Observations of Modified Three-Dimensional Instability Structure for Imploding z-Pinch Liners that are Premagnetized with an Axial Field

被引：125

作者：

Awe, T. J. ^{[1
]}

McBride, R. D. ^{[1
]}

Jennings, C. A. ^{[1
]}

Lamppa, D. C. ^{[1
]}

Martin, M. R. ^{[1
]}

Rovang, D. C. ^{[1
]}

Slutz, S. A. ^{[1
]}

Cuneo, M. E. ^{[1
]}

Owen, A. C. ^{[1
]}

Sinars, D. B. ^{[1
]}

Tomlinson, K. ^{[2
]}

Gomez, M. R. ^{[1
]}

Hansen, S. B. ^{[1
]}

Herrmann, M. C. ^{[1
]}

McKenney, J. L. ^{[1
]}

Nakhleh, C. ^{[3
]}

Robertson, G. K. ^{[1
]}

Rochau, G. A. ^{[1
]}

Savage, M. E. ^{[1
]}

Schroen, D. G. ^{[2
]}

Stygar, W. A. ^{[1
]}

机构：

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

[2] Gen Atom, San Diego, CA 92121 USA

[3] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 111卷 / 23期

关键词：

Axial field - Helical instability - Helical structures - Liner surface - Magneto-hydrodynamics simulations - Symmetric instabilities - Three dimensional instability - Z pinch;

D O I：

10.1103/PhysRevLett.111.235005

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Novel experimental data are reported that reveal helical instability formation on imploding z-pinch liners that are premagnetized with an axial field. Such instabilities differ dramatically from the mostly azimuthally symmetric instabilities that form on unmagnetized liners. The helical structure persists at nearly constant pitch as the liner implodes. This is surprising since, at the liner surface, the azimuthal drive field presumably dwarfs the axial field for all but the earliest stages of the experiment. These fundamentally 3D results provide a unique and challenging test for 3D-magnetohydrodynamics simulations.

引用

页数：5

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