Characterization of an electrothermal plasma source for fusion transient simulations
Characterization of an electrothermal plasma source for fusion transient simulations
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DOI：
10.1063/1.4998593
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发表时间：
2018-01
影响因子：
3.2
通讯作者：
T. Gebhart;L. Baylor;J. Rapp;A. Winfrey
中科院分区：
文献类型：
--
作者：
T. Gebhart;L. Baylor;J. Rapp;A. Winfrey
The realization of fusion energy requires materials that can withstand high heat and particle fluxes at the plasma material interface. In this work, an electrothermal (ET) plasma source has been designed as a transient heat flux source for a linear plasma material interaction device. An ET plasma source operates in the ablative arc regime driven by a DC capacitive discharge. The current channel width is defined by the 4 mm bore of a boron nitride liner. At large plasma currents, the arc impacts the liner wall, leading to high particle and heat fluxes to the liner material, which subsequently ablates and ionizes. This results in a high density plasma with a large unidirectional bulk flow out of the source exit. The pulse length for the ET source has been optimized using a pulse forming network to have durations of 1 and 2 ms. The peak currents and maximum source energies seen in this system are 1.9 kA and 1.2 kJ for the 2 ms pulse and 3.2 kA and 2.1 kJ for the 1 ms pulse, respectively. This work is a proof...
