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John M. Finn

John Finn

Capabilities

  • Accelerators and Electrodynamics
  • Plasma physics
  • Computational Physics and Applied Mathematics
  • Algorithms
  • Jacobi-Free Newton Krylov Methods
  • Applied Math
  • Mesh generation
  • Earth and Space Sciences
  • Solar and heliospheric physics
  • High Energy Density Plasmas and Fluids
  • Magnetohydrodynamic phenomena
  • Space and astrophysical plasmas
  • Plasma theory
  • Magnetic reconnection

Expertise

Plasma theory - Magnetic fusion modeling: tokamaks, reversed field pinches, spheromaks, field reversed configurations; magnetohydrodynamics of laboratory plasmas, stability, control, energetic particle effects and nonlinear behavior.

Magnetohydrodynamics of solar and astrophysical plasmas - Magnetic reconnection and dynamo

Dynamical systems theory applied to plasma physics and fluid dynamics - Self-consistent effects of chaotic advection and chaotic magnetic field lines in fluids and plasmas

Computational methods - Symplectic and variational integrators, adaptive grid and time stepping

Education

Ph.D. Physics, University of Maryland 1974

M.S. Mathematics, University of Houston 1971

B.S. Physics, Georgia Institute of Technology 1969

 

LANL Positions

Technical staff member,  T-5, Applied Mathematics and Plasma Physics, Dec 2008-present

Acting group leader, T-15, Plasma Theory Sept 2006-May 2007

Technical staff member,  T-15, Plasma Theory – June 1993-Dec 2008

 

Professional Societies

Fellow of the American Physical Society, 1988

Chairman of Human Rights Committee of the APS Division of Plasma Physics, 1992-1994

Chair of Executive Committee, International Sherwood Fusion Theory
Conference (1995-1996)

Vice Chair, APS Nicholson Medal Committee (APS, 1996)

Chair, APS Nicholson Medal Committee (APS, 1997)

Divisional Associate Editor, Physical Review Letters, Jan 2001 - Jan 2005

 

Publications

“Control of magnetohydrodynamic modes in reversed field pinches with normal and tangential magnetic field sensing and two resistive walls”, K. Sassenberg, D. Brennan, A. S. Richardson, and J. M. Finn, Plasma Physics and Controlled Fusion 55, 084002 (2013).

“An arbitrary curvilinear coordinate method for particle-in-cell modeling”, C. A. Fichtl, J. M. Finn, and K. L. Cartwright, Computational Science & Discovery 5, 014011 (2012).

“Symplectic integrators with adaptive time steps”, A. S. Richardson and J. M. Finn, Plasma Physics and Controlled Fusion 54, 014004 (2012).

“Quasi-separatrix layers and reconnection diagnostics for line-tied tearing modes”, A. S. Richardson and J. M. Finn, Communications in Nonlinear Science and Numerical Simulations 17, p.2132- 2143 (2012).

“High magnetic shear gain in a liquid Sodium stable Couette flow experiment”, S. A. Colgate, H. Li, V. Pariev, J. M. Finn, H. Beckley, J. Si, J.Martinic, D.Westpfahl, J. Slutz, C.Westrom, B. Klein, P. Schendel, C. Scharle, T. McKinney, R. Ginanni, I. Bentley, T. Mickey, Phys. Rev. Letters 106, 175003 (2011).

“The fluid-dynamic approach to equidistribution methods for grid generation and adaptation”, G. L. Delzanno and J. M. Finn, Computer Physics Communications 182 pp. 330-346 (2011).

“Robust, multidimensional mesh motion based on Monge-Kantorovich equidistribution”, L. Chacón, G. L. Delzanno, and J. M. Finn, Journal of Computational Physics 230, pp. 87-103 (2011).

“Control of ideal and resistive magnetohydrodynamic modes in reversed field pinches with a resistive wall”, A. S. Richardson, J. M. Finn, and G. L. Delzanno, Phys. Plasmas 17, 112511 (2010). l

“The effect of plasma flow on line-tied magnetohydrodynamic modes”, F. Arcudi, G. L. Delzanno, and J. M. Finn, Phys. Plasmas 17, 062106 (2010).

“Generalized Monge-Kantorovich optimization for grid generation and adaptation in Lp”, G. L. Delzanno and J. M. Finn, SIAM Journal of Scientific Computing 32, pp. 3524-3547 (2010).

“An optimal robust equidistribution method for two-dimensional grid generation based on Monge-Kantorovich optimization,” G. L. Delzanno, L. Chacón, J. M. Finn, Y. Chung, and G. Lapenta, J. Comp. Phys. 227, 9841 (2008).

“The effect of line-tying on tearing modes,” G. L. Delzanno and J. M. Finn, Phys. Plasmas 15, 032904 (2008).

“Electrostatic mode associated with the pinch velocity in reversed field pinch simulations”, G. L. Delzanno, L. Chacón, and J. M. Finn, Phys. Plasmas 15, 122102 (2008).

“Regression with strongly correlated data”, C. S. Jones, J. M. Finn, and N. Hengartner, J. Multivariate Analysis 99, 2136-2153 (2008).

“A magnetic alpha-omega dynamo in AGN disks. II. Magnetic field generation, theories and simulations”, V. I. Pariev, S. A. Colgate, and J. M. Finn, Astrophys. J. Letters 658, 129 (2007).

“Resistive effects on line-tied magnetohydrodynamic modes in cylindrical geometry”, G. L. Delzanno, E. G. Evstatiev, and J. M. Finn, Phys. Plasmas 14, 092901 (2007).

“Line-tied kink modes in cylindrical equilibria with magnetic shear”, G. L. Delzanno, E. G. Evstatiev, and J. M. Finn, Phys. Plasmas, 14, 072902 (2007).

“The role of resistivity on line-tied modes in cylindrical geometry”, G. L. Delzanno, E. G. Evstatiev, and J. M. Finn, Phys. Plasmas (Letters) 14, 070702 (2007).

“Magnetic reconnection: null point”, J. M. Finn, Nature Physics 2, 445 (2006).

“Control of magnetohydrodynamic modes with a resistive wall above the wall stabilization limit”, J. M. Finn, Phys. Plasmas 13, 82504 (2006).

“A new method for analyzing line-tied kink modes in cylindrical geometry”, E. Evstatiev, G. L. Delzanno and J. M. Finn, Phys. Plasmas 13, 072902 (2006).

“Modeling the large scale structures of astrophysical jets in the magnetically dominated limit”, H. Li, G. Lapenta, J. M. Finn, S. Li and S. A. Colgate, Astrophys. J. 643, 92 (2006).

“MHD equilibrium reconstruction in the presence of correlated data”, C. S. Jones and J. M. Finn, Nuclear Fusion 46, 335 (2006).

“Noise-stabilized random attractor”, J. M. Finn, E. R. Tracy, W. E. Cooke, and A. S. Richardson, Phys. Rev. E 73 (2006), 26220-1-12.

“Hyper-resistivity due to viscous tearing mode turbulence”, J. M. Finn, Phys. Plasmas 12, 092313 (2005).

“Volume preserving integrator for solenoidal fields on a grid”, J. M. Finn and L. Chacón, Phys. Plasmas 12, p.54503-1-4 (2005).

“Control of resistive wall modes in a cylindrical tokamak with radial and poloidal magnetic field sensors”, J. M. Finn, Phys. Plasmas 11, 4361 (2004).

“Similarity solutions for magnetic bubble expansion”, J. M. Finn, G. Lapenta, and H. Li, Phys. Plasmas 11, 2082 (2004).

“Control of linear and nonlinear resistive wall modes”, J. M. Finn and L. Chacón, Phys. Plasmas 11, 1866 (2004).

“Estimation of entropies and dimensions by nonlinear symbolic time series analysis”, J. M. Finn, J. Goettee, Z. Toroczkai, M. Anghel, and B. Wood, CHAOS 13, 444 (2003).

“Hall MHD Effects in the 2-D Kelvin-Helmholtz/Tearing Instability”, L. Chacón, D. A. Knoll, and J. M. Finn, Physics Letters A 308, 187 (2003).

"Implicit, Jacobian-free Newton- Krylov 2D reduced MHD nonlinear solver", L. Chacon, D. A. Knoll, and J. M. Finn, J. Comp. Phys 178, 15 (2002).

“Nonlinear Phase of the Compressional m=1 Diocotron Instability: Saturation and Analogy with Geophysical Fluid Dynamics”, G. L. Delzanno, J. M. Finn, and G. Lapenta, Phys. Plasmas 9, 5059 (2002).

“Stability analysis of hollow electron columns including compression and thermal effects: integrability condition and numerical simulations”, G. L. Delzanno, V. I. Pariev, J. M. Finn, and G. Lapenta, Phys. Plasmas 9, 4863 (2002).

“KANDINSKI: a PIC code for fluid simulations of Penning traps”, G. L. Delzanno, G. Lapenta, and J. M. Finn, IEEE Trans Plasma Sci. 30, 34 (Feb. 2002).

“The effect of Lagrangian chaos on locking bifurcations in shear flows”, J. Finn, CHAOS 12, 508 (2002).

"Equilibrium and low-frequency stability of a uniform density, collisionless, spherical Vlasov system", D. C. Barnes, L. Chacón, and J. M. Finn, Phys. Plasmas 9, 4448 (2002).

"Implicit, Jacobian-free Newton-Krylov 2D reduced MHD nonlinear solver", L. Chacon, D. A. Knoll, and J. M. Finn, J. Comp. Phys 178, 15 (2002).

"Nonlinear Study of the Curvature-Driven Parallel Velocity Shear Instability", L. Chacón, J. M. Finn, and D. A. Knoll, Phys. Plasmas 9, 1164 (2002).

"Lagrangian Chaos and Eulerian Chaos in Shear Flow Dynamics", J. M. Finn and D. del- Castillo-Negrete, CHAOS 11, 816 (2001).

"Magnetic Helix Formation Driven by Keplerian Disk Rotation in an External Plasma Pressure", H. Li, R. V. E. Lovelace, J. M. Finn, and S. A. Colgate, Astrophys. J. 551, 915 (2001).

“Blowout bifurcations and the onset of magnetic activity in turbulent dynamos”, D. Sweet, E. Ott, T. M. Antonsen, J. M. Finn, and D. P. Lathrop, Phys. Rev. E (art. no. 066211) 6306, 6211 (2001).

"Blowout Bifurcations and the Onset of Magnetic Dynamo Action", D. Sweet, E. Ott, T. M. Antonsen, D. P. Lathrop, and J. M. Finn, Phys. Plasmas 8, 1944 (2001).

"Fluid and Kinetic Stability of Virtual Cathodes for the Periodically Oscillating Plasma Sphere (POPS)", R. A. Nebel and J. M. Finn, Phys. Plasmas 8, 1505 (2001).

"Formation and Sustainment of Electrostatically Driven Spheromaks in the Resistive Magnetohydrodynamic Model", C. R. Sovinec, J. M. Finn, and D. del-Castillo-Negrete, Phys. Plasmas 8, 475 (2001).

"Chaotic Scattering and Self-Organization in Spheromak Sustainment", J. M. Finn, C. R. Sovinec, and D. del-Castillo-Negrete, Phys. Rev. Lett. 85, 4538 (2000).

"Kinetic and Fluid Calculations for the Periodically Oscillating Plasma Sphere", R. A. Nebel and J. M. Finn, Phys. Plasmas 7, 839 (2000).

"Rossby Wave Instability in Thin Accretion Disks II: Detailed Linear Theory", H. Li, J. M. Finn, S. A. Colgate, and R. V. Lovelace, Astrophys J. 533, 1023 (2000).

"Destabilization of the m=1 Diocotron Mode in Nonneutral Plasmas", J. M. Finn, D. del- Castillo-Negrete, and D. C. Barnes, Phys. Rev. Lett. 84, 2401 (2000).

"Compressional Effects in Nonneutral Plasmas, a Shallow Water Analogy and m=1 Instability", J. M. Finn, D. del-Castillo-Negrete, and D. C. Barnes, Phys. Plasmas 6, 3744 (1999).

"Nonlinear Drift Tearing Modes in the Presence of Resistive Wall and Field Errors", J. M. Finn, Phys. Plasmas 5, 3595 (1998).

"Nonlinear Tearing Modes in the Presence of Resistive Wall and Rotation", J. M. Finn and C. R. Sovinec, Phys. Plasmas 5, 461 (1998).

"Orbital Resonances and Chaos in a Combined RF Trap", J. M. Finn, R. Nebel, A. Glasser, and H. R. Lewis, Phys. Plasmas 4, 1238 (1997).

"Magnetic Reconnection and the Topology of Interacting Flux Tubes", Y.-T. Lau and J. M. Finn, Phys. Plasmas 3, 3983 (1996).

"Time-Dependent Perturbation Theory for the Construction of Invariants of Hamiltonian Systems", H. R. Lewis, J. W. Bates, and J. M. Finn, Physics Letters A 215, 160 (1996).

"Mode Coupling Effects on Resistive Wall Instabilities", J. M. Finn and R. A. Gerwin, Phys. Plasmas 3, 2344 (1996).

"Parallel Transport in Ideal Magnetohydrodynamics and Applications to Resistive Wall Modes", J. M. Finn and R. A. Gerwin, Phys. Plasmas 3, 2469 (1996).

"New Parallel Velocity Shear Instability", J. M. Finn, Phys. Plasmas 2, 4400 (1995).

"Stabilization of Ideal Plasma Resistive Wall Modes in Cylindrical Geometry: The Effect of Resistive Layers", J. M. Finn, Phys. Plasmas 2, 3782 (1995).

"Streaming Instabilities of a Nonneutral Plasma with Turning Points", L. Turner and J. M. Finn, Phys. Plasmas 2, 1378 (1995).

"Resistive Wall Stabilization of Kink and Tearing Modes", J. M. Finn, Phys. Plasmas 2, 198 (1995).

"Improved Low Order Model for Shear Flow Driven by Rayleigh-Benard Convection", K. Hermiz, P. Guzdar, and J. M. Finn, Phys. Rev. E 51, 325 (1995).

“Three-Dimensional Magnetohydrodynamic Equilibria of Solar Coronal Loops", J. M. Finn, P. N. Guzdar, and D. Usikov, Astrophys. J. 427, 475 (1994).

"Two-Dimensional Nonlinear Dynamics of Four Driven Vortices", P. N. Guzdar, J. M. Finn, A. V. Rogalsky and J. F. Drake, Phys. Rev. E 49, 2062 (1994).

"The Role of Self-Consistent Lagrangian Chaos in Benard Convection in an Annulus", J. M. Finn and K. Hermiz, Phys. Fluids B 5, 3897 (1993).

"Long-Term Containment of Energetic Particles in Coronal Loops", Y.-T. Lau, T. G. Northrop, and J. M. Finn, Astrophys. J. 414, 908 (1993).

"Loss of Equilibrium and Reconnection in Tearing of Two-Dimensional Equilibria", J. M. Finn and P. N. Guzdar, Phys. Fluids B 5, 2870 (1993).

"The Magnetic Field Structures of a Class of Fast Dynamos", Y.-T. Lau and J. M. Finn, The Cosmic Dynamo, F. Krause et. al. (eds.), p. 231-235 (1993).

"Nonlinear Interaction of Rayleigh-Taylor and Shear Instabilities", J. M. Finn, Phys. Fluids B 5, 415 (1993).

"Fast Dynamos with Finite Resistivity in Steady Flows with Stagnation Points", Y.-T. Lau and J. M. Finn, Phys. Fluids B 5, 365 (1992).

"Instability of Fluid Vortices and Generation of Sheared Flow", J. Finn, J. Drake, and P. Guzdar, Phys. Fluids B 4, 2758 (1992).

"Peeling of Convection Cells and the Generation of Sheared Flow", J. Drake, J. Finn, P. Guzdar, V. Shapiro, V. Shevchenko, F. Waelbroeck, A. Hassam, C. S. Liu, and R. Sagdeev, Phys. Fluids B 4 (Letters), 488 (1992).

"Particle Transport and Rotation Damping due to Stochastic Magnetic Field Lines", J. M. Finn, P. N. Guzdar, and A. A. Chernikov, Phys. Fluids B 4, 1152 (1992).

"Dynamics of a Three-Dimensional Incompressible Flow with Stagnation Points", Y.-T. Lau and J. M. Finn, Physica D 57, 283 (1992).

"Single and Multiple Helicity Dynamo States in Reversed Field Pinches", J. Finn, R. Nebel, and C. Bathke, Phys. Fluids B 4, 1262 (1992).

"Plasma Heating by Collisionless Magnetic Reconnection", R. Moses, J. Finn, and K.-M. Ling, J. Geophys. Res. 98, 4013 (1993).

"Transverse Mode Interference in Systems with Discrete Energy Levels: Application to Waveguide Filters", J. Booske, J. Finn, and P. Latham, Int. J. Electronics 72, 273 (1992).

"Fast Plasmoid Formation in Double Arcades", J. Finn, P. Guzdar, and J. Chen, Astrophys. J. 393, 800 (1992).

"q=2 Resonant Bifurcations for Tokamak Field Lines, Period Doubling, and Field Line Chaos", J. M. Finn, Comments Plasma Phys. Contr. Fusion 14, 149 (1991).

"Magnetohydrodynamic Equilibrium in the Vicinity of an X-Type Neutral Line specified by Footpoint Shear", J. Finn and Y. -T. Lau, Phys. Fluids B 3, 2675 (1991).

"The Formation of a Flux Core Spheromak", J. Finn and P. Guzdar, Phys. Fluids B 3, 1041 (1991).

"The Fractal Dimension in Nonhyperbolic Chaotic Scattering", Y.-T. Lau, J. M. Finn, and E. Ott, Phys. Rev. Lett. 66, 978 (1991).

"Steady Fast Dynamo Flows", J. Finn, J. Hanson, I. Kan, and E. Ott, Phys. Fluids B3, 1250 (1991).

"Three-Dimensional Kinematic Reconnection of Plasmoids", Y. -T. Lau and J. M. Finn, Astrophys. J. 366, 577 (1991).

"The Fast Kinematic Dynamo and the Dissipationless Limit", J. M. Finn and E. Ott, Phys. Fluids B2, 916 (1990).

"Chaotic Flows and Fast Magnetic Dynamos", E. Ott and J. M. Finn, Comments Plasma Phys. Contr. Fusion 13, 113 (1990).

"Equilibrium of Solar Coronal Arcades", J. Finn and J. Chen, Astrophys. J. 349, 345 (1990).

"Three-Dimensional Kinematic Reconnection in the Presence of Field Nulls and Closed Field Lines", Y.-T. Lau and J. M. Finn, Astrophys. J. 350, 672 (1990).

"Free Electron Laser with Small Period Wiggler and Sheet Electron Beam: A Study of the Feasibility of Operation at 300 GHz with 1 MW CW Output Power", J. Booske, V. Granatstein, T. Antonsen, W. Destler, J. Finn, P. Latham, B. Levush, I. Mayergoyz, D. Radack, J. Rodgers, M. Read, and A. Linz, Nucl. Inst. and Meth. in Phys. Res. A285, 92 (1989).

"Do Steady Fast Magnetic Dynamos Exist?" J. M. Finn, J. D. Hanson, I. Kan, and E. Ott, Phys. Rev. Lett. 62, 2965 (1989).

"Chaotic Flows and Fast Magnetic Dynamos", J. M. Finn and E. Ott, Phys. Fluids 31, 2992 (1988).

"Magnetic Helicity Injection for Configurations with Field Errors", J. M. Finn and T. M. Antonsen, Jr., Phys. Fluids 31, 3012 (1988).

"Chaotic Flows and Magnetic Dynamos", J. M. Finn and E. Ott, Phys. Rev. Lett. 60, 760 (1988).

"Space Charge Limited and Temperature Limited Electron Flow in the Vicinity of Edges and Conical Points", J. M. Finn, T. M. Antonsen, Jr., and W. M. Manheimer, IEEE Trans. Plasma Sci. 16, 281 (1988).

"Axisymmetric Equilibria in the Maryland Spheromak", R. Shaw and J. M. Finn, Nucl. Fusion 27, 1309 (1987).

"Nonlinear Stability and the Energy-Casimir Method", J. M. Finn and G.-Z. Sun, Comments Plasma Phys. Contr. Fusion 11, 7 (1987).

"Double Adiabatic Relaxation and Stability", G.-Z. Sun and J. M. Finn, Phys. Fluids 30, 770 (1987).

"Anomalous Current Penetration and Oscillating Current Drive in Tokamaks", J. M. Finn and T. M. Antonsen, Jr., Phys. Fluids 30, 2450 (1987).

"Boundary Integral Method for Computing Eigenfunctions in Slotted Gyrotron Cavities", S. McDonald, J. M. Finn, W. Manheimer, and M. Read, Int. J. Electronics 61, 795 (1986).

"Magnetic Curvature Drift Instability", J. Finn and J. F. Drake, Phys. Fluids 29, 3672 (1986).

"One Dimensional Models for Relativistic Electron Beam Diode Design", J. Finn, A. Fliflet, and W. Manheimer, Int. J. Electronics 61, 985 (1986).

"Relaxation Model for Helicity Injection in Ohmic- and Oscillating Current-Driven RFP Discharges", J. Finn, Phys. Fluids 29, 2630 (1986).

"The Role of Magnetic Reconnection and Differential Rotation in Spheromak Formation", P. Guzdar,
J. Finn, K. Whang, and A. Bondeson, Phys. Fluids 28, 3154 (1985).

“Magnetic Helicity: what is it and what is it good for?”, J. Finn and T. Antonsen, Comments on Plasma Physics and Controlled Fusion 9, 111 (1985).

"Acceleration of an Electron Ring in a Modified Betatron with Transverse Pressure", J. Grossmann, J. Finn, and W. Manheimer, Phys. Fluids 28, 695 (1985).

"Magnetic Curvature Drift Instability", J. Finn and J. Drake, Phys. Rev. Lett. 534, 2308 (1984).

"Tilt and Shift Mode Stability in a Spheromak with a Flux Core", J. Finn, Phys. Fluids 27, 2973 (1984).

"Flux Diffusion and Acceleration in a High Current Modified Betatron", J . Grossmann, W. Manheimer, and J. Finn, Particle Accelerators 16, 185 (1984).

"Turbulent Relaxation of Compressible Plasmas with Flow", J. Finn and T. Antonsen, Phys. Fluids 26, 3540 (1983).

"Self-Consistent Theory of Equilibrium and Acceleration of a High Current Electron Ring in a Modified Betatron", W. Manheimer and J. Finn, Particle Accelerators 14, 29 (1983).

"Self-Consistent Equilibrium and Adiabatic Evolution of a High Current Electron Ring in a Modified Betatron", J. Finn and W. Manheimer, Phys. Fluids 26, 3400 (1983).

"Drift Resistive Interchange Modes and Tearing Modes in Cylindrical Geometry", J. Finn, W. Manheimer, and T. Antonsen, Phys. Fluids 26, 962 (1983).

"Field-Reversed Configurations with a Component of Energetic Particles", J. Finn and R. Sudan, Nucl. Fusion (REVIEW PAPER) 22, 1443-1518 (1982).

"Optimal Plasma-beta in an MHD-Stable Field Reversed Configuration with Energetic, Large Orbit Ions", L. Sparks, R. Sudan, and J. Finn, Phys. Fluids 25, 908 (1982).

"Resistive Interchange Modes in Reversed Field Pinches", J. Finn and W. Manheimer, Phys. Fluids 25, 697 (1982).

"Tilt and Shift Mode Stability in Spheromaks with Line Tying", J. Finn and A. Reiman, Phys. Fluids 25, 116 (1982).

"Free Boundary n=1 Magnetohydrodynamic Modes in Spheromaks with Line Tying", J. Finn and A. Reiman, Phys. Rev. A 24, 2835 (1981).

"Transport Studies in Reversed Field Theta Pinches", W. Manheimer and J. Finn, Phys. Fluids 24, 1865 (1981).

"Spheromak Tilting Instability in Cylindrical Geometry", J. Finn, W. Manheimer, and E. Ott, Phys. Fluids 24, 1336 (1981).

"Ballooning and Interchange Stability in Axisymmetric Field Reversed Equilibria", J. Finn, Phys. Fluids 24, 274 (1981).

"Bifurcation and ‘Strange’ Behavior in Instability Saturation by Nonlinear Three-Wave Coupling", J.-M. Wersinger, J. Finn, and E. Ott, Phys. Fluids 23, 1142 (1980).

"Interchange Instability of Axisymmetric Field Reversed Equilibria", L. Sparks, J. Finn, and R. Sudan, Phys. Fluids 23, 611 (1980).

"Bifurcations and Strange Behavior in Instability Saturation by Nonlinear Mode Coupling", J.-M. Wersinger, J. Finn, and E. Ott, Phys. Rev. Lett. 44, 453 (1980).

"Normal Form for Mirror Machine Hamiltonians", A. Dragt and J. Finn, J. Math. Phys. 20, 2649 (1979).

"Kink Instabilities of a Field Reversed Ion Ring with a Toroidal Magnetic Field", J. Finn, Phys. Fluids 22, 1770 (1979).

"Betatron Resonance Instabilities in Axisymmetric Field-Reversed Systems", J. Finn and R. Sudan, Phys. Fluids 22, 1148 (1979).

"Stochastic Behavior of Particle Orbits in Field Reversed Geometries", J. Finn, Plasma Phys. 21, 405 (1979).

"Resonant Effects on the Low-Frequency Vlasov Stability of Axisymmetric Field-Reversed Configurations", J. Finn and R. Sudan, Phys. Rev. Lett. 41, 695 (1978).

"Ergodic Behavior of Lower Hybrid Decay Wave Ray Trajectories in Toroidal Geometry", J.-M. Wersinger, E. Ott, and J. Finn, Phys. Fluids 21, 2

"Coupling of Tearing Modes in Tokamaks", J. Finn, Phys. Fluids 20, 1749 (1977).

"Coalescence Instability of Magnetic Islands", J. Finn and P. Kaw, Phys. Fluids 20, 72 (1977).

"Lie Series and Invariant Functions for Analytic Symplectic Maps", A. Dragt and J. M. Finn, J. Math. Phys. 17, 2215 (1976).

"Insolubility of Trapped Particle Motion in a Magnetic Dipole Field", A. J. Dragt and J. M. Finn, J. Geophys. Res. 81, 2327 (1976).

"The Destruction of Magnetic Surfaces in Tokamaks by Current Perturbations", J. M. Finn, Nucl. Fusion 15, 845 (1975).

"Wave Propagation Aspects of the Generalized Theory of Heat Conduction", J. M. Finn and Lewis T. Wheeler, Zeitschrift für Angewandte Mathematik and Physik 23, 927 (1972).