Publications
225 results found
Lebedev SV, Ampleford D, Ciardi A, et al., 2004, Jet deflection via crosswinds: Laboratory astrophysical studies, ASTROPHYSICAL JOURNAL, Vol: 616, Pages: 988-997, ISSN: 0004-637X
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- Citations: 74
Garasi CJ, Deeney C, Jones B, et al., 2004, Three-dimensional ALEGRA-HEDP simulations of modulated wire arrays on MAGPIE, ISSN: 0730-9244
Evidence for non-uniform mass ablation has been observed on various wire array experiments. Non-uniform wire ablation leads to non-uniform wire breakup, providing the means for wire array material to be left behind the implosion of the bulk array mass. Mass ablation variation along the length of the wire vary periodically, with a wave-length of ∼250 μm (Al) and ∼100 μm (W). The mechanism which seeds this perturbation is currently not well understood however attempts have been made to chemically etch wires (axially modulating the wire radius) after they are manufactured to seed a perturbation that might dominate the subsequent wire array dynamics. We present three-dimensional simulations of modulated wire experiments performed on the MAGPIE accelerator. The simulations are used to provide insight into the time evolution of low wire number modulated wire arrays, examining how wire-to-wire modulation correlation and anti-correlation impacts non-uniform wire ablation and array implosion. Comparisons will be made with data obtained from experiments with varying wire modulation wavelength.
Lebedev SV, Ampleford DJ, Bland SN, et al., 2004, Wire array Z-pinch experiments at Imperial College, Pages: 730-734
The physics of plasma formation in wire array Z-pinches and effects of the radial redistribution of mass by the precursor plasma flow were studied in experiments on the Magpie generator (1MA, 250ns). Scaling of the ablation rate of the wires with global magnetic field and wire number, and importance of the material left behind by the implosion are discussed.
Lebedev SV, Ampleford DJ, Bland SN, et al., 2004, Implosion dynamics of wire array Z-pinches: experiments at Imperial College, NUCLEAR FUSION, Vol: 44, Pages: S215-S220, ISSN: 0029-5515
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- Citations: 40
Chittenden JP, Lebedev SV, Jennings CA, et al., 2004, X-ray generation mechanisms in three-dimensional simulations of wire array Z-pinches, 31st European-Physical-Society Conference on Plasma Physics, Publisher: IOP PUBLISHING LTD, Pages: B457-B476, ISSN: 0741-3335
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- Citations: 183
Jones B, Deeney C, McKenney JL, et al., 2004, Chemically etched modulation in wire radius for wire array Z-pinch perturbation studies, REVIEW OF SCIENTIFIC INSTRUMENTS, Vol: 75, Pages: 5030-5034, ISSN: 0034-6748
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- Citations: 7
Bland SN, Lebedev SV, Chittenden JP, et al., 2004, Use of linear wire array <i>Z</i> pinches to examine plasma dynamics in high magnetic fields, PHYSICS OF PLASMAS, Vol: 11, Pages: 4911-4921, ISSN: 1070-664X
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- Citations: 26
Shelkovenko TA, Pikuz SA, Hammer DA, et al., 2004, Use of spherically bent crystals to diagnose wire array <i>z</i> pinches, 15th Topical Conference on High-Temperature Plasma Diagnostics, Publisher: AMER INST PHYSICS, Pages: 3681-3683, ISSN: 0034-6748
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- Citations: 18
Bland SN, Ampleford DJ, Bott SC, et al., 2004, Extreme ultraviolet imaging of wire array <i>z</i>-pinch experiments, 15th Topical Conference on High-Temperature Plasma Diagnostics, Publisher: AMER INST PHYSICS, Pages: 3941-3943, ISSN: 0034-6748
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- Citations: 33
Bott SC, Palmer JBA, Ampleford DJ, et al., 2004, Use of <i>X</i>-pinches of diagnose behavior of low density CH foams on axis of wire array <i>Z</i>-pinches, 15th Topical Conference on High-Temperature Plasma Diagnostics, Publisher: AMER INST PHYSICS, Pages: 3944-3946, ISSN: 0034-6748
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- Citations: 11
Ciardi A, Lebedev SV, Ampleford DJ, et al., 2004, Laboratory astrophysics: 2D and 3D numerical modeling of jets and flows produced in wire array experiments, Melville, Conference on plasmas in the laboratory and in the universe, Como, Italy, 16 - 19 September 2003, Publisher: American Institute of Physics, Pages: 447-450
Ciardi A, Lebedev SV, Ampleford DJ, et al., 2004, Laboratory astrophysics: 2D and 3D numerical modeling of jets and flows produced in wire array experiments, Melville, Conference on plasmas in the laboratory and in the universe, Como, Italy, 16 - 19 September 2003, Publisher: American Institute of Physics, Pages: 447-450
Ampleford DJ, Lebedev SV, Ciardi A, et al., 2004, Laboratory modeling of radiatively cooled jets using conical wire array Z-pinches, Melville, Conference on plasmas in the laboratory and in the universe, Como, Italy, 16 - 19 September 2003, Publisher: American Institute of Physics, Pages: 443-446
Bland SN, Lebedev SV, Chittenden JP, et al., 2003, Nested wire array <i>Z</i>-pinch experiments operating in the current transfer mode, PHYSICS OF PLASMAS, Vol: 10, Pages: 1100-1112, ISSN: 1070-664X
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- Citations: 53
Gardiner TA, Frank A, Blackman EG, et al., 2003, MHD models and laboratory experiments of jets, ASTROPHYSICS AND SPACE SCIENCE, Vol: 287, Pages: 69-74, ISSN: 0004-640X
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- Citations: 3
Chittenden JP, Dunne M, Zepf M, et al., 2002, Indirect-drive inertial confinement fusion using highly supersonic, radiatively cooled, plasma slugs, PHYSICAL REVIEW LETTERS, Vol: 88, ISSN: 0031-9007
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- Citations: 5
Ciardi A, Lebedev SV, Chittenden JP, et al., 2002, Modeling of supersonic jet formation in conical wire array Z-pinches, Conference on Matter in Super-Intense Laser Fields: Short Pulse Superstrong Laser-Plasma Interactions, Publisher: CAMBRIDGE UNIV PRESS, Pages: 255-261, ISSN: 0263-0346
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- Citations: 36
Lebedev SV, Beg FN, Bland SN, et al., 2002, Snowplow-like behavior in the implosion phase of wire array Z pinches, 43rd Annual Meeting of the Division of Plasma Physics of the American-Physical-Society, Publisher: AIP Publishing, Pages: 2293-2301, ISSN: 1070-664X
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- Citations: 111
Beg FN, Lebedev SV, Bland SN, et al., 2002, The dynamics of single and nested nickel wire array <i>Z</i> pinch implosions, IEEE TRANSACTIONS ON PLASMA SCIENCE, Vol: 30, Pages: 552-558, ISSN: 0093-3813
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- Citations: 21
Lebedev SV, Chittenden JP, Beg FN, et al., 2002, Laboratory astrophysics and collimated stellar outflows: The production of radiatively cooled hypersonic plasma jets, ASTROPHYSICAL JOURNAL, Vol: 564, Pages: 113-119, ISSN: 0004-637X
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- Citations: 166
Beg FN, Lebedev SV, Bland SN, et al., 2002, The effect of current prepulse on wire array Z-pinch implosions, PHYSICS OF PLASMAS, Vol: 9, Pages: 375-377, ISSN: 1070-664X
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- Citations: 31
Ampleford DJ, Lebedev SV, Bland SN, et al., 2002, Deflection of supersonic plasma jets by ionised hydrocarbon targets, Melville, 5th international conference on dense z-pinches, Albuquerque, New Mexico, 23 - 28 June 2002, Publisher: American Institute of Physics, Pages: 321-324
Chittenden JP, Dunne AM, Zepf M, et al., 2002, The production of hypersonic, radiatively cooled plasma projectiles of extremely high energy density in imploding Z-pinches, Melville, 5th international conference on dense z-pinches, Albuquerque, New Mexico, 23 - 28 June 2002, Publisher: American Institute of Physics, Pages: 291-294
Haines MG, Lebedev SV, Chittenden JP, et al., 2002, Why do wire-array Z-pinches give such a sharp and efficient X-ray pulse?, Melville, 5th international conference on dense z-pinches, Albuquerque, New Mexico, 23 - 28 June 2002, Publisher: American Institute of Physics, Pages: 345-349
Bland SN, Lebedev SV, Beg F, et al., 2002, The effect of array configuration on current distribution in a wire array Z-pinch, Melville, 5th international conference on dense z-pinches, Albuquerque, New Mexico, 23 - 28 June 2002, Publisher: American Institute of Physics, Pages: 83-86
Ampleford DJ, Lebedev SV, Bland SN, et al., 2002, Deflection of supersonic plasma jets by ionised hydrocarbon targets, Melville, 5th international conference on dense z-pinches, Albuquerque, New Mexico, 23 - 28 June 2002, Publisher: American Institute of Physics, Pages: 321-324
Bland SN, Lebedev SV, Chittenden JP, et al., 2002, Implosion dynamics and X-ray characteristics of nested wire array Z- pinches, Melville, 5th International Conference on Dense Z-Pinches, Albuquerque, New Mexico, 23 - 28 June 2002, Publisher: American Institute of Physics, Pages: 75-78
Haines MG, Lebedev SV, Chittenden JP, et al., 2002, Why do wire-array Z-pinches give such a sharp and efficient X-ray pulse?, Melville, 5th international conference on dense z-pinches, Albuquerque, New Mexico, 23 - 28 June 2002, Publisher: American Institute of Physics, Pages: 345-349
Palmer JBA, Lebedev SV, Bland SN, et al., 2002, The effect of precursor plasma flow on foam targets in wire array Z-pinch experiments, 5th International Conference on Dense Z-Pinches, Publisher: AMER INST PHYSICS, Pages: 79-82, ISSN: 0094-243X
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- Citations: 2
Lebedev SV, Chittenden JP, Bland SN, et al., 2002, Effect of discrete wires on the implosion dynamics of wire array Z- pinches, Melville, 5th international conference on dense z-pinches, Albuquerque, New Mexico, 23 - 28 June 2002, Publisher: American Institute of Physics, Pages: 65-70
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