Selected Publications

(Spheromaks, astrophysical jets, and accretion disk)


P. M. Bellan, Integrated accretion disk angular momentum removal and astrophysical jet acceleration mechanism, to appear in Monthly Notices of the Royal Astronomical Society 2016, preprint

X. Zhai, and P. M. Bellan, A hybrid Rayleigh-Taylor-Current-Driven coupled instability in an MHD collimated cylindrical plasma with lateral gravity, to appear in Phys. Plasmas 2016, preprint

K. B. Chai, X. Zhai, and P. M. Bellan, EUV burst, particle heating and whistler wave emission in fast magnetic reconnection induced by kink-driven Rayleigh-Taylor instability, to appear in Phys. Plasmas 2016, preprint 

P. M. Bellan, Orbits of magnetized charged particles in parabolic and inverse electrostatic potentials, J. Plasma Physics 82, 615820101 (2016)

V. H. Chaplin and P. M. Bellan, One-dimensional time-dependent fluid model of a very high density low-pressure inductively coupled plasma, J. Applied Phys. 118, 243303 (2015)

P. M. Bellan, X. Zhai, K. B. Chai, and B. N. Ha, Complex astrophysical experiments relating to jets, solar loops, and water ice dusty plasma, J. Plasma Phys. 81, 495810502 (2015)

P. M. Bellan and R. Paccagnella, Magnetic axis safety factor of finite β spheromaks and transition from spheromaks to toroidal magnetic bubbles, Phys. Plasmas 22, 022513 (2015)

P. M. Bellan and R. J. Perkins, Orbit-averaged quantities, the classical Hellmann-Feynman theorem, and the magnetic flux enclosed by gyro-motion, Phys. Plasmas 22, 022108 (2015)

P. M. Bellan, Fast, purely growing collisionless reconnection as an eigenfunction problem related to but not involving linear whistler waves, Phys. Plasmas 21, 102108 (2014)

X. Zhai, H. Li,  P. M. Bellan, and S. Li, Three dimensional MHD simulation of the Caltech plasma jet experiment: first results", Astrophysical Journal 791:40 (2014)

K. B.  Chai and P. M. Bellan, Extreme Ultra-Violet Movie Camera for Imaging Microsecond Time-Scale Magnetic Reconnection, Rev. Sci. Instrum. 84, 123504 (2013)

T. Shikama and P. M. Bellan, Development of a polarization resolved spectroscopic diagnostic for measurements of the vector magnetic field in the Caltech coaxial magnetized plasma jet experiment, Rev. Sci. Instrum. 84, Art. 023507 (2013)

V. Chaplin and P. M. Bellan, Fast Ignitron Trigger Circuit Using Insulated Gate Bipolar Transistors, IEEE Trans. Plasma Sci. 41, 975 (2013)

X. Zhai and P. M. Bellan, An earth-isolated optically coupled wideband high voltage probe powered by ambient light, Rev. Sci. Instrum. 83, 104703 (2012)

A. L. Moser and P. M. Bellan, Magnetic reconnection from a multiscale instability cascade, Nature 482, 379 (2012)

A. L. Moser and P. M. Bellan, Observations of magnetic flux compression in jet impact experiments, Astrophysics and Space Science 337, 593 (2012)

R. J. Perkins and P. M. Bellan, Elimination of Radio-Frequency Noise by Identifying and Diverting Large RF Ground Currents, in Radio Frequency Power in Plasmas: Proceedings of the 19th Topical Conference, AIP Conference Proceedings 1406 (2011)

R. J. Perkins and P. M. Bellan, Wheels within Wheels: Hamiltonian Dynamics as a Hierarchy of Action Variables, Phys. Rev. Lett. 105, art 124301 (2010)

P. M. Bellan, D. Kumar, E. V. Stenson, S. K. P. Tripathi, G. S. Yun, and A. L. Moser, Laboratory simulations of astrophysical jets and solar coronal loops: new results, Proc. Symposium on Plasmas in the Laboratory and in the Universe, interactions, patterns, and turbulence, Como (Italy), 2009, preprint

D. Kumar and P. M. Bellan, Nonequilibrium Alfvenic Plasma Jets Associated with Spheromak Formation, Phys. Rev. Lett. 105, art 105003 (2009)

P. M. Bellan, M. Livio, Y. Kato, S. V. Lebedev, T. P. Ray, A. Ferrari, P. Hartigan, A. Frank, J. M. Foster, and P. Nicolai, Astrophysical jets: Observations, numerical simulations, and laboratory experiments, Phys. Plasmas 16, art. 041005 (2009)

P. M. Bellan, Dust-driven Dynamos in Accretion Disks, Astrophysical Journal 687, 311 (2008), preprint at

P. M. Bellan, Enrichment of the dust-to-gas mass ratio in Bondi/Jeans accretion/cloud systems due to unequal changes in dust and gas incoming velocities,  Astrophysical Journal 678, 1099 (2008),  preprint at

P. M. Bellan, Consideration of the relationship between Kepler and cyclotron dynamics leading to prediction of a nonmagnetohydrodynamic gravity-driven Hamiltonian dynamo, Phys. Plasmas 14,  Art. No. 122901  (2007)

P. M. Bellan, Simple system for locating ground loops, Rev. Sci. Instrum. 78,  Art. No. 065104 (2007)

G. S. Yun, S. You, and P. M. Bellan, Large density amplification measured on jets ejected from a magnetized plasma gun, Nucl. Fusion 47, 181 (2007)  

P. M. Bellan, S. You and G. S. Yun, Measurements of Plasma Jets and Collimated Flux Tubes that are the Precursors of Spheromak Self-organization, J. Fusion Energy 10.1007/s10894-006-9048-z (2006)

D. Kumar D and P. M. Bellan, Heterodyne interferometer with unequal path lengths, Rev. Sci. Instrum. 77, art. 083503 (2006)  

C. A. Romero-Talamas, C. Hocomb, P. M. Bellan, and D. N. Hill, Spheromak formation and sustainment studies at the sustained spheromak physics experiment using high speed imaging and magnetic diagnostics, Phys. Plasmas 13, art. 022502 (2006)

S. You, G. S. Yun, and P.  M. Bellan, Dynamic and stagnating plasma flow leading to magnetic-flux-tube collimation, 
Phys. Rev. Lett. 95, art. 045002 (2005)

P. M. Bellan, S. You, and S. C. Hsu, Simulating astrophysical jets in laboratory experiments, Astrophys. Space Sci. 298, 203 (2005), preprint

P. M. Bellan, Miniconference on astrophysical jets, Phys. Plasmas 12, art. 032103 (2005)

S. C. Hsu and P. M. Bellan, On the jets, kinks, and spheromaks formed by a planar magnetized coaxial gun, Phys. Plasmas 12, art. 032103 (2005), Arxiv web preprint 

C. A. Romero-Talamas, P. M. Bellan, and S. C. Hsu, Multi-element magnetic probe using commercial chip inductors, Rev. Sci. Instrum. 75, 2664 (2004)

S. C. Hsu and P. M. Bellan, Experimental Identification of the Kink Instability as a Poloidal Flux Amplification Mechanism for Coaxial Gun Spheromak Formation, Phys. Rev. Letters 90, article 215002 (2003),  preprint

P. M. Bellan, Why current-carrying magnetic flux tubes gobble up plasma and become thin as a result,   Phys. Plasmas 10 Pt 2, 1999 (2003), Arxiv web preprint

P. M. Bellan, Generalization of cylindrical spheromak solution to finite beta and large reversed shear,  Physics of Plasmas 9, 3050 (2002),  preprint

P. M. Bellan, Thermal instability of electrolytic capacitor bank used for gas puff valve, Review of Scientific Instruments 73, 2900 (2002)

S. C. Hsu and P. M. Bellan, A laboratory plasma experiment for studying magnetic dynamics of accretion disks and jetsMon. Not. Royal Astron. Soc.334, 257 (2002),   preprint

S. C. Hsu and P. M. Bellan, Study of Magnetic Helicity Injection via Plasma Imaging Using a High-Speed Digital CameraIEEE Trans. Plasma Sci. 30, 10 (2002).,    preprint

P. M. Bellan, J. Yee, and J. F. Hansen, Spheromaks, solar prominences and Alfven instability of current sheets, Earth Planets and Space, 53, 495 (2001),  preprint

P. M. Bellan, J. Yee, and J. F. Hansen, Spheromaks, solar prominences, and Alfven instability of current sheets, Earth, Planets, Space 53, 495 (2001)

J. Yee and P. M. Bellan, Taylor relaxation and lambda decay of unbounded, freely-expanding spheromaks, Phys. Plasmas 7, 3625 (2000) preprint in PDF format

P. M. Bellan,  Alfven Wave Instability of Current Sheets in Force-Free Collisionless Plasmas, Phys. Rev. Letters.83, 4768 (1999).preprint in PDF format

P. M. Bellan, Spheromaks (Imperial College Press,2000) USA, Canada, UK ordering info

P. M. Bellan, Magnetic Helicity and Relaxation: Theory, in Magnetic Helicity in Space and Laboratory Plasmas, Geophysical Monograph 111 (ed. M.R. Brown, R. C. Canfield, A.A. Pevtsov, American Geophysical Union, 1999), p.119.

M. S. Chu, T. H. Jensen, and P.M. Bellan, General Taylor configuration expansion revisited, Phys. Plasmas 6 Pt 1, 1495 (1999)

J. Yee and P. M. Bellan, Effects of CT injector acceleration electrode configuration on tokamak penetration, Nucl. Fusion 38, 711 (1998).

P. K. Lowenhardt, J. Yee, and P. M. Bellan, Performance characterization of the Caltech compact torus injector, Rev. Sci. Instrum. 66, 1050 (1995).

M. R. Brown, A. D. Bailey III, and P. M. Bellan, Characterization of a spheromak plasma gun: the effect of refractory coatings, J. Appl. Phys. 69,6302(1991).

M. R. Brown and P. M. Bellan, Spheromak injection into a tokamak, Phys. Rev. Letters, 64,2144(1990).

Revised: April 14, 2016.

Spheromak page

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