Abstract
Stability of metal-puff Z pinches was studied experimentally. Experiments were carried out on a facility producing a load current up to 450 kA with a rise time of 450ns. In a metal-puff Z pinch, the plasma shell is produced due to evaporation of the electrode material during the operation of a vacuum arc. In the experiment to be reported, a single-shell and a shell-on-jet pinch load with magnesium electrodes were used. Two-dimensional, 3 ns gated, visible-light images were taken at different times during the implosion. When the shell was formed from a collimated plasma flow with small radial divergence, Rayleigh-Taylor (RT) instability typical of gas-puff implosions was recorded. The RT instability was completely suppressed in a mode where the initial density distribution of the shell approached a tailored density profile [A. L. Velikovich et al., Phys. Rev. Lett. 77, 853 (1996)].
| Original language | English |
|---|---|
| Article number | 052701 |
| Journal | Physics of Plasmas |
| Volume | 21 |
| Issue number | 5 |
| DOIs | |
| Publication status | Published - 2014 |
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ASJC Scopus subject areas
- Condensed Matter Physics
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Study of the stability of Z-pinch implosions with different initial density profiles. / Rousskikh, A. G.; Zhigalin, A. S.; Oreshkin, V. I.; Labetskaya, N. A.; Chaikovsky, S. A.; Batrakov, A. V.; Yushkov, G. Yu; Baksht, R. B.
In: Physics of Plasmas, Vol. 21, No. 5, 052701, 2014.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Study of the stability of Z-pinch implosions with different initial density profiles
AU - Rousskikh, A. G.
AU - Zhigalin, A. S.
AU - Oreshkin, V. I.
AU - Labetskaya, N. A.
AU - Chaikovsky, S. A.
AU - Batrakov, A. V.
AU - Yushkov, G. Yu
AU - Baksht, R. B.
PY - 2014
Y1 - 2014
N2 - Stability of metal-puff Z pinches was studied experimentally. Experiments were carried out on a facility producing a load current up to 450 kA with a rise time of 450ns. In a metal-puff Z pinch, the plasma shell is produced due to evaporation of the electrode material during the operation of a vacuum arc. In the experiment to be reported, a single-shell and a shell-on-jet pinch load with magnesium electrodes were used. Two-dimensional, 3 ns gated, visible-light images were taken at different times during the implosion. When the shell was formed from a collimated plasma flow with small radial divergence, Rayleigh-Taylor (RT) instability typical of gas-puff implosions was recorded. The RT instability was completely suppressed in a mode where the initial density distribution of the shell approached a tailored density profile [A. L. Velikovich et al., Phys. Rev. Lett. 77, 853 (1996)].
AB - Stability of metal-puff Z pinches was studied experimentally. Experiments were carried out on a facility producing a load current up to 450 kA with a rise time of 450ns. In a metal-puff Z pinch, the plasma shell is produced due to evaporation of the electrode material during the operation of a vacuum arc. In the experiment to be reported, a single-shell and a shell-on-jet pinch load with magnesium electrodes were used. Two-dimensional, 3 ns gated, visible-light images were taken at different times during the implosion. When the shell was formed from a collimated plasma flow with small radial divergence, Rayleigh-Taylor (RT) instability typical of gas-puff implosions was recorded. The RT instability was completely suppressed in a mode where the initial density distribution of the shell approached a tailored density profile [A. L. Velikovich et al., Phys. Rev. Lett. 77, 853 (1996)].
UR - http://www.scopus.com/inward/record.url?scp=84899706735&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84899706735&partnerID=8YFLogxK
U2 - 10.1063/1.4874323
DO - 10.1063/1.4874323
M3 - Article
VL - 21
JO - Physics of Plasmas
JF - Physics of Plasmas
SN - 1070-664X
IS - 5
M1 - 052701
ER -