Search Results - "Vincena, S"

Laboratory measurements of the physics of auroral electron acceleration by Alfvén waves by Schroeder, J. W. R., Howes, G. G., Kletzing, C. A., Skiff, F., Carter, T. A., Vincena, S., Dorfman, S.

“…While the aurora has attracted attention for millennia, important questions remain unanswered. Foremost is how auroral electrons are accelerated before…”
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Observation of collisionless shocks in a large current-free laboratory plasma by Niemann, C., Gekelman, W., Constantin, C. G., Everson, E. T., Schaeffer, D. B., Bondarenko, A. S., Clark, S. E., Winske, D., Vincena, S., Van Compernolle, B., Pribyl, P.

“…We report the first measurements of the formation and structure of a magnetized collisionless shock by a laser‐driven magnetic piston in a current‐free…”
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Spiky electric and magnetic field structures in flux rope experiments by Gekelman, W., Tang, S. W., DeHaas, T., Vincena, S., Pribyl, P., Sydora, R.

“…Magnetic flux ropes are structures that are common in the corona of the sun and presumably all stars. They can be thought of as the building blocks of solar…”
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Pulsating Magnetic Reconnection Driven by Three-Dimensional Flux-Rope Interactions by Gekelman, W, De Haas, T, Daughton, W, Van Compernolle, B, Intrator, T, Vincena, S

“…The dynamics of magnetic reconnection is investigated in a laboratory experiment consisting of two magnetic flux ropes, with currents slightly above the…”
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Nonlocal Ohms Law, Plasma Resistivity, and Reconnection During Collisions of Magnetic Flux Ropes by Gekelman, W., DeHaas, T., Pribyl, P., Vincena, S., Compernolle, B. Van, Sydora, R., Tripathi, S. K. P.

“…The plasma resistivity was evaluated in an experiment on the collision of two magnetic flux ropes. Whenever the ropes collide, some magnetic energy is lost as…”
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Collisionless momentum transfer in space and astrophysical explosions by Bondarenko, A. S., Schaeffer, D. B., Everson, E. T., Clark, S. E., Lee, B. R., Constantin, C. G., Vincena, S., Van Compernolle, B., Tripathi, S. K. P., Winske, D., Niemann, C.

“…Larmor coupling is a collisionless momentum exchange mechanism believed to occur in various astrophysical and space-plasma environments. The phenomenon is now…”
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Modification of turbulent transport with continuous variation of flow shear in the large plasma device by Schaffner, D A, Carter, T A, Rossi, G D, Guice, D S, Maggs, J E, Vincena, S, Friedman, B

“…Continuous control over azimuthal flow and shear in the edge of the Large Plasma Device (LAPD) has been achieved using a biasable limiter which has allowed a…”
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Laboratory realization of an ion-ion hybrid Alfvén wave resonator by Vincena, S. T., Farmer, W. A., Maggs, J. E., Morales, G. J.

“…In a magnetized plasma with two ion species, shear Alfvén waves (or guided electromagnetic ion cyclotron waves) have zero parallel group velocity and…”
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Experimental study of the dynamics of a thin current sheet by Gekelman, W, DeHaas, T, Van Compernolle, B, Daughton, W, Pribyl, P, Vincena, S, Hong, D

“…Many plasmas in natural settings or in laboratory experiments carry currents. In magnetized plasmas the currents can be narrow field-aligned filaments as small…”
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Control of gradient-driven instabilities using shear Alfvén beat waves by Auerbach, D W, Carter, T A, Vincena, S, Popovich, P

“…A new technique for manipulation and control of gradient-driven instabilities through nonlinear interaction with Alfvén waves in a laboratory plasma is…”
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Measurements of inertial limit Alfvén wave dispersion for finite perpendicular wave number by Kletzing, C A, Thuecks, D J, Skiff, F, Bounds, S R, Vincena, S

“…Measurements of the dispersion relation for shear Alfvén waves as a function of perpendicular wave number are reported for the inertial regime for which…”
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Correlation analysis of waves above a capacitive plasma applicator by Gekelman, W, Barnes, M, Vincena, S, Pribyl, P

“…Capacitively coupled plasma glow discharges have been extensively used for materials processing in numerous industrial applications. Considerable research has…”
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Laboratory experiments on Alfvén waves caused by rapidly expanding plasmas and their relationship to space phenomena by Gekelman, W., Van Zeeland, M., Vincena, S., Pribyl, P.

“…There are many situations which naturally occur in space (coronal mass ejections, supernovas) or are man‐made (upper atmospheric detonations) in which a dense…”
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Debye-scale solitary structures measured in a beam-plasma laboratory experiment by Lefebvre, B., Chen, L.-J., Gekelman, W., Kintner, P., Pickett, J., Pribyl, P., Vincena, S.

“…Solitary electrostatic pulses have been observed in numerous places of the magnetosphere such as the vicinity of reconnection current sheets, shocks or auroral…”
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Collisionless interaction of an energetic laser produced plasma with a large magnetoplasma by Constantin, C., Gekelman, W., Pribyl, P., Everson, E., Schaeffer, D., Kugland, N., Presura, R., Neff, S., Plechaty, C., Vincena, S., Collette, A., Tripathi, S., Muniz, M. Villagran, Niemann, C.

“…We have commissioned a high-energy glass-laser at the Large Plasma Device (LAPD) to study the interaction of a dense laser-produced plasma with a large (17 m)…”
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Production of Alfvén waves by a rapidly expanding dense plasma by VanZeeland, M, Gekelman, W, Vincena, S, Dimonte, G

“…The expansion of a dense (initially, n(lpp)/n(0)>>1) laser-produced plasma into an ambient magnetized plasma ( n(0) = 2 x 10(12) cm(-3)) capable of supporting…”
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Magnetic field line reconnection in the current systems of flux ropes and Alfvén waves by Gekelman, W, Lawrence, E, Collette, A, Vincena, S, Compernolle, B Van, Pribyl, P, Berger, M, Campbell, J

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Lithium ion sources for investigations of fast ion transport in magnetized plasmas by Zhang, Y, Boehmer, H, Heidbrink, W W, McWilliams, R, Leneman, D, Vincena, S

“…In order to study the interaction of ions of intermediate energies with plasma fluctuations, two plasma immersible lithium ion sources, based on solid-state…”
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Visualizing Three-Dimensional Reconnection in a Colliding Laser Plasma Experiment by Gekelman, W., Vincena, S., Collette, A.

“…Most processes in nature where magnetic field line reconnection occurs are thought to be 3-D and time dependent. These include solar flares and sites in the…”
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Cross-field structure generation approaching dissipation scales via three-wave coupling of shear Alfvén waves and kink waves by Vincena, S., Tripathi, S.K.P., Gekelman, W., Pribyl, P., Sydora, R.

“…Both kink waves (arising from unstable magnetic flux ropes) and shear Alfvén waves occur simultaneously in plasmas ranging from solar prominences, the solar…”
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