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pro vyhledávání: '"Hardman M"'
Electromagnetic microtearing modes (MTMs) have been observed in many different spherical tokamak regimes. Understanding how these and other electromagnetic modes nonlinearly saturate is likely critical in understanding the confinement of a high $\bet
Externí odkaz:
http://arxiv.org/abs/2409.08216
Autor:
Parisi, J. F., Berkery, J. W., Sladkomedova, A., Guizzo, S., Hardman, M. R., Ball, J. R., Nelson, A. O., Kaye, S. M., Anastopoulos-Tzanis, M., McNamara, S. A. M., Dominski, J., Janhunen, S., Romanelli, M., Dickinson, D., Diallo, A., Dnestrovskii, A., Guttenfelder, W., Hansen, C., Myatra, O., Wilson, H. R.
A new burn control scheme for tokamaks is described where the total fusion power is controlled by adjusting the plasma volume fraction that is packed into power dense regions. In an example spherical tokamak burning plasma, by modifying the plasma ed
Externí odkaz:
http://arxiv.org/abs/2404.04387
Autor:
Hardman, M. R., Parra, F. I., Patel, B. S., Roach, C. M., Ruiz, J. Ruiz, Barnes, M., Dickinson, D., Dorland, W., Parisi, J. F., St-Onge, D., Wilson, H.
In magnetic confinement fusion devices, the ratio of the plasma pressure to the magnetic field energy, $\beta$, can become sufficiently large that electromagnetic microinstabilities become unstable, driving turbulence that distorts or reconnects the
Externí odkaz:
http://arxiv.org/abs/2208.10615
Autor:
Parisi, J. F., Parra, F. I., Roach, C. M., Hardman, M. R., Schekochihin, A. A., Abel, I. G., Aiba, N., Ball, J., Barnes, M., Chapman-Oplopoiou, B., Dickinson, D., Dorland, W., Giroud, C., Hatch, D. R., Hillesheim, J. C., Ruiz, J. Ruiz, Saarelma, S., St-Onge, D.
Nonlinear multiscale gyrokinetic simulations of a Joint European Torus edge pedestal are used to show that electron-temperature-gradient (ETG) turbulence has a rich three-dimensional structure, varying strongly according to the local magnetic-field c
Externí odkaz:
http://arxiv.org/abs/2203.00831
Autor:
Hardman, M. R., Parra, F. I., Chong, C., Adkins, T., Anastopoulos-Tzanis, M. S., Barnes, M., Dickinson, D., Parisi, J. F., Wilson, H.
Ion-gyroradius-scale microinstabilities typically have a frequency comparable to the ion transit frequency. Due to the small electron-to-ion mass ratio and the large electron transit frequency, it is conventionally assumed that passing electrons resp
Externí odkaz:
http://arxiv.org/abs/2108.02822
Akademický článek
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Magnetised plasma turbulence can have a multiscale character: instabilities driven by mean temperature gradients drive turbulence at the disparate scales of the ion and the electron gyroradii. Simulations of multiscale turbulence, using equations val
Externí odkaz:
http://arxiv.org/abs/1911.04999
Multiple space and time scales arise in plasma turbulence in magnetic confinement fusion devices because of the smallness of the square root of the electron-to-ion mass ratio $(m_e/m_i)^{1/2}$ and the consequent disparity of the ion and electron ther
Externí odkaz:
http://arxiv.org/abs/1901.07062
Publikováno v:
Proceedings of the National Academy of Sciences of the United States of America, 2001 Nov 01. 98(23), 13031-13036.
Externí odkaz:
https://www.jstor.org/stable/3057035
Akademický článek
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