Matter and Radiation at Extremes, Volume. 6, Issue 1, 014402(2021)

Precise wavelength measurements of potassium He- and Li-like satellites emitted from the laser plasma of a mineral target

S. N. Ryazantsev1,2、a), I. Yu. Skobelev1,2, E. D. Filippov2,3, A. S. Martynenko2, M. D. Mishchenko1,2, M. Krůs4, O. Renner4,5,6, and S. A. Pikuz1,2
Author Affiliations
  • 1National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Kashirskoe Shosse 31, 115409 Moscow, Russia
  • 2Joint Institute for High Temperatures of the Russian Academy of Sciences, Izhorskaya 13 Bldg 2, 125412 Moscow, Russia
  • 3Federal Research Center Institute of Applied Physics of the Russian Academy of Sciences, 46 Ulyanov Str., 603950 Nizhny Novgorod, Russia
  • 4Laser Plasma Department, Institute of Plasma Physics of the CAS, Za Slovankou 1782/3, Libeň, 182 00 Prague, Czech Republic
  • 5Department of Radiation and Chemical Physics, Institute of Physics of the CAS, Na Slovance 1999/2, 182 21 Prague, Czech Republic
  • 6ELI-Beamlines, Institute of Physics of the CAS, Za Radnicí 835, 252 41 Dolní Břežany, Czech Republic
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    Figures & Tables(5)
    Radiation spectrum of KAlSi3O8 plasma in x-ray wavelength range calculated using steady-state approximation for electron temperature Te = 1000 eV and electron density Ne = 1021 cm−3. Intensity vs nλ is shown for reflection order n = 1–5 of diffraction crystals (each order is associated with its own color).
    Spectrum of radiation emitted by KAlSi3O8 plasma in wavelength range of (a) 5.8–7.2 Å and (b) 11.6–15.1 Å calculated for conditions from Fig. 1. Intensity vs nλ is shown for reflection order n = (a) 1 and 2 and (b) 2 and 4. Each order is associated with its own color.
    Temporal dependencies of intensities of spectral lines emitted by Al, Si, and K ions. The curves were obtained using a time-dependent kinetic model for a plasma with electron temperature Te = 1000 eV and Ne = 1021 cm−3. In the initial state, all ions are singly ionized.
    (a) Spectrum of x-ray radiation emitted during irradiation of orthoclase crystal by (600-J, 480-ps) laser pulse. Indicated are the most intense spectral lines corresponding to the radiative transitions in multicharged ions of Si, Al, and K (K spectral lines are observed in the second order of reflection). (b) Enlarged region with three groups of KHeα line satellites corresponding to transitions in Li-like ion K XVII. The upper and lower configurations for each group of satellites are listed in Table I.
    • Table 1. Measured wavelengths of transitions in He- and Li-like K ions. Li-like satellites are labeled in accordance with notation introduced in Ref. 31.

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      Table 1. Measured wavelengths of transitions in He- and Li-like K ions. Li-like satellites are labeled in accordance with notation introduced in Ref. 31.

      Line name [transition(s)]λ (mÅ)Δλ (mÅ)
      KHeβ1s3pP111s2S013010.260.6
      KHeα1s2pP111s2S013532.550.6
      KHeinter1s2pP2,131s2S013549.350.6
      q, r (1s2p[P1]2sP21s22sS2)3560.870.6
      a–d (1s2p2P21s22pP2)3565.060.6
      k, j 1s2p2D21s22pP23569.10.6
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    S. N. Ryazantsev, I. Yu. Skobelev, E. D. Filippov, A. S. Martynenko, M. D. Mishchenko, M. Krůs, O. Renner, S. A. Pikuz. Precise wavelength measurements of potassium He- and Li-like satellites emitted from the laser plasma of a mineral target[J]. Matter and Radiation at Extremes, 2021, 6(1): 014402

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    Paper Information

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    Received: Jun. 23, 2020

    Accepted: Oct. 28, 2020

    Published Online: Apr. 22, 2021

    The Author Email: S. N. Ryazantsev (sergryaz@mail.ru)

    DOI:10.1063/5.0019496

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