Suppression of the Ablation Phase in Wire Array Z Pinches Using a Tailored Current Prepulse

被引：44

作者：

Harvey-Thompson, A. J. ^{[1
]}

Lebedev, S. V. ^{[1
]}

Burdiak, G. ^{[1
]}

Waisman, E. M. ^{[2
]}

Hall, G. N. ^{[1
]}

Suzuki-Vidal, F. ^{[1
]}

Bland, S. N. ^{[1
]}

Chittenden, J. P. ^{[1
]}

De Grouchy, P. ^{[1
]}

Khoory, E. ^{[1
]}

Pickworth, L. ^{[1
]}

Skidmore, J. ^{[1
]}

Swadling, G. ^{[1
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, London SW7 2BW, England

[2] Sandia Natl Labs, Albuquerque, NM 87185 USA

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 20期

基金：

英国工程与自然科学研究理事会;

关键词：

ENHANCEMENT; IMPLOSION; POWER;

D O I：

10.1103/PhysRevLett.106.205002

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

A new wire array configuration has been used to create thin shell-like implosions in a cylindrical array. The setup introduces a similar to 5 kA, similar to 25 ns current prepulse followed by a similar to 140 ns current-free interval before the application of the main (similar to 1 MA) current pulse. The prepulse volumetrically heats the wires which expand to similar to 1 mm diameter leaving no dense wire core and without development of instabilities. The main current pulse then ionizes all the array mass resulting in suppression of the ablation phase, an accelerating implosion, and no trailing mass. Rayleigh-Taylor instability growth in the imploding plasma is inferred to be seeded by mu m-scale perturbations on the surface of the wires. The absence of wire cores is found to be the critical factor in altering the implosion dynamics.

引用

页数：4

共 13 条

[1] Current-induced implosion of a multiwire array as a radial plasma rainstorm [J].

Alexandrov, VV ;

Grabovsky, EV ;

Zukakishvili, GG ;

Zurin, MV ;

Komarov, NN ;

Krasovsky, IV ;

Mitrofanov, KN ;

Nedoseev, SL ;

Oleinik, GM ;

Porofeev, IY ;

Samokhin, AA ;

Sasorov, PV ;

Smirnov, VP ;

Fedulov, MV ;

Frolov, IN ;

Chernov, AA .

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS, 2003, 97 (04) :745-753

[2] Nested wire array Z-pinch experiments operating in the current transfer mode [J].

Bland, SN ;

Lebedev, SV ;

Chittenden, JP ;

Jennings, C ;

Haines, MG .

PHYSICS OF PLASMAS, 2003, 10 (04) :1100-1112

[3] Characteristics and scaling of tungsten-wire-array z-pinch implosion dynamics at 20 MA -: art. no. 046406 [J].

Cuneo, ME ;

Waisman, EM ;

Lebedev, SV ;

Chittenden, JP ;

Stygar, WA ;

Chandler, GA ;

Vesey, RA ;

Yu, EP ;

Nash, TJ ;

Bliss, DE ;

Sarkisov, GS ;

Wagoner, TC ;

Bennett, GR ;

Sinars, DB ;

Porter, JL ;

Simpson, WW ;

Ruggles, LE ;

Wenger, DF ;

Garasi, CJ ;

Oliver, BV ;

Aragon, RA ;

Fowler, WE ;

Hettrick, MC ;

Idzorek, GC ;

Johnson, D ;

Keller, K ;

Lazier, SE ;

McGurn, JS ;

Mehlhorn, TA ;

Moore, T ;

Nielsen, DS ;

Pyle, J ;

Speas, S ;

Struve, KW ;

Torres, JA .

PHYSICAL REVIEW E, 2005, 71 (04)

[4] Power enhancement by increasing the initial array radius and wire number of tungsten Z pinches [J].

Deeney, C ;

Nash, TJ ;

Spielman, RB ;

Seaman, JF ;

Chandler, GC ;

Struve, KW ;

Porter, JL ;

Stygar, WA ;

McGurn, JS ;

Jobe, DO ;

Gilliland, TL ;

Torres, JA ;

Vargas, MF ;

Ruggles, LE ;

Breeze, S ;

Mock, RC ;

Douglas, MR ;

Fehl, DL ;

McDaniel, DH ;

Matzen, MK ;

Peterson, DL ;

Matuska, W ;

Roderick, NF ;

MacFarlane, JJ .

PHYSICAL REVIEW E, 1997, 56 (05) :5945-5958

[5] Enhancement of X-ray power from a Z pinch using nested-wire arrays [J].

Deeney, C ;

Douglas, MR ;

Spielman, RB ;

Nash, TJ ;

Peterson, DL ;

L'Eplattenier, P ;

Chandler, GA ;

Seamen, JF ;

Struve, KW .

PHYSICAL REVIEW LETTERS, 1998, 81 (22) :4883-4886

[6] Quantitative analysis of plasma ablation using inverse wire array Z pinches [J].

Harvey-Thompson, A. J. ;

Lebedev, S. V. ;

Bland, S. N. ;

Chittenden, J. P. ;

Hall, G. N. ;

Marocchino, A. ;

Suzuki-Vidal, F. ;

Bott, S. C. ;

Palmer, J. B. A. ;

Ning, C. .

PHYSICS OF PLASMAS, 2009, 16 (02)

[7]

JONES M, 2010, APS M UNPUB, P5010

[8] Effect of discrete wires on the implosion dynamics of wire array Z pinches [J].

Lebedev, SV ;

Beg, FN ;

Bland, SN ;

Chittenden, JP ;

Dangor, AE ;

Haines, MG ;

Kwek, KH ;

Pikuz, SA ;

Shelkovenko, TA .

PHYSICS OF PLASMAS, 2001, 8 (08) :3734-3747

[9] Effects of Mass Ablation on the Scaling of X-Ray Power with Current in Wire-Array Z Pinches [J].

Lemke, R. W. ;

Sinars, D. B. ;

Waisman, E. M. ;

Cuneo, M. E. ;

Yu, E. P. ;

Haill, T. A. ;

Hanshaw, H. L. ;

Brunner, T. A. ;

Jennings, C. A. ;

Stygar, W. A. ;

Desjarlais, M. P. ;

Mehlhorn, T. A. ;

Porter, J. L. .

PHYSICAL REVIEW LETTERS, 2009, 102 (02)

[10] The physics of fast Z pinches [J].

Ryutov, DD ;

Derzon, MS ;

Matzen, MK .

REVIEWS OF MODERN PHYSICS, 2000, 72 (01) :167-223

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