Zobrazeno 1 - 10
of 273
pro vyhledávání: '"Halliday, J. W."'
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:
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
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
Autor:
Strucka, J., Halliday, J. W. D., Gheorghiu, T., Horton, H., Krawczyk, B., Moloney, P., Parker, S., Rowland, G., Schwartz, N., Stanislaus, S., Theocharous, S., Wilson, C., Zhao, Z., Shelkovenko, T. A., Pikuz, S. A., Bland, S. N.
Publikováno v:
Matter Radiat. Extremes 7, 016901 (2022)
We describe the design and x-ray emission properties (temporal, spatial, and spectral) of Dry Pinch I, a portable X-pinch driver developed at Imperial College London. Dry Pinch I is a direct capacitor discharge device, 300x300x700 mm3 in size and app
Externí odkaz:
http://arxiv.org/abs/2112.11551
Autor:
Hare, J. D., Burdiak, G. C., Merlini, S., Chittenden, J. P., Clayson, T., Crilly, A. J., Halliday, J. W. D., Russell, D. R., Smith, R. A., Stuart, N., Suttle, L. G., Lebedev, S. V.
We report on a recently developed laser-probing diagnostic which allows direct measurements of ray-deflection angles in one axis, whilst retaining imaging capabilities in the other axis. This allows us to measure the spectrum of angular deflections f
Externí odkaz:
http://arxiv.org/abs/2007.04682
Autor:
Suttle, L G, Burdiak, G C, Cheung, C L, Clayson, T, Halliday, J W D, Hare, J D, Rusli, S, Russell, D, Tubman, E, Ciardi, A, Loureiro, N F, Li, J, Frank, A, Lebedev, S V
A supersonic flow of magnetized plasma is produced by the application of a 1 MA-peak, 500 ns current pulse to a cylindrical arrangement of parallel wires, known as an inverse wire array. The plasma flow is produced by the JxB acceleration of the abla
Externí odkaz:
http://arxiv.org/abs/1907.09447