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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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Abstract

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 Al8+. The maximum energies of ions obey the scaling relation E max = 5ZeU 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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Authors and Affiliations

  1. Lebedev Institute of Physics, Russian Academy of Sciences, Moscow, 119991, Russia

    I. V. Romanov, V. L. Paperny, Yu. V. Korobkin, N. G. Kiselev, A. A. Rupasov & A. S. Shikanov

  2. Irkutsk State University, Irkutsk, 664003, Russia

    I. V. Romanov, V. L. Paperny, Yu. V. Korobkin, N. G. Kiselev, A. A. Rupasov & A. S. Shikanov

Authors
  1. I. V. Romanov
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  2. V. L. Paperny
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  3. Yu. V. Korobkin
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  4. N. G. Kiselev
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  5. A. A. Rupasov
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  6. A. S. Shikanov
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Correspondence to I. V. Romanov.

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Original Russian Text © I.V. Romanov, V.L. Paperny, Yu.V. Korobkin, N.G. Kiselev, A.A. Rupasov, A.S. Shikanov, 2013, published in Pis’ma v Zhurnal Tekhnicheskoi Fiziki, 2013, Vol. 39, No. 8, pp. 62–70.

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Romanov, I.V., Paperny, V.L., Korobkin, Y.V. et al. Influence of laser pulse parameters on characteristics of a source of multicharged metal ions based on laser-induced medium-power spark discharge. Tech. Phys. Lett. 39, 388–392 (2013). https://doi.org/10.1134/S1063785013040226

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  • DOI: https://doi.org/10.1134/S1063785013040226

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