Two different modes of nested wire array Z-pinch implosions

被引：71

作者：

Lebedev, SV ^{[1
]}

Aliaga-Rossel, R ^{[1
]}

Bland, SN ^{[1
]}

Chittenden, JP ^{[1
]}

Dangor, AE ^{[1
]}

Haines, MG ^{[1
]}

Zakaullah, M ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 84卷 / 08期

关键词：

D O I：

10.1103/PhysRevLett.84.1708

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Two different modes of nested wire array implosion driven by a 1-MA, 240-ns current pulse were observed, determined by the fraction of total current induced in the inner array. Penetration by the outer array through the inner with switching of current occurred if current in the inner array was initially suppressed. Simultaneous implosion of arrays with apparent compression of magnetic flux between the arrays was observed if similar to 20% of the current was in the inner array. In both cases the x-ray pulse rise time of similar to 10 ns (for 260-ns implosion time) was considerably smaller than for a single array.

引用

页码：1708 / 1711

页数：4

共 15 条

[1] Fast commutation of high current in double wire array Z-pinch loads [J].

Davis, J ;

Gondarenko, NA ;

Velikovich, AL .

APPLIED PHYSICS LETTERS, 1997, 70 (02) :170-172

[2] Streaked laser shadowgraphy of tungsten wire array implosions on the Saturn generator [J].

Deeney, C ;

McGurn, J ;

Noack, D ;

Porter, JL ;

Spielman, RB ;

Seamen, JF ;

Jobe, DO ;

Vargas, MF ;

Gilliland, T ;

Douglas, MR ;

Matzen, MK .

REVIEW OF SCIENTIFIC INSTRUMENTS, 1997, 68 (01) :653-655

[3] 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

[4] 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

[5]

DOUGLAS MR, 1997, B AM PHYS SOC, V42, P1878

[6] SUPPRESSION OF RAYLEIGH-TAYLOR INSTABILITY BY THE SNOWPLOW MECHANISM [J].

GOLBERG, SM ;

VELIKOVICH, AL .

PHYSICS OF FLUIDS B-PLASMA PHYSICS, 1993, 5 (04) :1164-1172

[7] Two-dimensional radiation-magnetohydrodynamic simulations of SATURN imploding Z pinches [J].

Hammer, JH ;

Eddleman, JL ;

Springer, PT ;

Tabak, M ;

Toor, A ;

Wong, KL ;

Zimmerman, GB ;

Deeney, C ;

Humphreys, R ;

Nash, TJ ;

Sanford, TWL ;

Spielman, RB ;

DeGroot, JS .

PHYSICS OF PLASMAS, 1996, 3 (05) :2063-2069

[8] OBSERVATION OF A STABLE DENSE CORE WITHIN AN UNSTABLE CORONAL PLASMA IN WIRE-INITIATED DENSE Z-PINCH EXPERIMENTS [J].

KALANTAR, DH ;

HAMMER, DA .

PHYSICAL REVIEW LETTERS, 1993, 71 (23) :3806-3809

[9] Azimuthal structure and global instability in the implosion phase of wire array Z-pinch experiments [J].

Lebedev, SV ;

Mitchell, IH ;

Aliaga-Rossel, R ;

Bland, SN ;

Chittenden, JP ;

Dangor, AE ;

Haines, MG .

PHYSICAL REVIEW LETTERS, 1998, 81 (19) :4152-4155

[10] The dynamics of wire array Z-pinch implosions [J].

Lebedev, SV ;

Aliaga-Rossel, R ;

Bland, SN ;

Chittenden, JP ;

Dangor, AE ;

Haines, MG ;

Mitchell, IH .

PHYSICS OF PLASMAS, 1999, 6 (05) :2016-2022

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