Evidence of stabilization in the Z-pinch

Theoretical studies have predicted that the Z-pinch can be stabilized with a sufficiently sheared axial flow [U. Shumlak and C. W. Hartman, Phys. Rev. Lett. 75, 3285 (1995)]. A Z-pinch experiment is designed to generate a plasma which contains a large axial flow. Magnetic fluctuations and velocity p...

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Veröffentlicht in:Physical review letters 2001-11, Vol.87 (20), p.205005-205005, Article 205005
Hauptverfasser: Shumlak, U, Golingo, R P, Nelson, B A, Den Hartog, D J
Format: Artikel
Sprache:eng
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Zusammenfassung:Theoretical studies have predicted that the Z-pinch can be stabilized with a sufficiently sheared axial flow [U. Shumlak and C. W. Hartman, Phys. Rev. Lett. 75, 3285 (1995)]. A Z-pinch experiment is designed to generate a plasma which contains a large axial flow. Magnetic fluctuations and velocity profiles in the plasma pinch are measured. Experimental results show a stable period which is over 700 times the expected instability growth time in a static Z-pinch. The experimentally measured axial velocity shear is greater than the theoretical threshold during the stable period and approximately zero afterwards when the magnetic mode fluctuations are high.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.87.205005