Measurements of the spatial magnetic field distribution in a z-pinch plasma throughout the stagnation process

作者：Rosenzweig G; Kroupp E; Fisher A; Maron Y

来源：Journal of Instrumentation, 2017, 12(09): P09004.

DOI：10.1088/1748-0221/12/09/P09004

• Plasma diagnostics
• charged-particle spectroscopy
• Plasma diagnostics
• high speed photography
• Plasma diagnostics
• interferometry, spectroscopy and imaging

We report on measurements, made for the first time for an imploding plasma at its stagnation, of the magnetic field spatial distribution. Utilized for the measurements is a spectroscopic technique based on simultaneous recording of each of the left-and right-handed circularly polarized Zeeman emissions. While this method allows for overcoming the Stark-and Doppler-broadenings that obscure the Zeeman splitting, it requires a line of sight that is parallel to the magnetic field lines. To this end, the radial charge-state distribution in the stagnating z-pinch plasma was measured, and the method was employed for emission lines of several selected charge states located in various radial locations. This also allowed for measuring the time-resolved magnetic field radial distribution in a single discharge, which is advantageous for high-energy-density plasma experiments. These distributions were measured at various locations along the pinch axis.

• 出版日期2017-9
• 单位MIT