Τίτλος:
A numerical study on laboratory plasma dynamics validated by low current x-pinch experiments
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
The computational study of x-pinch plasmas driven by pulsed power generators demands the development of advanced numerical models and simulation schemes, able to enlighten the experiments. The capabilities of PLUTO code are here extended to enable the investigation of low current produced x-pinch plasmas. The numerical modules of the code used and modified are presented and discussed. The simulations results are compared to experiments, carried out on a table-top pulsed power plasma generator implemented in a mode of producing a peak current of ~45 kA with a rise time (10%–90%) of 50 ns, loaded with Tungsten wires. The structural evolution of plasma density is studied and its influence on the magnetic field is analyzed with the help of the new simulation data. The simulated areal mass density is compared with the experimentally measured dense opaque region to enlighten the dense plasma evolution. In addition, the measured areal electron density is compared to the simulation results. Moreover, the new simulation data offer valuable insights to the main jet formation mechanisms, which are further analyzed and discussed in relation to the influence of the J × B force and the momentum. © 2020 IOP Publishing Ltd Printed in the UK
Συγγραφείς:
Koundourakis, G.
Skoulakis, A.
Kaselouris, E.
Fitilis, I.
Clark, E.L.
Chatzakis, J.
Bakarezos, M.
Vlahakis, N.
Papadogiannis, N.A.
Dimitriou, V.
Tatarakis, M.
Περιοδικό:
Plasma Physics and Controlled Fusion
Εκδότης:
IOP Publishing Ltd
Λέξεις-κλειδιά:
Dynamics; Plasma density; Plasma diagnostics; Plasma jets; Plasma theory, Computational studies; Laboratory plasma; Pulsed-power generators; Pulsed-power plasmas; Simulation data; Structural evolution; Tungsten wires; X-pinch plasma, Pinch effect
DOI:
10.1088/1361-6587/abbebf
