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Compact Induction Accelerator of Laser Plasma for Ion Energy up to 1 MeV

  • PHYSICS AND TECHNIQUE OF ACCELERATORS
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Abstract

The collective acceleration of laser plasma ions in a rapidly increasing magnetic field (108 T/s) excited by a powerful current pulse in a low-inductive conical spiral expanding in the direction of plasma acceleration has been studied. A mathematical model and an algorithm for calculating the radial Br and axial Bz components of the magnetic field in the approximation of a conical spiral by a system of rings of variable radius are proposed to analyze the factors affecting the efficiency of such acceleration. Based on computer modeling and an experimental variation of magnetic-field excitation parameters, the regime of effective ion acceleration is obtained. With the help of time-of-flight collector measurements, the velocities of ions whose atomic mass differs by two orders of magnitude are determined. The maximum velocity of both light ions (lithium) and heavy ions (lead) exceeds 106 m/s, and the corresponding energy for lead ions is ~1 MeV. The efficiency of collective acceleration with the direct acceleration of laser plasma ions in a high-current high-voltage diode with magnetic insulation is compared.

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Funding

This work was supported by the Ministry of Science and Higher Education of the Russian Federation under agreement no. 14.575.21.0169 (RFMEFI57517X0169).

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Authors and Affiliations

  1. National Research Nuclear University MEPhI, 115409, Moscow, Russia

    E. D. Vovchenko, K. I. Kozlovskij, A. E. Shikanov, A. R. Karimov, V. I. Rashchikov, V. L. Shatokhin, A. A. Isaev & O. V. Deryabochkin

Authors
  1. E. D. Vovchenko
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  2. K. I. Kozlovskij
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  3. A. E. Shikanov
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  4. A. R. Karimov
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  5. V. I. Rashchikov
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  6. V. L. Shatokhin
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  7. A. A. Isaev
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  8. O. V. Deryabochkin
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Corresponding author

Correspondence to E. D. Vovchenko.

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Translated by L. Mosina

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Vovchenko, E.D., Kozlovskij, K.I., Shikanov, A.E. et al. Compact Induction Accelerator of Laser Plasma for Ion Energy up to 1 MeV. Phys. Part. Nuclei Lett. 17, 498–502 (2020). https://doi.org/10.1134/S1547477120040494

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  • DOI: https://doi.org/10.1134/S1547477120040494

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