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Plasma satellites of X-ray lines of ions in a picosecond laser plasma

  • Plasma, Gases
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Abstract

We present the results of our measurements of the spectra for multicharged ions in a plasma produced by moderately intense (about 1017Wcm−2) picosecond laser pulses. They suggest the existence of intense plasma oscillations with a frequency appreciably lower than the frequency of the laser radiation. The observed spectrum for the plasma satellites of the Lyman Lyα doublet of the hydrogenic F IX ion in a dense plasma was modeled theoretically. The resulting doublet profile was shown to have a complex structure that depends non-trivially both on the plasma density and on the frequency and amplitude of the plasma oscillations. The positions of the satellites and their separations allowed them to be associated with intense electrostatic oscillations with an amplitude of (4–6)×108Vcm−1 and a frequency near (0.7–1)×1015s−1. Assuming the oscillation frequency to be determined by the strength of the magnetic field B generated in the plasma, we obtained an estimate of B that is in reasonable agreement with other measurements and estimates of this quantity. Our theoretical analysis allowed explanation of the emission spectra observed when flat fluoroplastic targets were heated by intense picosecond laser pulses.

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Authors and Affiliations

  1. Central Research Institute of Machine Building, ul. Pionerskaya 4, Korolev, Moscow oblast, 141070, Russia

    V. S. Belyaev, V. I. Vinogradov, A. S. Kurilov & A. P. Matafonov

  2. Institute of Nuclear Fusion, Russian Research Center Kurchatov Institute, pl. Akademika Kurchatova 1, Moscow, 123182, Russia

    V. S. Lisitsa

  3. Moscow, 119421, Russia

    V. P. Gavrilenko

  4. Prokhorov Institute of General Physics, Russian Academy of Sciences, Moscow, 119991, Russia

    V. P. Gavrilenko & A. I. Magunov

  5. Multicharged Ion Spectra Data Center, VNIIFTRI, Mendeleevo, Moscow oblast, 141570, Russia

    A. Ya. Faenov, T. A. Pikuz, I. Yu. Skobelev & A. I. Magunov

  6. Department of Physics, Moscow State University, Vorob’evy gory, Moscow, 119992, Russia

    S. A. Pikuz Jr.

Authors
  1. V. S. Belyaev
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  2. V. I. Vinogradov
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  3. A. S. Kurilov
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  4. A. P. Matafonov
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  5. V. S. Lisitsa
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  6. V. P. Gavrilenko
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  7. A. Ya. Faenov
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  8. T. A. Pikuz
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  9. I. Yu. Skobelev
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  10. A. I. Magunov
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  11. S. A. Pikuz Jr.
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Additional information

__________

Translated from Zhurnal Éksperimental’no\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) i Teoretichesko\(\overset{\lower0.5em\hbox{$\smash{\scriptscriptstyle\smile}$}}{l} \) Fiziki, Vol. 126, No. 4, 2004, pp. 819–832.

Original Russian Text Copyright © 2004 by Belyaev, Vinogradov, Kurilov, Matafonov, Lisitsa, Gavrilenko, Faenov, Pikuz, Skobelev, Magunov, Pikuz, Jr.

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Belyaev, V.S., Vinogradov, V.I., Kurilov, A.S. et al. Plasma satellites of X-ray lines of ions in a picosecond laser plasma. J. Exp. Theor. Phys. 99, 708–718 (2004). https://doi.org/10.1134/1.1826161

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  • DOI: https://doi.org/10.1134/1.1826161

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