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A. Collette and W. Gekelman, Two-dimensional micron-step probe drive for laboratory plasma measurement, Rev. Sci. Instr., v79, 083505, 2008. B. Van Compernolle, G. Morales, and W. Gekelman, Cherenkov radiation of shear Alfvén waves, Phys. Plasmas, v15 082101, 2008. D. C. Pace, M. Shi, J. E. Maggs, G. J. Morales, and T. A. Carter, Exponential Frequency Spectrum in Magnetized Plasmas, Phys. Rev. Lett, v101, 085001, 2008. S. Vincena,W. Gekelman, M.A. Van Zeeland, J. Maggs, A. Collette, Quasielectrostatic whistler wave radiation from the hot electron emission of a laser-produced plasma , Phys. Plasmas, v15 072114, 2008. D. C. Pace, M. Shi, J. E. Maggs, G. J. Morales, and T. A. Carter, Spontaneous Thermal Waves in a Magnetized Plasma, Phys. Rev. Lett. 101, 035003 (2008). Y. Zhang, W. W. Heidbrink, H Boehmer, R. McWilliams, G. Chen, S. Vincena, T. Carter, D. Leneman, W. Gekelman, P. Pribyl, and B. Brugman, Spectral gap of shear Alfvén waves in a periodic array of magnetic mirrors , Phys. Plasmas, v15, 012103, (2008). D. Leneman, Reflection of Alfvén waves from boundaries with different conductivities, Phys. Plasmas, v14, 122109, (2007). B. Jacobs, W. Gekelman, P. Pribyl, M. Barnes, and M. Kilgore, Laser-induced fluorescence measurements in an inductively coupled plasma reactor, App. Phys. Lett., 91 161505, (2007.) Y. Zhang, H. Boehmer, W. W. Heidbrink, R. McWilliams, D. Leneman, and S. Vincena, Lithium ion sources for investigations of fast ion transport in magnetized plasmas, Rev. Sci. Instrum, 78, 013302 (2007). W. Gekelman, A. Collette, and S. Vincena , Three-dimensional current systems generated by plasmas colldiing in a background magnetoplasma , Phys. Plasmas, 14, 062109 (2007). J.E. Maggs, T.A. Carter, and R.J. Taylor, Transition from Bohm to classical diffusion due to edge rotation of a cylindrical plasma, Phys. Plasmas, 14, 052507 (2007). F.S. Tsung, G.J. Morales, and J. Tonge, Alfvénic phenomena triggered by resonant absorption of an O-mode pulse, Phys. Plasmas, 14, 042101, 2007. W. Gekelman, J. Wise, P. Pribyl, R. Baker, W. Layton, J. Skrzypek, P. Niknejadi, R. Ransom, D. Lee, R. Zarinshesnas, T. Kim, R. Buck, E. Warfel, T. Tasoff, J. Carmona, S. Skolnik, L. Kim, D. Furlong, and N. Gibson, Ion acoustic wave experiments in a high school plasma physics laboratory, Am. J. Phys. 75 (2) 2007. Y. Zhang, H. Boehmer, W.W. Heidbrink, R. McWilliams, D. Leneman, and S. Vincena, Lithium ion sources for investigations of fast ion transport in magnetized plasma, Rev. Sci. Instrum., 78, 013302, 2007. V.A. Manasson, A. Avakian, A. Brailovsky, W. Gekelman, A. Gigliotti, L. Giubbolinni, I. Gordion, M. Felman, V. Khodos, V. Litvinov, P. Pribyl, L. Sadovnik, Time/Space-Probing Interferometer for Plasma Diagnostics, Proceedings of the 2006 Antenna Applications Symposium, Allerton Park, Monticello, Illinois, Sept 20-22, 2006
S. Vincena and W. Gekelman, Drift-Alfven wave mediated particle transport in an elongated density depression, Physics of Plasmas, vol.13, no.6, June 2006, pp. 64503-1-4 G. J. Morales and J. E. Maggs, Differential equation model of an Alfvén wave maser, Phys. Plasmas 13, 052109 (2006) (13 pages) T.A. Carter, B. Brugman, P. Pribyl, and W. Lybarger, Laboratory Observation of a Nonlinear Interaction between Shear Alfven Waves, Phys. Rev. Lett., 96, 155001, 2006. D. Leneman, W. Gekelman, and J. Maggs, The plasma source of the Large Plasma Device at University of California, Los Angeles, Rev. Sci. Instrum., 77, 015108 , 2006 T.A. Carter, Intermittent turbulence and turbulent structures in a linear magnetized plasma, Phys. Plasmas, 13, 010701-1 , 2006 B. Van Compernolle, W. Gekelman and P. Pribyl, Generation of suprathermal electrons and Alfvén waves by a high power pulse at the electron plasma frequency, Physics of Plasmas, vol 13, 092112, 2006. B. Van Compernolle, W. Gekelman, P. Pribyl, T. Carter, Generation of Alfvén waves by a high power pulse at the electron plasma frequency, Geo. Phys. Res. Letts. , 32, L08101, 2005 N. Palmer, W. Gekelman, and S. Vincena, Measurement of Ion Motion in a Shear Alfvén Wave, Phys. Plasmas 12, 072102 (2005). L. Zhao, W. W. Heidbrink, H. Boehmer, R. McWilliams, D. Leneman, and S. Vincena, Measurements of classical transport of fast ions, Phys. Plasmas 12, 052108 (2005). S. Vincena and W. Gekelman, Visualizing shear Alfvén wave currents near the ion-cyclotron frequency, IEEE Trans. Plasma Sci., pp 552, v33, n2, (2005). W. Gekelman and S. Vincena, Imaging complex three-dimensional Alfvén wave currents, Phys. Plasmas, IEEE Trans. Plasma Sci., pp 546, v33, n2, (2005). W. Horton, J. Perez, T. Carter, and R. Bengtson, Vorticity probes and the characterization of vortices in the Kelvin-Helmholtz instability in the large plasma device experiment, Phys. Plasmas, v12, n2, (2005). J. Maggs, G. Morales, and T. Carter, An Alfvén wave maser in the laboratory, Phys. Plasmas, v12, n1, (2005). Tsung FS, Tonge JW, Morales GJ., Particle simulation of Alfven waves excited at a boundary, Physics of Plasmas, vol.12, no.1, Jan. 2005, pp. 12508-1-11 S. Vincena, W. Gekelman, and J. Maggs, Shear Alfvén wave perpendicular propagation from the kinetic to the inertial regime, Phys. Rev. Lett, v93 n10, 2004. Experimental verification of the zero perpendicular group velocity turning point for Alfvén waves with a parallel phase speed near the electron thermal speed. H. Boehmer, D. Edrich, W. Heidbrink, R. McWilliams, L. Zhao, and D. Leneman, Operation of a 0.2-1.1 keV ion source within a magnetized laboratory plasma, Rev. Sci. Instr., v75, n4, (2004). P. Pribyl and W. Gekelman, 24kA solid state switch for plasma discharge experiments, Rev. Sci. Instr., v75, n3, (2004). R. Boswell, Cosmic Waves in the Lab, Nature, 25, 352, (2003) {review of the Alfvén wave maser} Tsung FS, Morales GJ, Leboeuf JN. Dynamics of a supersonic plume moving along a magnetized plasma, Physical Review Letters, vol.90, no.5, 7 Feb. 2003, pp. 0550041-4 Morales GJ, Tsung FS, Leboeuf JN. Dynamics of a supersonic plume moving along a magnetized plasma. AIP Conference Proceedings, no.669, 2003, pp. 749-5 W. Gekelman, M. Van Zeeland, S. Vincena, P. Pribyl, Laboratory Experiments of Alfvén waves caused by rapidly expanding plasmas and their relationship to space phenomena, J. Geophys. Res. 108, SMP-8-1 (2003) J. Maggs and G. Morales, Magnetic fluctuations of a large nonuniform plasma column, Phys. Plasmas, v10, n6, (2003). J. Maggs and G. Morales, Laboratory realization of an Alfvén wave maser, Phys. Rev. Lett., v91, n3, (2003). C. Kletzing, S. Bounds, J. Martin-Hiner, W. Gekelman, C. Mitchell, Measurements of the shear Alfven wave dispersion for finite perpendiular wave number, Phys. Rev. Lett, 90 (2003). A novel antenna is used to launch Alfven waves with small perpendicular (to B ) wavelengths. M. Van Zeeland, W. Gekelman, S. Vincena, J. Maggs, Currents and shear Alfven radiation generated by an expanding laser-produced plasma: perpendicular incidence , Phys. Plasmas, 10, 1243, (2003) W. Gekelman, LAPTAG- A Physics Outreach Program at UCLA, APS news Oct (2002) C. Mitchell, J. Maggs, W. Gekelman, Field line resonances in a cylindrical Plasma, Phys. Plasmas, 9, 2909, (2002). Experiment on Alfven field line resonances and comparison with theory. S. Rosenberg, W. Gekelman, A three dimensional experimental study of lower hybrid wave interactions with field aligned density depletions, Jour. Geophys. Res., 106, 28,867 (2001). Experimental study of an ionospheric phenomena D, Leneman, W. Gekelman, A novel angular motion feedthrough, Rev. Sci. Instrum, 72, 3473, (2001) S. Vincena, W. Gekelman, and J. Maggs, Shear Alfvén waves in a magnetic beach and the roles of electron and ion damping. Phys. Plasmas, v8, n9, Sept., 2001. M. VanZeeland, W.Gekelman, S. Vincena, and G. Dimonte, Production of Alfvén Waves by a Rapidly Expanding Dense Plasma, Phys. Rev. Lett., 2001. T. Drozdenko, G.J. Morales, Effect of Cross Field Flow on inertial Alfvén waves of small transverse scale length, Phys. Plasmas, 8, 3177, (2001) T. Drozdenko, G.J. Morales, Nonlinear effects resulting from the interaction of large-scale Alfvén wave with a density filament, Phys. Plasmas, 8, 3265 (2001) Mitchell, C.; Vincena, S.; Maggs, J.; Gekelman, W. Laboratory observation of Alfvén resonance. Geophysical Research Letters, vol.28, (no.5), American Geophys. Union, 1 March 2001. p.923-6. S. Rosenberg and W.Gekelman, A three-dimensional experimental study of lower hybrid wave interactions with field-aligned density depletion.Geophys. Res. Lett, 27, 859-862 (2000) Experimental Measurements of Large Amplitude Shear Waves and corresponding density perturbations, includes LIF measurements. W.Gekelman, S. Vincena, N. Palmer, P. Pribyl, D. Leneman, C. Mitchell, J. Maggs, Experimental Measurements of the Propagation of large-amplitude shear Alfvén waves, Plasma Phys. Control. Fusion, 42, B15-B26 (2000) T. Drozdenko, G.J. Morales, Interaction of a Shear Alfvén wave with a filamentary density perturbation in a low beta plasma, Phys. Plasmas, 7, 823, (2000) Burke AT, Maggs JE, Morales GJ. Experimental study of fluctuations excited by a narrow temperature filament in a magnetized plasma. [Journal Paper] Physics of Plasmas, vol.7, no.5, May 2000, pp. 1397-407 Burke AT, Maggs JE, Morales GJ. Experimental study of classical heat transport in a magnetized plasma. [Journal Paper] Physics of Plasmas, vol.7, no.2, Feb. 2000, pp. 544-53. Study of Fluctuations that spontaneously develop in a skin depth size temperature filament, A.T. Burke, J. Maggs, G. Morales, Spontaneous Fluctuations of a Temperature Filament in a Magnetized Plasma, Phys. Rev. Lett., 84, 1451 (2000) Penano JR, Morales GJ, Maggs JE. Drift-Alfvén fluctuations associated with a narrow pressure striation. [Journal Paper] Physics of Plasmas, vol.7, no.1, Jan. 2000, pp. 144-57 Observations of kinetic and inertial shear Alfvén waves: D. Leneman, W. Gekelman, and J. Maggs, Laboratory Observations of Shear Alfvén Waves Launched from a Small Source, Phys. Rev. Letters, 82, 2673-2676 (1999). A review paper on Alfvén wave experiments over the years: W. Gekelman, Review of laboratory experiments on Alfvén waves and their relationship to space observations, Jour. Geophys. Res., 104,14,14,417-14,435 (1999) S. Vincena, W. Gekelman, 3D Observations of Electromagnetic Ion Cyclotron Wave Propagation in a Laboratory Plasma Column,Ú IEEE Transactions on Plasma Science, 27 (1) ,1999 An atomic model for a helium d.c. discharge using the Los Alamos suite of atomic physics codes was used to calculate the density and temperature in the LAPD device. The results were compared with experimental data in: J. Abdalllah Jr., N. Palmer, W. Gekelman, J. Maggs, and R.E.H. Clark, Time-dependent kinetics model for a helium discharge plasma, J. Phys. B: At. Mol. Opt. Phys. 32 1001-1008 (1999) Morales GJ, Maggs JE, Burke AT, Penano JR. Alfvenic turbulence associated with density and temperature filaments. [Conference Paper; Journal Paper] IOP Publishing. Plasma Physics and Controlled Fusion, vol.41, suppl.3A, March 1999, pp. A519-29. UK. Using military flight simulation techniques to view large plasma physics data sets: C. Mitchell, W. Gekelman, Real-time physics data-visualization system using Performer, Computers in Physics 12, 371 Jul/Aug 1998 Measurement of the electric field of whistler and lower hybrid waves at a density striation: S. Rosenberg, W.Gekelman, Electric Field Measurements of directly converted lower hybrid waves at a density striation, Geophys. Res. Letts., 25, 865 (1998) A.T. Burke, J.E. Maggs and G.J. Morales, Observation of Simultaneous Axial and Transverse Classical Heat Transport in a Magnetized Plasma, Phys. Rev. Letters, 81, 3659 (1998) A thorough review of the properties of Alfvén wave cones in the context of space plasmas illustrating their three dimensional propagation and interference effects has been published and may be downloaded. W. Gekelman, S. Vincena, D. Leneman, J. Maggs, Laboratory Experiments on shear Alfvén waves and their relationship to space plasmas, Jour. of Geophys. Res., 102, 7225-7236 (1997) Morales GJ, Maggs JE. Structure of kinetic Alfven waves with small transverse scale length, Physics of Plasmas, vol.4, no.11, Nov. 1997, pp. 4118-25 Maggs JE, Morales GJ, Gekelman W., Laboratory studies of field-aligned density striations and their relationship to auroral processes, Physics of Plasmas, vol.4, no.5, pt.2, May 1997, pp. 1881-8 Penano JR, Morales GJ, Maggs JE. Properties of drift waves in a filamentary density depletion, Physics of Plasmas, vol.4, no.3, March 1997, pp. 555-65 The three dimensional current structure of Alfvén wave cones is presented in: W. Gekelman, S. Vincena, D. Leneman, Experimental Observations of Shear Alfvén waves generated by narrow current channels, Plasma Phys. and Control. Fusion, 39, A101-A112 (1997) Maggs JE, Morales GJ. Fluctuations associated with a filamentary density depletion, Physics of Plasmas, vol.4, no.2, Feb. 1997, pp. 290-9 Maggs JE, Morales GJ. Magnetic fluctuations associated with field-aligned striations. [Journal Paper] Geophysical Research Letters, vol.23, no.6, 15 March 1996, pp. 633-6. Publisher: American Geophys. Union, USA. Laboratory study of the interaction of a whistler wave with a density striation showing its direct conversion to lower-hybrid waves: J.F. Bamber, J.E. Maggs, and W. Gekelman, Whistler Wave Interaction with a Density Striation: A Laboratory Investigation of an Auroral Process, Jour. of Geophys. Res., 100, 23795-23810 (1995) Morales GJ, Loritsch RS, Maggs JE. Properties of Alfven waves with transverse scale on the order of the skin-depth. [Conference Paper] 1994 International Conference on Plasma Physics. Joint Conference of the 10th Kiev International Conference on Plasma Theory, 10th International Congress on Waves and Instabilities in Plasmas, Combined with 6th Latin American Workshop on Plasma Physics. Proceedings . INPE. Part vol.3, 1994, pp. 189-92 vol.3. Sao Jose des Campos, Brazil. Morales GJ, Loritsch RS, Maggs JE., Structure of Alfven waves at the skin-depth scale, Physics of Plasmas, vol.1, no.12, Dec. 1994, pp. 3765-74. W. Gekelman, D. Leneman, J. Maggs, S. Vincena, Experimental Observation of Alfven wave cones, Phys. Plasmas, 1, 3775 (1994). Alfven waves geberated by narrow, fluctuating current channels. Srivastava S, Morales GJ, Maggs JE., Nonlinear Landau damping of resonantly excited fields in nonuniform plasmas, Physics of Plasmas, vol.1, no.3, March 1994, pp. 567-78.
Presentations: APS-DPP distinguished lecture by Walter Gekelman. Given in 1999-2000 |
