use is made here of the basic kinetic-theory concept of ‘C

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28

Chow, Weng W., and Hans Christian Schneider. "The Application of Gain Theory to Vertical-Cavity Surface-Emitting Lasers." MRS Bulletin 27, no. 7 (2002): 525–30. http://dx.doi.org/10.1557/mrs2002.171.

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AbstractThe development of vertical-cavity surface-emitting lasers (VCSELs) relies on an understanding of gain-medium physics, more so than in edge-emitting lasers. An important tool in the investigation of semiconductor gain behavior is a theory that provides a systematic account of the interaction between the laser field and the electron–hole plasma, the influence of the band structure, and the many-body effects due to Coulomb interactions among carriers. This article describes a semiclassical approach that is based on the semiconductor Bloch equations, with carrier correlation effects descr

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29

DU, DAN, XUEYU GONG, ZHENHUA WANG, JUN YU, and PINGWEI ZHENG. "Theoretical analysis of the ICRH antenna's impedance matching for ELMy plasmas on EAST." Journal of Plasma Physics 78, no. 6 (2012): 595–99. http://dx.doi.org/10.1017/s0022377812000396.

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AbstractA well-optimized design of an ion cyclotron resonance heating (ICRH) antenna is very important for steady-state plasma heating with high radio frequency (RF) power of several tens of megawatts. However, a sharp decrease in the coupling RF power because of impedance mismatch of ICRH system is an issue that must be resolved for present-day fusion reactors and International Thermonuclear Experimental Reactor. This paper has theoretically analyzed the ICRH antenna's impedance matching for ELMy plasmas on experimental advanced superconducting tokamak (EAST) by the transmission line theory.

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30

Krasheninnikov, Sergei. "17th International Workshop on Plasma Edge Theory in Fusion Devices, August 19-21, 2019, University California San Diego, La Jolla, USA." Contributions to Plasma Physics 60, no. 5-6 (2020): e202090016. http://dx.doi.org/10.1002/ctpp.202090016.

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31

Berczeli, Miklós, and Zoltán Weltsch. "Enhanced Wetting and Adhesive Properties by Atmospheric Pressure Plasma Surface Treatment Methods and Investigation Processes on the Influencing Parameters on HIPS Polymer." Polymers 13, no. 6 (2021): 901. http://dx.doi.org/10.3390/polym13060901.

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The development of bonding technology and coating technologies require the use of modern materials and topologies for the demanding effect and modification of their wetting properties. For the industry, a process modification process that can be integrated into a process is the atmospheric pressure of air operation plasma surface treatment. This can be classified and evaluated based on the wettability, which has a significant impact on the adhesive force. The aim is to improve the wetting properties and to find the relationship between plasma treatment parameters, wetting, and adhesion. High I

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32

Li, Jing, Tingting Quan, Wei Zhang, and Wei Deng. "The Dynamic Mutation Characteristics of Thermonuclear Reaction in Tokamak." Scientific World Journal 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/841891.

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The stability and bifurcations of multiple limit cycles for the physical model of thermonuclear reaction in Tokamak are investigated in this paper. The one-dimensional Ginzburg-Landau type perturbed diffusion equations for the density of the plasma and the radial electric field near the plasma edge in Tokamak are established. First, the equations are transformed to the average equations with the method of multiple scales and the average equations turn to be aZ2-symmetric perturbed polynomial Hamiltonian system of degree 5. Then, with the bifurcations theory and method of detection function, th

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33

Raghunathan, M., Y. Marandet, H. Bufferand, et al. "Generalized collisional fluid theory for multi-component, multi-temperature plasma using the linearized Boltzmann collision operator for scrape-off layer/edge applications." Plasma Physics and Controlled Fusion 63, no. 6 (2021): 064005. http://dx.doi.org/10.1088/1361-6587/abf670.

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34

Bimonte, Giuseppe, Benjamin Spreng, Paulo A. Maia Neto та ін. "Measurement of the Casimir Force between 0.2 and 8 μm: Experimental Procedures and Comparison with Theory". Universe 7, № 4 (2021): 93. http://dx.doi.org/10.3390/universe7040093.

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We present results on the determination of the differential Casimir force between an Au-coated sapphire sphere and the top and bottom of Au-coated deep silicon trenches performed by means of the micromechanical torsional oscillator in the range of separations from 0.2 to 8 μm. The random and systematic errors in the measured force signal are determined at the 95% confidence level and combined into the total experimental error. The role of surface roughness and edge effects is investigated and shown to be negligibly small. The distribution of patch potentials is characterized by Kelvin probe mi

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35

Prakash, R., R. P. Singh, R. C. Awasthi, and D. P. Singh. "A theoretical verification of intensity of plasmaspheric ELF hiss emissions: theory versus GEOS-1 observations." Annales Geophysicae 15, no. 6 (1997): 597–602. http://dx.doi.org/10.1007/s00585-997-0597-x.

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Abstract. An attempt is made to confirm the generation mechanism of plasmaspheric ELF hiss emissions observed aboard GEOS-1 satellite in the equatorial region both at small and large wave normal angles by calculating their magnetic field intensities in terms of incoherent Cerenkov radiation mechanism and cyclotron resonance instability mechanism, using appropriate and suitable plasma parameters. The ELF intensities calculated by Cerenkov radiation mechanism, being 4 to 5 orders of magnitude lower than the observed intensities, rule out the possibility of their generation by this mechanism. On

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36

Voigt, Gerd-Hannes. "Quasi-static MHD processes in Earth's magnetosphere." Laser and Particle Beams 6, no. 3 (1988): 525–37. http://dx.doi.org/10.1017/s0263034600005449.

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The purpose of this paper is to demonstrate how the MHD equilibrium theory can be used to describe the global magnetic field configuration of Earth's magnetosphere and its time evolution under the influence of magnetospheric convection. The MHD equilibrium theory represents magneto-hydrodynamics in the slow-flow approximation. In this approximation time scales are long compared to typical Alfvén wave travel times, and plasma flow velocities are small compared to the Alfvén speed. Under those conditions, the inertial term ρ(dv/dt) in the MHD equation of motion is a small second order term which

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37

Serpieri, Jacopo, Srikar Yadala Venkata, and Marios Kotsonis. "Conditioning of cross-flow instability modes using dielectric barrier discharge plasma actuators." Journal of Fluid Mechanics 833 (November 2, 2017): 164–205. http://dx.doi.org/10.1017/jfm.2017.707.

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In the current study, selective forcing of cross-flow instability modes evolving on a $45^{\circ }$ swept wing at $Re=2.17\times 10^{6}$ is achieved by means of spanwise-modulated plasma actuators, positioned near the leading edge. In the perspective of laminar flow control, the followed methodology holds on the discrete roughness elements/upstream flow deformation (DRE/UFD) approach, thoroughly investigated by e.g. Saric et al. (AIAA Paper 1998-781, 1998), Malik et al. (J. Fluid Mech., vol. 399, 1999, pp. 85–115) and Wassermann & Kloker (J. Fluid Mech., vol. 456, 2002, pp. 49–84). The pos

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38

Qin, H., R. H. Cohen, W. M. Nevins, and X. Q. Xu. "Geometric gyrokinetic theory for edge plasmas." Physics of Plasmas 14, no. 5 (2007): 056110. http://dx.doi.org/10.1063/1.2472596.

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39

Biermann, Peter L., Philipp P. Kronberg, Michael L. Allen, Athina Meli, and Eun-Suk Seo. "The Origin of the Most Energetic Galactic Cosmic Rays: Supernova Explosions into Massive Star Plasma Winds." Galaxies 7, no. 2 (2019): 48. http://dx.doi.org/10.3390/galaxies7020048.

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We propose that the high energy Cosmic Ray particles up to the upturn commonly called the ankle, from around the spectral turn-down commonly called the knee, mostly come from Blue Supergiant star explosions. At the upturn, i.e., the ankle, Cosmic Rays probably switch to another source class, most likely extragalactic sources. To show this we recently compiled a set of Radio Supernova data where we compute the magnetic field, shock speed and shock radius. This list included both Blue and Red Supergiant star explosions; both data show the same magnetic field strength for these two classes of sta

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40

Tsytovich, V. N., S. Benkadda, and S. V. Vladimirov. "Theory of self-organized dust sheaths in edge plasmas." Czechoslovak Journal of Physics 48, S2 (1998): 71–80. http://dx.doi.org/10.1007/s10582-998-0024-x.

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41

Mondt, J. P., and J. Liu. "Theory of thermal solitary vortices in current-carrying edge plasmas." Journal of Plasma Physics 36, no. 2 (1986): 235–42. http://dx.doi.org/10.1017/s0022377800011715.

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It is shown that the nonlinear dynamics of current-convective excitations in current-carrying edge plasmas allows for the existence of solitary vortices despite the effects of magnetic shear and dissipation in the form of parallel electron thermal conductivity. The potential importance of this finding with regard to heat balance is pointed out.

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42

WEILAND, JAN. "Nonlinear condensation modes." Journal of Plasma Physics 76, no. 3-4 (2010): 487–92. http://dx.doi.org/10.1017/s0022377809990778.

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AbstractIn the far edge, in L-mode plasmas and the outer parts of the H-mode barrier, tokamak plasmas may be so collisional that parallel electron motion can be neglected or included as a perturbation. Thus we have a regime that is basically two dimensional. We will here consider the outer part of the H-mode barrier where transport is small. Recently a condensation mode was found for this regime. We have extended the theory to the nonlinear regime.

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43

Marsch, E., and S. Bourouaine. "Velocity-space diffusion of solar wind protons in oblique waves and weak turbulence." Annales Geophysicae 29, no. 11 (2011): 2089–99. http://dx.doi.org/10.5194/angeo-29-2089-2011.

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Abstract. The fast solar wind is permeated by all kinds of plasma waves which have a broad range of wavelengths and occur on many different scales. Kinetically, a plasma wave induces ion-wave interactions which can within the quasi-linear theory be described as a diffusion process. The impact this diffusion may have on the shape of the proton velocity distribution function (VDF) is studied. We first analyse theoretically some of the possible kinetic effects of the waves on the ions. Then the model predictions are compared with the detailed in-situ plasma measurements made by the Helios spacecr

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44

Punjabi, Alkesh, and George Vahala. "Effects of positive potential in the catastrophe theory study of the point model for bumpy tori." Journal of Plasma Physics 33, no. 1 (1985): 119–49. http://dx.doi.org/10.1017/s0022377800002361.

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With positive ambipolar potential, ion non-resonant neoclassical transport leads to increased particle confinement times. In certain regimes of filling pressure, microwave powers (ECRH and ICRH) and positive potential, new folds can now emerge from previously degenerate equilibrium surfaces allowing for distinct C, T, and M modes of operation. A comparison in the equilibrium fold structure is also made between (i) equal particle and energy confinement times, and (ii) particle confinement times enhanced over the energy confinement time. The nonlinear time evolution of these point model equation

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45

"5th International Workshop on Plasma Edge Theory in Fusion Devices Proceeding." Contributions to Plasma Physics 36, no. 2-3 (1996): 95–96. http://dx.doi.org/10.1002/ctpp.2150360202.

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46

"16th International Workshop “Plasma Edge Theory in Fusion Devices” Marseille, France (September 27-29, 2017)." Contributions to Plasma Physics 58, no. 6-8 (2018): 430–33. http://dx.doi.org/10.1002/ctpp.201790040.

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47

Turnbull, A. D., J. M. Hanson, F. Turco, et al. "The external kink mode in diverted tokamaks." Journal of Plasma Physics 82, no. 3 (2016). http://dx.doi.org/10.1017/s0022377816000568.

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An explanation is provided for the disruptive instability in diverted tokamaks when the safety factor$q$at the 95 % poloidal flux surface,$q_{95}$, is driven below 2.0. The instability is a resistive kink counterpart to the current-driven ideal mode that traditionally explained the corresponding disruption in limited cross-sections (Shafranov,Sov. Phys. Tech. Phys., vol. 15, 1970, p. 175) when$q_{edge}$, the safety factor at the outermost closed flux surface, lies just below a rational value$m/n$. Experimentally, external kink modes are observed in limiter configurations as the current in a to

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48

Pétri, Jérôme. "Theory of pulsar magnetosphere and wind." Journal of Plasma Physics 82, no. 5 (2016). http://dx.doi.org/10.1017/s0022377816000763.

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Neutron stars are fascinating astrophysical objects immersed in strong gravitational and electromagnetic fields, at the edge of our current theories. These stars manifest themselves mostly as pulsars, emitting a timely very stable and regular electromagnetic signal. Even though discovered almost fifty years ago, they still remain mysterious compact stellar objects. In this review, we summarize the most fundamental theoretical aspects of neutron star magnetospheres and winds. The main competing models explaining their radiative properties like multi-wavelength pulse shapes and spectra and the u

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49

Kobayashi, T., H. Takahashi, K. Nagaoka, et al. "Isotope effects in self-organization of internal transport barrier and concomitant edge confinement degradation in steady-state LHD plasmas." Scientific Reports 9, no. 1 (2019). http://dx.doi.org/10.1038/s41598-019-52271-w.

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Abstract The isotope effect, which has been a long-standing mystery in the turbulent magnetically confined plasmas, is the phenomena that the plasma generated with heavier hydrogen isotope show a mitigated transport. This is on the contrary to what is predicted with the simple scaling theory, in which the heavier ions easily diffuse because of its larger gyro-radius. Thanks to the newly developed analysis method and a comprehensive parameter scan experiment in the steady-state plasmas in the Large Helical Device (LHD), the isotope effect was clearly observed in the self-organized internal tran

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50

Myra, J. R., D. A. D’Ippolito, D. A. Russell, M. V. Umansky, and D. A. Baver. "Analytical and numerical study of the transverse Kelvin–Helmholtz instability in tokamak edge plasmas." Journal of Plasma Physics 82, no. 2 (2016). http://dx.doi.org/10.1017/s0022377816000301.

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Sheared flows perpendicular to the magnetic field can be driven by the Reynolds stress or ion pressure gradient effects and can potentially influence the stability and turbulent saturation level of edge plasma modes. On the other hand, such flows are subject to the transverse Kelvin–Helmholtz (KH) instability. Here, the linear theory of KH instabilities is first addressed with an analytic model in the asymptotic limit of long wavelengths compared with the flow scale length. The analytic model treats sheared $\boldsymbol{E}\times \boldsymbol{B}$ flows, ion diamagnetism (including gyro-viscous t

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