Influence of laser pulse parameters on characteristics of a source of multicharged metal ions based on laser-induced medium-power spark discharge

The dynamics of laser-induced vacuum spark discharge with storage energy not exceeding 25 J has been studied in a broad range of laser pulse energies and power densities. It is shown that, using discharge-initiating laser pulse of nanosecond duration, it is possible to obtain stable single pinching...

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Published in:Technical physics letters 2013-04, Vol.39 (4), p.388-392
Main Authors: Romanov, I. V., Paperny, V. L., Korobkin, Yu. V., Kiselev, N. G., Rupasov, A. A., Shikanov, A. S.
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Language:English
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Classical and Continuum Physics
Physics
Physics and Astronomy
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description The dynamics of laser-induced vacuum spark discharge with storage energy not exceeding 25 J has been studied in a broad range of laser pulse energies and power densities. It is shown that, using discharge-initiating laser pulse of nanosecond duration, it is possible to obtain stable single pinching of cathode jet plasma at a storage voltage above 10 kV. Plasma pinching is accompanied by the generation of a beam of multicharged ions of the cathode material (aluminum) up to Al 8+ . The maximum energies of ions obey the scaling relation E max = 5 ZeU 0 that has been obtained previously for a low-voltage discharge. An increase in the laser pulse energy leads to growth of the average beam charge and a sharp decrease in the ion energy.
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Physics and Astronomy
title Influence of laser pulse parameters on characteristics of a source of multicharged metal ions based on laser-induced medium-power spark discharge
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