Zobrazeno 1 - 10
of 724
pro vyhledávání: '"Lebedev, S V"'
Autor:
Valenzuela-Villaseca, V., Suttle, L. G., Suzuki-Vidal, F., Halliday, J. W. D., Russell, D. R., Merlini, S., Tubman, E. R., Hare, J. D., Chittenden, J. P., Koepke, M. E., Blackman, E. G., Lebedev, S. V.
We present a detailed characterization of the structure and evolution of differentially rotating plasmas driven on the MAGPIE pulsed-power generator (1.4 MA peak current, 240 ns rise-time). The experiments were designed to simulate physics relevant t
Externí odkaz:
http://arxiv.org/abs/2403.20321
Autor:
Datta, R, Chandler, K, Myers, C E, Chittenden, J P, Crilly, A J, Aragon, C, Ampleford, D J, Banasek, J T, Edens, A, Fox, W R, Hansen, S B, Harding, E C, Jennings, C A, Ji, H, Kuranz, C C, Lebedev, S V, Looker, Q, Patel, S G, Porwitzky, A J, Shipley, G A, Uzdensky, D A, Yager-Elorriaga, D A, Hare, J D
We present evidence for strong radiative cooling in a pulsed-power-driven magnetic reconnection experiment. Two aluminum exploding wire arrays, driven by a 20 MA peak current, 300 ns rise time pulse from the Z machine (Sandia National Laboratories),
Externí odkaz:
http://arxiv.org/abs/2401.17923
Autor:
Datta, R., Chandler, K., Myers, C. E., Chittenden, J. P., Crilly, A. J., Aragon, C., Ampleford, D. J., Banasek, J. T., Edens, A., Fox, W. R., Hansen, S. B., Harding, E. C., Jennings, C. A., Ji, H., Kuranz, C. C., Lebedev, S. V., Looker, Q., Patel, S. G., Porwitzky, A., Shipley, G. A., Uzdensky, D. A., Yager-Elorriaga, D. A., Hare, J. D.
We present results from the first experimental study of strongly radiatively-cooled magnetic reconnection. Two exploding aluminum wire arrays, driven simultaneously by the Z machine ($I_{max} = 20 \, \text{MA}$, $t_{\text{rise}} = 300 \, \text{ns}$),
Externí odkaz:
http://arxiv.org/abs/2401.04643
Autor:
Valenzuela-Villaseca, V., Suttle, L. G., Suzuki-Vidal, F., Halliday, J. W. D., Russell, D. R., Merlini, S., Tubman, E. R., Hare, J. D., Chittenden, J. P., Koepke, M. E., Blackman, E. G., Lebedev, S. V.
Recent pulsed-power experiments have demonstrated the formation of astrophysically-relevant, differentially rotating plasmas [1]. Key features of the plasma flows are the discovery of a quasi-Keplerian rotation curve, the launching of highly-collimat
Externí odkaz:
http://arxiv.org/abs/2312.02346
Autor:
Markwick, R. N., Frank, A., Blackman, E. G., Carroll-Nellenback, J., Lebedev, S. V., Russell, D. R., Halliday, J. W. D., Suttle, L. G., Hartigan, P. M.
We report on the results of a simulation based study of colliding magnetized plasma flows. Our set-up mimics pulsed power laboratory astrophysical experiments but, with an appropriate frame change, are relevant to astrophysical jets with internal vel
Externí odkaz:
http://arxiv.org/abs/2311.07717
Autor:
Merlini, S., Hare, J. D., Burdiak, G. C., Halliday, J. W. D., Ciardi, A., Chittenden, J. P., Clayson, T., Crilly, A. J., Eardley, S. J., Marrow, K. E., Russell, D. R., Smith, R. A., Stuart, N., Suttle, L. G., Tubman, E. R., Valenzuela-Villaseca, V., Varnish, T. W. O., Lebedev, S. V.
Publikováno v:
Phys. Plasmas 30, 092102 (2023)
We study the structure of reverse shocks formed by the collision of supersonic, magnetised plasma flows driven by an inverse (or exploding) wire array with a planar conducting obstacle. We observe that the structure of these reverse shocks varies dra
Externí odkaz:
http://arxiv.org/abs/2306.01847
Autor:
Markwick, R. N., Frank, A., Carroll-Nellenback, J., Blackman, E. G., Hartigan, P. M., Lebedev, S. V., Russel, D. R., Halliday, J. W. D., Suttle, L. G.
Publikováno v:
Physics of Plasmas, Volume 29, Issue 10, id.102901, 14 pp (October 2022)
Supersonic interacting flows occurring in phenomena such as protostellar jets give rise to strong shocks, and have been demonstrated in several laboratory experiments. To study such colliding flows, we use the AstroBEAR AMR code to conduct hydrodynam
Externí odkaz:
http://arxiv.org/abs/2212.05631
We present a technique to measure the time-resolved velocity and ion sound speed in magnetized, supersonic high-energy-density plasmas. We place an inductive (`b-dot') probe in a supersonic pulsed-power-driven plasma flow and measure the magnetic fie
Externí odkaz:
http://arxiv.org/abs/2205.06082
Autor:
Valenzuela-Villaseca, V., Suttle, L. G., Suzuki-Vidal, F., Halliday, J. W. D., Merlini, S., Russell, D. R., Tubman, E. R., Hare, J. D., Chittenden, J. P., Koepke, M. E., Blackman, E. G., Lebedev, S. V.
We present results from pulsed-power driven differentially rotating plasma experiments designed to simulate physics relevant to astrophysical disks and jets. In these experiments, angular momentum is injected by the ram pressure of the ablation flows
Externí odkaz:
http://arxiv.org/abs/2201.10339
Autor:
Russell, D. R., Burdiak, G. C., Carroll-Nellenback, J. J., Halliday, J. W. D., Hare, J. D., Merlini, S., Suttle, L. G., Valenzuela-Villaseca, V., Eardley, S. J., Fullalove, J. A., Rowland, G. C., Smith, R. A., Frank, A., Hartigan, P., Velikovich, A. L., Lebedev, S. V.
We present a study of perpendicular subcritical shocks in a collisional laboratory plasma. Shocks are produced by placing obstacles into the super-magnetosonic outflow from an inverse wire array z-pinch. We demonstrate the existence of subcritical sh
Externí odkaz:
http://arxiv.org/abs/2201.09039