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Showing 1 to 6 of 6 for “"ion gyroradius"”.
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Neoclassical polarization
… zonal flow is known to be the predominant saturation mechanism of plasma turbulence. Rosenbluth and Hinton(R-H) have shown that the zonal flow level is inversely proportional to the plasma radial polarizability due to magnetic drift departure from a flux surface. In another calculation, Hinton and …
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Nonlinear gyrokinetic simulations of intrinsic rotation in up-down asymmetric tokamaks
… that tokamak plasmas with strong toroidal rotation and rotation shear can suppress turbulent energy transport as well as allow violation of the Troyon [beta] limit. However, using external neutral beams to inject toroidal momentum, as is done in many current experiments, would require a …
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Turbulence and transport measurements in Alcator C-Mod and comparisons with Gyrokinetic simulations
… it is lost, and is therefore the main limitation of tokamak plasma performance. Dilution of the main-ion species was found to have a stabilizing effect on ion gyroradius scale turbulence in tokamak plasmas. Dilution of deuterium tokamak plasmas is the reduction of the ratio of the deuterium …
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Finite drift orbit effects in a tokamak pedestal
… Confinement Mode" or "H Mode" of tokamak operation. This region is characterized by a drastic plasma density drop over a relatively short radial distance, typically of order of the poloidal ion gyroradius (p,,). Experiments demonstrate that H Mode plasmas have superior transport properties …
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Multiscale numerical simulations of the magnetized plasma sheath with massively parallel electrostatic particle-in-cell code
… the plasma boundary and plasma-surface interactions is one of the key scientific challenges in fusion science and engineering. Large-scale integrated simulations and high-performance computing can provide valuable insights on the dynamic phenomena involved at the interface between the plasma and …
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One-Dimensional Kinetic Ion Model for the Start Up of a Field-Reversed Mirror
Made available in DSpace on 2017-07-06T18:48:19Z (GMT). No. of bitstreams: 3 Haill_Thomas_A_MS.pdf: 65264381 bytes, checksum: a2ee2c0eeb1b2e62904466dbeb07d652 (MD5) Haill_Thomas_A_MS_ABS.pdf: 686293 bytes, checksum: 06efeacd7aec7aff7a5350f94af53414 (MD5) license.txt: 4813 bytes, checksum: …