W. Liu, J.
Goodman, I. Herron, and H. Ji, "Helical magnetorotational instability
in magnetized Taylor-Couette flow", Phys. Rev. E 74, 056302 (2006). (pdf)
H. Ji, M.
Burin,
E. Schartman, and J. Goodman, "Hydrodynamic turbulence cannot transport
angular momentum effectively in astrophysical disks", Nature 444, 343
(2006). (paper
or preprint from
Arxiv.org, introduction
by S. Balbus)
W. Liu, J.
Goodman, and
H. Ji, "Simulation of Magnetorotational Instability in a Magnetized
Couette Flow", Astrophys. J. 643, 306 (2006). (pdf)
M. Burin, E. Schartman, H. Ji, R. Cutler, P.
Heitzenroeder, W. Liu, L. Morris, and S. Raftopolous, "Reduction
of Ekman Circulation within Circular Couette Flow", Exp. Fluids 40, 962 (2006). (pdf)
H. Ji, W. Fox, D. Pace, and H. Rappaport, "Study of
Magnetohydrodynamic Surface Waves in Liquid Gallium", Phys. Plasmas
12, 012102 (2005). (Abstract)
(pdf file)
A. Kageyama, H. Ji, J. Goodman, F. Chen, and E. Shoshan,
"Numerical and Experimental Investigation of Circulation in Short
Cylinders", J. Phys. Soc. Jpn. 73, 2434(2004).
(Abstract)
(pdf file)
J. Goodman and H. Ji, "Magnetorotational Instability of
Dissipative Couette Flow", J. Fluid Mech. 462, 365(2002).
(Abstract)
(pdf file)
H. Ji, J. Goodman, and A. Kageyama, "Magnetorotational
Instability in a Rotating Liquid Metal Annulus", Monthly Notices of
Royal Astronomical Society 325, L1(2001).
(Abstract)
(pdf file)
M. Inomoto, S. Gerhardt, M. Yamada, H. Ji, E. Belova, A.
Kuritsyn, and Y. Ren, "Coupling between Global Geometry and the Local
Hall Effect Leading to Reconnection-Layer Symmetry Breaking", Physical
Review Letters 97, 135002
(2006). (pdf)
M. Yamada, Y. Ren, H. Ji, J. Breslau, S. Gerhardt, R.
Kulsrud,
and A. Kuritsyn, "Experimental study of two-fluid effects on magnetic
reconnection in a laboratory plasma with variable collisionality",
Physics of Plasmas 13, 052119
(2006). (pdf)
A. Kuritsyn, M. Yamada, S. Gerhardt, H. Ji, R. Kulsrud, and
Y.
Ren, "Measurements of the parallel and transverse Spitzer resistivities
during collisional magnetic reconnection",
Physics of Plasmas 13, 055703
(2006). (pdf)
Y. Ren, M. Yamada, S. Gerhardt, H. Ji, R. Kulsrud, and
A.Kuritsyn, "Experimental Verification of the Hall Effect during
Magnetic
Reconnection in a Laboratory Plasma", Phys. Rev. Lett. 95,
055003 (2005). (Abstract)
(pdf file)
R. Kulsrud, H. Ji, W. Fox, and M. Yamada, "An electromagnetic
drift instability in the magnetic reconnection experiment and its
importance for magnetic reconnection",
Phys. Plasmas 12, 082301 (2005). (Abstract)
(pdf file)
H. Ji, R. Kulsrud, W. Fox, and M. Yamada, "An obliquely
propagating electromagnetic drift instability in the lower hybrid
frequency range",
J. Geophys. Res. 110, A08212 (2005). (Abstract)
(pdf file)
H. Ji, S. Terry, M. Yamada, R. Kulsrud, A. Kuritsyn, and Y.
Ren,
"Electromagnetic Fluctuations during Fast Reconnection in a Laboratory
Plasma",
Phys. Rev. Lett. 92, 115001(2004).
(Abstract)
(pdf file)
F. Trintchouk, M. Yamada, H. Ji, R. M. Kulsrud, and T. A.
Carter "Measurement of the transverse Spitzer resistivity during
collisional magnetic reconnection",
Phys. Plasmas 10, 319(2003).
(Abstract)
(pdf file)
T. Carter, M. Yamada, H. Ji, R. Kulsrud, and F. Trintchouk
"Experimental study of lower-hybrid drift turbulence in a reconnecting
current sheet",
Phys. Plasmas 9, 3272(2002).
(Abstract)
(pdf file)
T. Carter, H. Ji, F. Trintchouk, M. Yamada, and R. Kulsrud,
"Measurement of Lower-Hybrid Drift Turbulence in a Reconnecting Current
Sheet",
Phys. Rev. Lett. 88, 015001(2002).
(Abstract)
(pdf file)
Hantao Ji, Troy Carter, Scott Hsu, and Masaaki Yamada,
"Study of Local Reconnection Physics in a Laboratory Plasma",
Earth Planets Space 53, 539(2001).
(Abstract)
(pdf file)
S. Hsu, T. Carter, G. Fiksel, H. Ji, R. Kulsrud, and M.
Yamada
"Experimental Study of Ion Heating and Acceleration during Magnetic
Reconnection",
Phys. Plasmas 8, 1916(2001).
(Abstract)
(pdf file)
S. Hsu, G. Fiksel, T. Carter, H. Ji, R. Kulsrud, and M.
Yamada, "Local Measurement of Nonclassical Ion Heating during Magnetic
Reconnection",
Phys. Rev. Lett. 84, 3859(2000).
(Abstract)
(pdf file)
M. Yamada, H. Ji et al., "Experimental investigation of the
neutral sheet profile during magnetic reconnection", Phys. Plasmas 7,
1781(2000).
(Abstract)
(pdf file)
H. Ji, "Helicity, Reconnection, and Dynamo Effects", AGU
monograph "Magnetic Helicity in Space and Laboratory Plasmas", p.167
(1999).
(Abstract)
(pdf
file)
H. Ji, M. Yamada et al., "Magnetic Reconnection with
Sweet-Parker Characteristics in Two-dimensional Laboratory Plasmas",
Phys. Plasmas 6, 1743(1999).
(Abstract)
(pdf file)
H. Ji, M. Yamada et al., "Experimental Test of the
Sweet-Parker
Model of Magnetic Reconnection", Phys. Rev. Lett. 80,
3256(1998).
(Abstract)
(pdf file)
M. Yamada, H. Ji et al., "Identification of Y-Shaped and
O-Shaped Diffusion Regions during Magnetic Reconnection in a Laboratory
Plasma", Phys. Rev. Lett. 78, 3117(1997).
(Abstract)
(pdf file)
M. Yamada, H. Ji et al., "Study of Driven Magnetic
Reconnection in a Laboratory Plasma", Phys. Plasmas 4,
1936(1997).
(Abstract)
(pdf file)
Dynamo EMF measurements, magnetic helicity conservation,
fluctuation driven transport, confinement improvement in the Madison Symmetric
Torus (MST), a medium-sized, toroidal reversed field pinch (RFP)
device in the Department of Physics at the University of Wisconsin-Madison.
Selected publications:
E. Blackman and H. Ji, "Laboratory plasma dynamos,
astrophysical dynamos and magnetic helicity evolution", Monthly Notices
of
Royal Astronomical Society 369, 1837(2006).
(pdf file)
H. Ji and S.C. Prager, "The Alpha Dynamo Effects in
Laboratory Plasmas", Magnetohydrodynamics 18, 191(2002).
(Abstract)
(pdf file)
H. Ji, "Turbulent Dynamos and Magnetic Helicity", Phys. Rev.
Lett. 83, 3198(1999).
(Abstract)
(pdf file)
H. Ji, A.F.Almagri, S.C.Prager, and J.S.Sarff,
"Time-resolved Observation of Discrete and Continuous MHD Dynamo in the
Reversed-Field Pinch Edge", Phys. Rev. Lett. 73, 668 (1994).
(Abstract)
(pdf file)
H. Ji et al., "Effect of Collisionality and Diamagnetism on
the Plasma Dynamo", Phys. Rev. Lett. 75, 1086 (1995).
(Abstract)
(pdf file)
H. Ji et al., "Measurement of the dynamo effect in a
plasma",
Phys. Plasmas 3, 1935 (1996).
(Abstract)
(pdf file)
H. Ji, S.C.Prager, and J.S.Sarff, "Conservation of Magnetic
Helicity during Plasma Relaxation", Phys. Rev. Lett. 74, 2945
(1995).
(Abstract)
(pdf file)
M.R. Stoneking et al., "Particle Transport due to Magnetic
Fluctuations", Phys. Rev. Lett. 73, 549 (1994).
(pdf file)
J.S. Sarff, S.A. Hokin, H. Ji, S.C.Prager, and C.R. Sovinec,
"Fluctuation and Transport Reduction in a Reversed Field Pinch by
Inductive Poloidal Current Drive", Phys. Rev. Lett. 72, 3670
(1994).
(pdf file)
Concept innovation for magnetically confined fusion plasmas in
the proposed SPIRIT (Self-organized Plasmas with Induction,
Reconnection, and Injection Techniques): Field Reversed Configuration
(FRC) plasmas formed by counter-helicity merging of spheromaks and
low-aspect-ratio Reversed Field Pinch (RFP) plasmas formed by
co-helicity merging of spheromaks. Selected Publications:
S. P. Gerhardt, E. Belova, M. Inomoto, M. Yamada, H. Ji, Y.
Ren, and A. Kuritsyn, "Equilibrium and stability studies of oblate
field-reversed configurations in the Magnetic Reconnection Experiment",
Phys. Plasmas 13, 112508 (2006) (pdf file)
H. Ji, E. Belova, S. P. Gerhardt, and M. Yamada, "Recent
Advances in
the SPIRIT (Self-organized Plasma with Induction, Reconnection, and
Injection Techniques) Concept", J. Fusion Energy (2006)( pdf file)
Elena V. Belova, Ronald C. Davidson, Hantao Ji, and Masaaki
Yamada,
"Advances in the numerical modeling of field-reversed configurations",
Phys. Plasmas 13, 056115 (2006).
E.V. Belova, R.C. Davidson, H. Ji, M. Yamada, C.D. Cothran,
M.R. Brown and M.J. Schaffer, "Numerical study of the formation, ion
spin-up and nonlinear stability properties of field-reversed
configurations", Nucl. Fusion 46, 162-170 (2006).
E. Belova, R. Davidson, H. Ji, and M. Yamada,
"Kinetic effects on the stability properties of field-reversed
configurations. II. Nonlinear evolution",
Phys. Plasmas 11, 2523(2004).
E. Belova, R. Davidson, H. Ji, and M. Yamada,
"Kinetic effects on the stability properties of field-reversed
configurations. I. Linear stability",
Phys. Plasmas 10, 2361(2003).
E. Belova, S. Jardin, H. Ji, M. Yamada, and R. Kulsrud,
"Numerical study of global stability of oblate field-reversed
configurations",
Phys. Plasmas 8, 1267(2001).
(Abstract)
(pdf file)
E. Belova, S. Jardin, H. Ji, M. Yamada, and R. Kulsrud,
"Numerical study of tilt stability of prolate field-reversed
configurations",
Phys. Plasmas 7, 4996(2000).
(Abstract)
(pdf file)
A. B. Hassam, R. M. Kulsrud, R. J. Goldston, H. Ji, and M.
Yamada, "Steady State Thermoelectric Field-Reversed Configurations",
Phys. Rev. Lett. 83, 2969(1999).
(Abstract)
(pdf file)
H. Ji et al., "Studies of Global Stability of Field-reversed
Configuration Plasmas Using a Rigid Body Model", Phys. Plasmas 5,
3685(1998).
(Abstract)
(pdf file)
H. Ji, H. Toyama, K. Miyamoto, S. Shinohara, and A.
Fujisawa,
"Fluctuation and Electron-Heat Transport in a Reversed-Field-Pinch
Plasma", Phys. Rev. Lett. 67, 62 (1991).
(Abstract)
(pdf file)
H. Ji, H. Toyama, A. Fujisawa, S. Shinohara, and K.
Miyamoto,
"Fluctuation and Edge Current Sustainment in a Reversed-Field-Pinch",
Phys. Rev. Lett. 69, 616 (1992).
(Abstract)
(pdf file)
A. Fujisawa, H. Ji et al., "Anomalous Ion Temperature and
Plasma Resistance due to MHD Fluctuation in REPUTE-1 RFP Plasma",
Nucl. Fusion 31, 1443 (1991).