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• Conference paper
  Lebedev SV, Ciardi A, Ampleford DJ, Bland SN, Bott SC, Chittenden JP, Hall GN, Rapley J, Jennings C, Sherlock M, Frank A, Blackman EGet al., 2005,

  Production of radiatively cooled hypersonic plasma jets and links to astrophysical jets

  , 32nd European-Physical-Society Conference on Plasma Physics, Publisher: IOP PUBLISHING LTD, Pages: B465-B479, ISSN: 0741-3335
  • Author Web Link
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  • Citations: 54
• Journal article
  Jones B, Deeney C, McKenney JL, Garasi CJ, Mehlhorn TA, Robinson AC, Wunsch SE, Bland SN, Lebedev SV, Chittenden JP, Bott SC, Ampleford DJ, Palmer JBA, Rapley J, Hall GN, Oliver BVet al., 2005,

  Study of three-dimensional structure in wire-array <i>z</i> pinches by controlled seeding of axial modulations in wire radius -: art. no. 225001

  , PHYSICAL REVIEW LETTERS, Vol: 95, ISSN: 0031-9007
  • Author Web Link
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  • Citations: 40
• Journal article
  Siviour CR, Walley SM, Proud WG, Field JEet al., 2005,

  Mechanical properties of SnPb and lead-free solders at high rates of strain

  , JOURNAL OF PHYSICS D-APPLIED PHYSICS, Vol: 38, Pages: 4131-4139, ISSN: 0022-3727
  • Author Web Link
  • Cite
  • Citations: 64
• Journal article
  Borg JP, Chapman DJ, Tsembelis K, Proud WG, Cogar JRet al., 2005,

  Dynamic compaction of porous silica powder

  , JOURNAL OF APPLIED PHYSICS, Vol: 98, ISSN: 0021-8979
  • Author Web Link
  • Cite
  • Citations: 27
• Journal article
  Bland SN, Lebedev SV, Chittenden JP, Ampleford DJ, Bott SC, Gómez JA, Haines MG, Hall GN, Hammer DA, Mitchell IH, Palmer JBAet al., 2005,

  Effect of radial-electric-field polarity on wire-array Z-pinch dynamics -: art. no. 135001

  , PHYSICAL REVIEW LETTERS, Vol: 95, ISSN: 0031-9007
  • Author Web Link
  • Cite
  • Citations: 25
• Journal article
  Kerr FM, Rose SJ, Wark JS, Keenan FPet al., 2005,

  An analytic geometry-variant approach to line ratio enhancement above the optically thin limit

  , ASTROPHYSICAL JOURNAL, Vol: 629, Pages: 1091-1101, ISSN: 0004-637X
  • Author Web Link
  • Cite
  • Citations: 13
• Journal article
  Lebedev SV, Ciardi A, Ampleford DJ, Bland SN, Bott SC, Chittenden JP, Hall GN, Rapley J, Jennings CA, Frank A, Blackman EG, Lery Tet al., 2005,

  Magnetic tower outflows from a radial wire array Z-pinch

  , MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY, Vol: 361, Pages: 97-108, ISSN: 0035-8711
  • Author Web Link
  • Cite
  • Citations: 131
• Journal article
  Chapman DJ, Radford DD, Reynolds M, Church PDet al., 2005,

  Shock induced void nucleation during Taylor impact

  , International Journal of Fracture, Vol: 134, Pages: 41-57, ISSN: 0376-9429
  • Publisher Web Link
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• Conference paper
  Frank A, Blackman EG, Cunningham A, Lebedev SV, Ampleford D, Ciardi A, Bland SN, Chittenden JP, Haines MGet al., 2005,

  A HED laboratory astrophysics testbed comes of age: JET deflection via cross winds

  , 5th International Conference on High Energy Density Laboratory Astrophysics, Publisher: SPRINGER, Pages: 107-114, ISSN: 0004-640X
  • Author Web Link
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  • Citations: 5
• Conference paper
  Ciardi A, Lebedev SV, Chittenden JP, Ampleford DJ, Bland SN, Bott BS, Rapley Jet al., 2005,

  Modeling magnetic tower jets in the laboratory

  , 5th International Conference on High Energy Density Laboratory Astrophysics, Publisher: SPRINGER, Pages: 277-286, ISSN: 0004-640X
  • Author Web Link
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  • Citations: 15
• Conference paper
  Van Hoof PAM, Foord ME, Heeter RF, Bailey JE, Chung HK, Cuneo ME, Goldstein WH, Jonauskas V, Keenan FP, Kisielius R, Liedahl DA, Ramsbottom C, Rose SJ, Springer PT, Thoe RSet al., 2005,

  Modeling X-ray photoionized plasmas produced at the Sandia Z-facility

  , 5th International Conference on High Energy Density Laboratory Astrophysics, Publisher: SPRINGER, Pages: 147-153, ISSN: 0004-640X
  • Author Web Link
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  • Citations: 4
• Conference paper
  Kerr FM, Gouveia A, Lee RW, Patel PK, Renner O, Rose SJ, Scott HA, Wark JSet al., 2005,

  X-ray line transfer in plasmas with large velocity gradients

  , 5th International Conference on High Energy Density Laboratory Astrophysics, Publisher: SPRINGER, Pages: 171-176, ISSN: 0004-640X
  • Author Web Link
  • Cite
  • Citations: 1
• Conference paper
  Ampleford DJ, Lebedev SV, Ciardi A, Bland SN, Bott SC, Chittenden JP, Hall G, Jennings CA, Armitage J, Blyth G, Christie S, Rutland Let al., 2005,

  Formation of working surfaces in radiatively cooled laboratory jets

  , 5th International Conference on High Energy Density Laboratory Astrophysics, Publisher: SPRINGER, Pages: 241-246, ISSN: 0004-640X
  • Author Web Link
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  • Citations: 30
• Journal article
  Evans RG, Clark EL, Eagleton RT, Dunne AM, Edwards RD, Garbett WJ, Goldsack TJ, James S, Smith CC, Thomas BR, Clarke R, Neely DJ, Rose SJet al., 2005,

  Rapid heating of solid density material by a Petawatt laser

  , APPLIED PHYSICS LETTERS, Vol: 86, ISSN: 0003-6951
  • Author Web Link
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  • Citations: 64
• Conference paper
  Lebedev SV, Ampleford DJ, Bland SN, Bott SC, Chittenden JP, Goyer J, Jennings C, Haines MG, Hall GN, Hammer DA, Palmer JBA, Pikuz SA, Shelkovenko TA, Christoudias Tet al., 2005,

  Physics of wire array Z-pinch implosions: experiments at Imperial College

  , 12th International Congress on Plasma Physics (ICPP2004), Publisher: IOP PUBLISHING LTD, Pages: A91-A108, ISSN: 0741-3335
  • Author Web Link
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  • Citations: 89
• Journal article
  Jonauskas V, Bogdanovich P, Keenan FP, Foord ME, Heeter RF, Rose SJ, Ferland GJ, Kisielius R, van Hoof PAM, Norrington PHet al., 2005,

  Energy levels and transition probabilities for nitrogen-like Fe xx

  , ASTRONOMY & ASTROPHYSICS, Vol: 433, Pages: 745-U69, ISSN: 0004-6361
  • Author Web Link
  • Cite
  • Citations: 9
• Journal article
  Aggarwal KM, Keenan FP, Kisielius R, Norrington PH, King RE, Pert GJ, Rose SJet al., 2005,

  Radiative rates, collision strengths and effective collision strengths for transitions in Gd XXXVII

  , PHYSICA SCRIPTA, Vol: 71, Pages: 356-361, ISSN: 0031-8949
  • Author Web Link
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  • Citations: 6
• Journal article
  Jonauskas V, Reenan FP, Kisielius R, van Hoof PAM, Foord ME, Heeter RF, Rose SJ, Ferland GJ, Norrington PHet al., 2005,

  Relativistic analogues of nonrelativistic integrals in <i>R</i>-matrix calculations

  , JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, Vol: 38, Pages: L79-L85, ISSN: 0953-4075
  • Author Web Link
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  • Citations: 1
• Journal article
  Aggarwal KM, Keenan FP, Rose SJ, 2005,

  Electron impact excitation of A1 XIII: A relativistic approach

  , ASTRONOMY & ASTROPHYSICS, Vol: 432, Pages: 1151-1155, ISSN: 0004-6361
  • Author Web Link
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  • Citations: 2
• Conference paper
  Lebedev SV, Ampleford DJ, Bland SN, Bott S, Chittenden JP, Ciardi A, Jennings C, Haines MG, Hall G, Palmer JBA, Rapley Jet al., 2004,

  Plasma Dynamics in Radial Wire Array Z-Pinches

  , ISSN: 0730-9244

  We describe experiments on the MAGPIE facility (1MA, 250ns) with radial wire array z-pinches, in which the wires form a wheel-spoke configuration. Variation of the global magnetic field and the corresponding J×B force along the wires in this configuration allows studying an effect of the global magnetic field on the ablation rate of the wires. The knowledge of the scaling of the ablation rate is important for interpretation of the dynamics of wire array z-pinch plasma radiation sources. The parameters of the coronal plasma, which is pushed away from the wire cores by the J×B force, were measured using laser interferometry, X-ray and XUV imaging. The complete ablation of the wires near the inner electrode, where the ablation rate is the highest, triggers an axial acceleration of the plasma. This leads to formation of plasma configuration similar to a plasma focus and generation of the X-ray pulse. The results of the experiments with tungsten and aluminium radial wire arrays will be presented.

  • Abstract
  • Cite
• Journal article
  Lebedev SV, Ampleford D, Ciardi A, Bland SN, Chittenden JP, Haines MG, Frank A, Blackman EG, Cunningham Aet al., 2004,

  Jet deflection via crosswinds: Laboratory astrophysical studies

  , ASTROPHYSICAL JOURNAL, Vol: 616, Pages: 988-997, ISSN: 0004-637X
  • Author Web Link
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  • Citations: 74
• Conference paper
  Garasi CJ, Deeney C, Jones B, Mehlhorn TA, Robinson AC, Wunsch SE, Oliver BV, Ampleford D, Bland SN, Bott S, Lebedev SVet 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.

  • Abstract
  • Cite
  • Citations: 1
• Conference paper
  Lebedev SV, Ampleford DJ, Bland SN, Bott S, Chittenden JP, Jennings C, Haines MG, Rapley J, Palmer JBAet 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.

  • Abstract
  • Cite
  • Citations: 1
• Conference paper
  Chittenden JP, Lebedev SV, Jennings CA, Bland SN, Ciardi Aet 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
  • Author Web Link
  • Cite
  • Citations: 183
• Journal article
  Keenan F, Rose S, 2004,

  Spectroscopy of astrophysical plasmas in the laboratory

  , ASTRONOMY & GEOPHYSICS, Vol: 45, Pages: 18-21, ISSN: 1366-8781
  • Author Web Link
  • Cite
  • Citations: 2
• Journal article
  Lebedev SV, Ampleford DJ, Bland SN, Bott SC, Chittenden JP, Jennings C, Haines MG, Palmer JBA, Rapley Jet al., 2004,

  Implosion dynamics of wire array Z-pinches: experiments at Imperial College

  , NUCLEAR FUSION, Vol: 44, Pages: S215-S220, ISSN: 0029-5515
  • Author Web Link
  • Cite
  • Citations: 40
• Journal article
  McKeown K, Aggarwal KM, Keenan FP, Rose SJet al., 2004,

  Energy levels and radiative rates for Li-like Ar XVI and Fe XXIV

  , PHYSICA SCRIPTA, Vol: 70, Pages: 295-303, ISSN: 0031-8949
  • Author Web Link
  • Cite
  • Citations: 13
• Journal article
  Bland SN, Lebedev SV, Chittenden JP, Ampleford DJ, Tang Get 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
  • Author Web Link
  • Cite
  • Citations: 26
• Journal article
  Jones B, Deeney C, McKenney JL, Garrity JE, Lobley DK, Martin KL, Griego AE, Ramacciotti JP, Bland SN, Lebedev SV, Bott SC, Ampleford DJ, Palmer JBA, Rapley J, Hall Get 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
  • Author Web Link
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  • Citations: 7
• Journal article
  Czerski H, Greenaway MW, Proud WG, Field JEet al., 2004,

  β-δ phase transition during dropweight impact on cyclotetramethylene-tetranitroamine

  , JOURNAL OF APPLIED PHYSICS, Vol: 96, Pages: 4131-4134, ISSN: 0021-8979
  • Author Web Link
  • Cite
  • Citations: 27

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