Academic Background
 

Research Interests



  • astrophysical plasma physics: stellar physics, magnetohydrodynamic turbulence, MHD convection
  • high-energy astrophysics: cosmic rays and turbulence
  • turbulence: closure theory, Lagrangian statisics
  • fusion: MHD stability, magnetic reconnection (tearing mode stability), trapped particle stability, energetic particles, tokamaks, tandem mirrors
  • computational plasma physics: pseudo-spectral methods, finite element methods, finite volume methods, massively-parallel high-performance computing, visualization of large data-sets


Education



  • 2009 Ph.D. Physics, University of Texas at Austin, Institute for Fusion Studies, Austin, Texas, USA
  • 2004 M.A. Applied and Computational Mathematics, Princeton, Princeton, New Jersey, USA
  • 2001 B.S. Mathematics with distinction, Harvey Mudd College, Claremont, California, USA

Professional Experience




Selected Recent Presentations of Note:




  1. J. Pratt. ``Magnetic Islands under the influence of heating and current" (invited talk) UKMHD Meeting 2017 at the University of Durham, 20 April 2017. https://doi.org/10.6084/m9.figshare.4906460.v1
  2. J. Pratt, et al. ``MHD modeling of solar wind turbulence and convection in sunspots" AstroChat Astrophysics Seminar at the University of Glasgow, 5 November 2015.
  3. J. Pratt, A. Busse, W.-C. Mueller. ``Lagrangian statistics of heat transfer in homogeneous hydrodynamic turbulence driven by Boussinesq convection" UK Turbulence Consortium Annual Meeting. 3-4 September 2015.
  4. J. Pratt and E. Westerhof. ``Current evolution during suppression of tearing modes with ECCD." (invited talk) JOREK General Meeting. Garching, Germany, 27 May 2015. https://dx.doi.org/10.6084/m9.figshare.2750659.v1
  5. J. Pratt. ``Time-implicit compressible simulations of deep convection in a young sun." Astrophysics Seminar, Georg-August-Universität Göttingen, Germany, 5 Feb 2015.
  6. J. Pratt, et al. ``Fluctuation dynamo amplified by intermittent shear bursts." (invited talk) Dynamics Days Europe, Mini-symposium on Nonlinear Problems in Plasma Astrophysics, 8-12 September 2014, Bayreuth, Germany https://dx.doi.org/10.6084/m9.figshare.2749897.v1
  7. J. Pratt, E. Westerhof. ``Tutorial: Incorporating kinetic aspects of RF current drive in MHD simulation with a focus on ECCD stabilization of tearing modes." (invited talk) Lorentz Workshop: Modeling Kinetic Aspects of Global MHD Modes, Leiden, Netherlands, Dec 4 2013. https://dx.doi.org/10.6084/m9.figshare.2750392.v1
  8. J. Pratt, E. Westerhof. ``Simulation of suppression of neoclassical tearing modes with ECCD." (contributed talk) 54th APS Division of Plasma Physics, November 1, 2012, Providence, Rhode Island.
  9. J. Pratt, W. -C. Müller. ``The Role of Magnetic Structures in Dynamo Action." (contributed talk) 53rd APS Division of Plasma Physics, 17 Nov 2011, Salt Lake City, Utah.
  10. J. Pratt, W.-C. Müller. ``Solar Dynamo Action: Lagrangian statistics and other characteristics of 3D MHD convection." (invited talk) Institute for Fusion Studies VIP Seminar. University of Texas at Austin, Dec. 2010.
  11. J. Pratt, W. Horton, H.L. Berk ``GAMMA-10 Simulation Results and Implications for a Tandem Mirror Effort." (invited talk) Fusion Power Associates Symposium, Lawrence Livermore National Laboratory. December 3-4, 2008.