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Numerical simulations of Z-Pinch experiments to createsupersonic differentially-rotating plasma flows

Published online by Cambridge University Press:  13 February 2013

M. Bocchi ,
B. Ummels ,
J.P. Chittenden  and
S.V. Lebedev
M. Bocchi
Affiliation:
Imperial College, Blackett Laboratory, SW7 2BW London, UK
B. Ummels
Affiliation:
Imperial College, Blackett Laboratory, SW7 2BW London, UK
J.P. Chittenden
Affiliation:
Imperial College, Blackett Laboratory, SW7 2BW London, UK
S.V. Lebedev
Affiliation:
Imperial College, Blackett Laboratory, SW7 2BW London, UK

Abstract

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In the context of high energy density laboratory astrophysics, we aim to produce andstudy a rotating plasma relevant to accretion discs physics. We devised an experimentalsetup based on a modified cylindrical wire array and we studied it numerically with thethree-dimensional, resistive magneto-hydrodynamic code GORGON. The simulations show that arotating plasma cylinder is formed, with typical rotation velocity ~35 km/s andMach number ~5. In addition, the plasma ring is differentially rotating andstrongly radiatively cooled. The introduction of external magnetic fields isdiscussed.

References

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