Theoretical astrophysics and plasma physics at RPC

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Repeated Bursts from Relativistic Scattering of Compact Objects in Galactic Nuclei

(2011)

Authors:

Bence Kocsis, Janna Levin
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Critically balanced ion temperature gradient turbulence in fusion plasmas

Physical Review Letters 107:11 (2011)

Authors:

M Barnes, FI Parra, AA Schekochihin

Abstract:

Scaling laws for ion temperature gradient driven turbulence in magnetized toroidal plasmas are derived and compared with direct numerical simulations. Predicted dependences of turbulence fluctuation amplitudes, spatial scales, and resulting heat fluxes on temperature gradient and magnetic field line pitch are found to agree with numerical results in both the driving and inertial ranges. Evidence is provided to support the critical balance conjecture that parallel streaming and nonlinear perpendicular decorrelation times are comparable at all spatial scales, leading to a scaling relationship between parallel and perpendicular spatial scales. This indicates that even strongly magnetized plasma turbulence is intrinsically three dimensional. © 2011 American Physical Society.
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Protoplanets with core masses below the critical mass fill in their Roche lobe

(2011)

Authors:

Caroline Terquem, Tobias Heinemann
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Overview of physics results from MAST

Nuclear Fusion IOP Publishing 51:9 (2011) 094013

Authors:

B Lloyd, RJ Akers, F Alladio, S Allan, LC Appel, M Barnes, NC Barratt, N Ben Ayed, BN Breizman, M Cecconello, CD Challis, IT Chapman, D Ciric, G Colyer, JW Connor, NJ Conway, M Cox, SC Cowley, G Cunningham, A Darke, M De Bock, E Delchambre, G De Temmerman, RO Dendy, P Denner, MD Driscoll, B Dudson, D Dunai, M Dunstan, S Elmore, AR Field, G Fishpool, S Freethy, L Garzotti, KJ Gibson, MP Gryaznevich, W Guttenfelder, J Harrison, RJ Hastie, NC Hawkes, TC Hender, B Hnat, DF Howell, M-D Hua, A Hubbard, G Huysmans, D Keeling, YC Kim, A Kirk, Y Liang, MK Lilley, M Lisak, S Lisgo, YQ Liu, GP Maddison, R Maingi, SJ Manhood, R Martin, GJ McArdle, J McCone, H Meyer, C Michael, S Mordijck, T Morgan, AW Morris, DG Muir, E Nardon, G Naylor, MR O'Brien, T O'Gorman, J Páleník, A Patel, SD Pinches, MN Price, CM Roach, V Rozhansky, S Saarelma, SA Sabbagh, A Saveliev, R Scannell, SE Sharapov, V Shevchenko, S Shibaev, D Stork, J Storrs, W Suttrop, A Sykes, P Tamain, D Taylor, D Temple, N Thomas-Davies, A Thornton, MR Turnyanskiy, M Valovic, RGL Vann, G Voss, MJ Walsh, SEV Warder, HR Wilson, M Windridge, M Wisse, S Zoletnik
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Overview of toroidal momentum transport

Nuclear Fusion 51:9 (2011)

Authors:

AG Peeters, C Angioni, A Bortolon, Y Camenen, FJ Casson, B Duval, L Fiederspiel, WA Hornsby, Y Idomura, T Hein, N Kluy, P Mantica, FI Parra, AP Snodin, G Szepesi, D Strintzi, T Tala, G Tardini, P De Vries, J Weiland

Abstract:

Toroidal momentum transport mechanisms are reviewed and put in a broader perspective. The generation of a finite momentum flux is closely related to the breaking of symmetry (parity) along the field. The symmetry argument allows for the systematic identification of possible transport mechanisms. Those that appear to lowest order in the normalized Larmor radius (the diagonal part, Coriolis pinch, E × B shearing, particle flux, and up-down asymmetric equilibria) are reasonably well understood. At higher order, expected to be of importance in the plasma edge, the theory is still under development. © 2011 IAEA, Vienna.
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