Now showing items 1-12 of 12

    • Calculation of toroidal rotation profiles in DIII-D using neoclassical viscosity (DoE Grant ER54538) 

      Stacey, Weston M.; Johnson, R. W.; Mandrekas, John (Georgia Institute of TechnologyAmerican Institute of Physics, 2005-10)
      Momentum and particle balance and neoclassical viscosity were applied to calculate the radial profile of toroidal rotation in several DIII-D [J. Luxon, Nucl. Fusion, 42, 614 (2002)] discharges in a variety of energy ...
    • Evolution of the H-mode edge pedestal between ELMs 

      Stacey, Weston M.; Groebner, Richard J. (Georgia Institute of TechnologyAmerican Institute of Physics, 2010-08)
      The evolution of edge pedestal parameters between edge-localized modes (ELMs) is analyzed for an H-mode DIII-D [J Luxon, Nucl. Fusion 42, 612 (2002)] discharge. Experimental data are averaged over the same sub-intervals ...
    • Higher Order Approximations of the TEP Method for Neutral Particle Transport in Edge Plasmas 

      Stacey, Weston M.; Zhang, Dingkang; Mandrekas, John (Georgia Institute of TechnologyAmerican Institute of Physics, 2006)
      Higher order approximations, which take into account the effects of angular anisotropy, spatial non-uniformity and energy dependence of the distribution of neutral particles, have been developed and implemented to extend ...
    • Improvements in the 2D TEP Neutral Particle Transport Calculation in Edge Plasmas (DoE Grant ER54538) 

      Zhang, Dingkang; Mandrekas, John; Stacey, Weston M. (Georgia Institute of TechnologyWiley-VCH Verlag GmbH and Co. KGaA, 2005-10)
      Extensions of the 2D Transmission and Escape Probability neutral particle transport method in treating the spatial non-uniformity of collision sources and neutral energy effects are presented. These extensions have been ...
    • Investigation of edge pedestal structure in DIII-D (DoE Grant ER54538) 

      Stacey, Weston M.; Groebner, Richard J. (Georgia Institute of TechnologyAmerican Institute of Physics, 2005-10)
      A calculation based on the requirements of particle, momentum and energy conservation, conductive heat transport and atomic physics resulting from a recycling and fueling neutral influx was employed to investigate the ...
    • A neoclassical calculation of toroidal rotation profiles and comparison with DIII-D measurements 

      Stacey, Weston M.; Johnson, R. W.; Mandrekas, John (Georgia Institute of TechnologyAmerican Institute of Physics, 2006)
      Momentum and particle balance and neoclassical viscosity were applied to calculate the radial profile of toroidal rotation velocity in several DIII-D [J. Luxon, Nucl. Fusion, 42, 614 (2002)] discharges in a variety of ...
    • Non-Diffusive Transport in the Tokamak Edge Pedestal 

      Stacey, Weston M.; Groebner, Richard J.; Evans, T. E. (Georgia Institute of TechnologyInstitute of Physics, 2012)
      There are (at least) two classical mechanisms for non-diffusive transport in the edge plasma: i) particle “pinch” velocities due to forces such as VxB, and Er; and ii) outward drifts due to ion-orbit loss and X-transport. ...
    • Nuclear Mission for Fusion (Transmutation, fissle breeding and Pu dispostion) 

      Stacey, Weston M. (Georgia Institute of TechnologyElsevier, 2006)
      There are potential applications of fusion neutron sources to 'drive' sub-critical fission reactors to perform one or more possible 'nuclear' missions. Since only a fraction of the neutrons in these applications would be ...
    • Rotation velocities and radial electric field in the plasma edge 

      Stacey, Weston M. (Georgia Institute of TechnologyWiley-VCH Verlag GmbH and Co. KGaA, 2005-10)
      The toroidal and poloidal rotation and related radial electric field observed in the edge (and core) of tokamak plasmas are of interest for several reasons, not least of which is what they reveal about radial momentum ...
    • A sub-critical, He-cooled, fast reactor for the transmutation of spent nuclear fuel (DOE Grant ER54350) 

      Stacey, Weston M. (Georgia Institute of TechnologyAmerican Nuclear Society, 2005-10)
      A design concept and supporting analysis are presented for a He-cooled, fast reactor for the transmutation of spent nuclear fuel. Coated TRU fuel particles in a SiC matrix are used. The reactor operates sub-critical (k ...
    • Thermal Transport in the DIII-D Edge Pedestal 

      Stacey, Weston M.; Groebner, Richard J. (Georgia Institute of TechnologyAmerican Institute of Physics, 2006)
      A new procedure for inferring χ[subscript i,e] in the plasma edge from experimental data and integrated modeling code calculations has been developed which takes into account atomic physics and radiation effects and ...
    • Transmutation missions for fusion neutron sources 

      Stacey, Weston M. (Georgia Institute of TechnologyElsevier, 2005)
      There are a number of potential neutron transmutation missions (destruction of long-lived radioisotopes in spent nuclear fuel, ‘disposal’ of surplus weapons grade plutonium, ‘breeding’ of fissile nuclear fuel) that perhaps ...