Plasma Radiation Source on the Basis of the Gas Puff with Outer Plasma Shell in the Circuit of a Mega-Ampere Load Current Doubler


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Abstract

Characteristics of Z-pinch plasma radiation in the form of a double shell neon gas puff with outer plasma shell are investigated in the microsecond implosion mode. Experiments are performed using a GIT-12 mega-joule generator with load current doubler having a ferromagnetic core at implosion currents up to 5 MA. Conditions for matching of the nonlinear load with the mega-ampere current multiplier circuit are determined. The load parameters (plasma shell characteristics and mass and geometry of gas puff shells) are optimized on the energy supplied to the gas puff and n energy characteristics of radiation. It is established that the best modes of K-shell radiation in neon are realized for such radial distribution of the gas-puff material at which the compression velocity of the shell is close to a constant and amounts to 27–30 cm/μs. In these modes, up to 40% of energy supplied to the gas puff is converted into K-shell radiation. The reasons limiting the efficiency of the radiation source with increasing implosion current are analyzed. A modernized version of the energy supply from the current doubler to the Z-pinch is proposed.

About the authors

V. A. Kokshenev

Institute of High-Current Electronics of the Siberian Branch of the Russian Academy of Sciences

Author for correspondence.
Email: vak@oit.hcei.tsc.ru
Russian Federation, Tomsk

A. Yu. Labetsky

Institute of High-Current Electronics of the Siberian Branch of the Russian Academy of Sciences

Email: vak@oit.hcei.tsc.ru
Russian Federation, Tomsk

A. V. Shishlov

Institute of High-Current Electronics of the Siberian Branch of the Russian Academy of Sciences

Email: vak@oit.hcei.tsc.ru
Russian Federation, Tomsk

N. E. Kurmaev

Institute of High-Current Electronics of the Siberian Branch of the Russian Academy of Sciences

Email: vak@oit.hcei.tsc.ru
Russian Federation, Tomsk

F. I. Fursov

Institute of High-Current Electronics of the Siberian Branch of the Russian Academy of Sciences

Email: vak@oit.hcei.tsc.ru
Russian Federation, Tomsk

R. K. Cherdizov

Institute of High-Current Electronics of the Siberian Branch of the Russian Academy of Sciences

Email: vak@oit.hcei.tsc.ru
Russian Federation, Tomsk

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