Secondary wire array load for Z pinch experiment

Abstract

In order to facilitate carrying out research on a control method for early-stage physical state of a metal wire array under a megampere current and implosion plasma instability development process, asecondary wire array load is provided with two independent current loops, the currents respectively pass through a load wire array and a reverse rotation type wire array, the respective loop inductance can be adjusted by adjusting lengths, numbers and / or diameters of metal wires of the load wire array and the reverse rotation type wire array, the change and the control of the early-stage physicalstate of the metal wire are achieved, an early-stage nuclear crown structure is prevented, and meanwhile, the influence of different physical states on subsequent implosion and plasma instability development process of the load wire array can be researched.

Description

technical field [0001] The invention relates to a load of a Z-pinch experiment of a large-scale pulse power device, in particular to a load capable of regulating the early physical state of a metal wire array load. Background technique [0002] Z pinch (Z-pinch) is a plasma configuration that relies on the electromagnetic force generated by the current in the Z direction to pinch itself or move cohesively toward the axis. The commonly used load is airflow, wire array or sleeve, in which the metal The wire array load is connected to the cathode and anode of the Z-pinch experimental device by selecting a μm-level metal wire, which is convenient for quality control to achieve load matching with the megaampere (MA) level device. At present, the silk array Z-pinch plasma radiation source is the most effective laboratory soft X-ray source, and has wide applications in the research fields of radiation effects, inertial confinement fusion (ICF), high energy density physics and labor...

AI Technical Summary

Problems solved by technology

[0004] In order to suppress the formation of the "corona" structure, the commonly used methods are feeding pre-pulse (amplitude 1-10kA, leading edge 10-20ns) from the outside or coating metal wires, but the research is mostly under low current, and mega The research on the control method of the early physical state of the wire array under the current of the An (MA) level, and the research on the development process of the implosion plasma instability have not yet been widely carried out.

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