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Experimental Study of Space Charge Structure and Expansion Dynamics of Laser Ablation Plasma

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Russian Physics Journal Aims and scope

Using the method of spectrally selective photorecording in a nanosecond temporal resolution, the distribution of neutral atoms and single- and double-charged gallium ions in a plasma plume is investigated under the conditions of laser ablation of a gallium-indium target and so is the expansion dynamics of both components and the plume as a whole. The expansion velocity of a neutral atomic component of the plume is found. The expansion velocity of the glow boundary and the shift velocity of the glow intensity maximum are found to be close to 8.5∙103 and 6∙103 m/s, respectively. The kinetic energy range, corresponding to these values for the gallium atoms (13–26 eV) is quite consistent with the position of local maximum measured earlier from the energy distribution of single-charged gallium ions.

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Authors and Affiliations

  1. Institute of High-Current Electronics of the Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia

    S. A. Popov, E. L. Dubrovskaya & A. V. Batrakov

Authors
  1. S. A. Popov
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  2. E. L. Dubrovskaya
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  3. A. V. Batrakov
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Correspondence to S. A. Popov.

Additional information

Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 3, pp. 145–151, March, 2020.

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Popov, S.A., Dubrovskaya, E.L. & Batrakov, A.V. Experimental Study of Space Charge Structure and Expansion Dynamics of Laser Ablation Plasma. Russ Phys J 63, 508–515 (2020). https://doi.org/10.1007/s11182-020-02063-x

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  • DOI: https://doi.org/10.1007/s11182-020-02063-x

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