Diagnostics on Yang accelerator for Z-pinch experiment

We investigated the radiation characteristics and implosion dynamics of low-wire-number cylindrical tungsten wire array Z-pinches on the YANG accelerator with a peak current 0.8-1.1 MA and a rising time ∼ 90 ns. The arrays are made up of (8-32)×5 µm wires 6/10 mm in diameter and 15 mm in height. The highest X-ray power obtained in the experiments was about 0.37 TW with the total radiation energy ∼ 13 kJ and the energy conversion efficiency ∼ 9% (24×5 µm wires, 6 mm in diameter). Most of the X-ray emissions from tungsten Z-pinch plasmas were distributed in the spectral band of 100-600 eV, peaked at 250 and 375 eV. The dominant wavelengths of the wire ablation and the magneto-Rayleigh-Taylor instability were found and analyzed through measuring the time-gated self-emission and laser interferometric images. Through analyzing the implosion trajectories obtained by an optical streak camera, the run-in velocities of the Z-pinch plasmas at the end of the implosion phase were determined to be about (1.3-2.1)×10 7 cm/s.

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Diagnostics on Yang accelerator for Z-pinch experiment

Cited by 3 publications

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Radiation characteristics and implosion dynamics of tungsten wire array Z-pinches on the YANG accelerator

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