By Topic

Implosion dynamics of a radiative composite Z-pinch

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

13 Author(s)
Benattar, R. ; Lab. de Phys. des Milieux Ionises, Ecole Polytech., Palaiseau, France ; Ney, P. ; Nikitin, A. ; Zakharov, S.V.
more authors

Two-dimensional simulation of a composite Z-pinch was performed by the complete radiative magnetohydrodynamic (MHD) code ZETA including detailed calculation of equations of state, spectral properties of materials, and radiation transport in non-local thermodynamic equilibrium multicharged ions plasma. The initial geometry, the substance components, and the electric current through the Z-pinch were similar to the joint experiment set up JEX-94 at Angara-5 facility. The geometry was: annular argon gas puff with inner and outer diameter of a nozzle cross section, 3 cm and 3.4 cm, respectively, and specific mass of 80 μg/cm. Inside it along the axis a foam cylinder 30% KCl in agar-agar with total mass 60 μg and diameter 1 mm was put. The initial gas distribution was modelled with a divergence of a jet along the Z-axis. A coupling of the Z-pinch with the electric current generator was modelled by an electrical circuit with a given electromagnetic wave, a resistance, an inductance, and a variable load (Z-pinch) similar to the Angara-5-1 output parameters. During the plasma implosion the total current reached the value of 3 MA at a time of 85 ns from the voltage start. Such current amplitude is much less than through the matched load (up to 4 MA as a rule): The plasma implosion is accompanied by the development of different types of short and long wave instabilities (thermal, radiative, nonisothermal, and MHD Rayleigh-Taylor modes). In this report, the detailed plasma implosion dynamics, the influence of instabilities, and the spectral radiation yield are discussed, and a comparison with the experimental results is done

Published in:

Plasma Science, IEEE Transactions on  (Volume:26 ,  Issue: 4 )