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Experimental study of shock waves from the interaction of a supersonic plasma jet with an ambient gas |
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| Authors: | F. Suzuki-Vidal S. V. Lebedev M. Bocchi M. Krishnan G. Swadling G. Burdiak S. N. Bland P. de Grouchy G. N. Hall A. J. Harvey-Thompson E. Khoory L. Pickworth J. Skidmore J. P. Chittenden K. Wilson-Elliot R. Madden A. Ciardi |
| Affiliation: | 1. Blackett Laboratory, Imperial College London, Prince Consort Road, London, SW7 2BW, UK 2. Alameda Applied Sciences Corporation, San Leandro, CA, 94577, USA 4. Sandia National Laboratories, Albuquerque, NM, 87104, USA 3. LERMA, Universit?? Pierre et Marie Curie, Observatoire de Paris and ??cole Normale Sup??rieure, UMR 8112 CNRS, 75231, Paris, France |
| Abstract: | Preliminary results of the interaction of a supersonic, radiatively cooled plasma jet with an ambient gas are presented. The experimental setup consists of a radial foil, a mum-thick aluminium disc held between two concentric electrodes and subjected to a 1.4 MA, 250-ns current pulse from the MAGPIE generator. The plasma flow, with typical velocities of ~70?C90?km/s, is produced by the J?× B force acting on the plasma ablated from the foil. A jet is formed from the convergence of this ablated plasma on the axis of the system. A new setup allows the jet to interact with an argon ambient (particle density N ~1016-17 cm?3) from a supersonic gas nozzle (Mach ~9). First results are characterised by the presence of several (previously unseen) shock structures, which are formed from the interaction of the jet with the argon ambient. |
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