Azimuthal structure and global instability in the implosion phase of wire array Z-pinch experiments

被引：107

作者：

Lebedev, SV ^{[1
]}

Mitchell, IH ^{[1
]}

Aliaga-Rossel, R ^{[1
]}

Bland, SN ^{[1
]}

Chittenden, JP ^{[1
]}

Dangor, AE ^{[1
]}

Haines, MG ^{[1
]}

机构：

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

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.81.4152

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The implosion of aluminum wire array z pinches driven by a 1.4 MA, 240 ns current pulse is studied. Plasma evolution is measured in the r-theta plane for the first time by an end-on laser interferometer. Merging of coronal plasmas with density of 10(17) cm(-3) occurs in 90-65 ns for 16 mm diam arrays with 8-64 wires. Early uncorrelated instabilities (wavelength lambda similar to 0.5 mm) are observed in individual wires with later development of a global m = 0 instability (lambda similar to 2 mm). The number of Rayleigh-Taylor instability e foldings is 5.6-7 when the m = 0 instability reaches an observable level and increases with the number of wires.

引用

页码：4152 / 4155

页数：4

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