Eric Held

Associate Professor

Research Interests:

Telephone #: (435) 797-7166
E-mail address:

Research Description

Dr. Held's major goal as a theoretical plasma physicist is to contribute to the realization of controlled magnetic fusion in a terrestrial reactor and to further understanding of astrophysical and lab plasmas. This includes analytic and numerical work to enhance plasma fluid models by incorporating generalized closure relations. These closures, which have been implemented in the plasma fluid code NIMROD, have led to the first numerical simulations of electron kinetic physics on resistive, magnetohydrodynamic time scales. Dr. Held invites promising physics and math students to consider joining his group at Utah State to pursue a PhD in theoretical plasma physics. Competitive RA stipends and first-rate academic and research experiences await qualified students. Please email


Code for interpolation:

Theoretical Methods in Physics II: Physics 5350

Code for interpolation: local.f90, shell_drive_interp.f90, shell_drive_spline.f90, shell_interp_procs.f90.

Code for integration: shell_drive_int.f90, shell_int_procs.f90.

Code for integration of ODEs: shell_ode_drive.f90, shell_ode_int.f90.

Code for elliptic PDEs: ellip_solvers_students, ellip_drive.f90.

Statistical Mechanics: Physics 6410 >


"Nonlocal Closures for Plasma Fluid Simulations," E. D. Held, J. D. Callen, C. C. Hegna, C. R. Sovinec, T. A. Gianakon, and S. E. Kruger, to appear in Physics of Plasmas, 2004.

"Unified Form for Parallel Ion Viscous Stress in Magnetized Plasmas," E. D. Held, Physics of Plasmas, 10 (4708) 2003.

"Conductive Electron Heat Flow along an Inhomogeneous Magnetic Field," E. D. Held, J. D. Callen, and C. C. Hegna, Physics of Plasmas, 10 (3933) 2003.

"NIMROD: A Computational Laboratory for Studying Nonlinear Magnetohydrodynamics," C. R. Sovinec, T. A. Gianakon, E. D. Held, S. E. Kruger, and D. D. Schnack, Physics of Plasmas, 10 (1727) 2003.

"Conductive Electron Heat Flow along Magnetic Field Lines," E. D. Held, J. D. Callen, C. C. Hegna and C. R. Sovinec, Physics of Plasmas, 8 (1171) 2001.

"MHD Calculations with a Nonmonotonic q Profile and Equilibrium, Sheared Toroidal Flow," E. D. Held, J. N. Leboeuf and B. A. Carreras, Physics of Plasmas, 6 (837) 1999.

Intermediate Mechanics: Physics 3550

Homework Assignments

Homework 1: 1.1, 1.4, 1.19, 1.23, 1.25, 1.26, 1.30, 1.34

Homework 2: 2.3, 2.9, 2.39, 2.55, 3.5, 3.17, 3.19, 3.21, 3.25, 3.33, 3.34,

4.8, 4.16, 4.23, 4.24, 4.36, 4.46