An inverse (exploding) wire array configuration, in which the wires form a cylinder around a current carrying electrode on axis, was used to study the ablation phase of the wires. This configuration allows the parameters of the plasma from individual wires of the array to be measured as the ablated plasma streams propagate in the outward radial direction. The density distribution and the evolution of the natural mode of modulation of the ablation flow was measured with interferometry and soft x-ray imaging. Measurements of the voltage across the array, which in this configuration is determined by the private magnetic flux around the individual wires, allow information on the localization of the current to be obtained. Results are compared to three-dimensional magnetohydrodynamics simulations.
Quantitative analysis of plasma ablation using inverse wire array Z pinches / A. J., Harvey Thompson; S. V., Lebedev; S. N., Bland; J. P., Chittenden; G. N., Hall; Marocchino, Alberto; F., Suzuki Vidal; S. C., Bott; J. B. A., Palmer; C., Ning. - In: PHYSICS OF PLASMAS. - ISSN 1070-664X. - STAMPA. - 16:2(2009), p. 022701. [10.1063/1.3077305]
Quantitative analysis of plasma ablation using inverse wire array Z pinches
MAROCCHINO, ALBERTO;
2009
Abstract
An inverse (exploding) wire array configuration, in which the wires form a cylinder around a current carrying electrode on axis, was used to study the ablation phase of the wires. This configuration allows the parameters of the plasma from individual wires of the array to be measured as the ablated plasma streams propagate in the outward radial direction. The density distribution and the evolution of the natural mode of modulation of the ablation flow was measured with interferometry and soft x-ray imaging. Measurements of the voltage across the array, which in this configuration is determined by the private magnetic flux around the individual wires, allow information on the localization of the current to be obtained. Results are compared to three-dimensional magnetohydrodynamics simulations.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.