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Excitation of X rays by electrons accelerated in air in the wake wave of a laser pulse

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Abstract

The characteristics of X rays of a laser plasma generated in the interaction of a femtosecond pulse with solid targets in an air atmosphere have been investigated. It has been shown that the mechanism for the generation of X rays in the interaction of short intense laser pulses with solid targets in a gas atmosphere is attributed to the generation of fast electrons in the region of the filamentation of a laser pulse. It has been proven experimentally that under such conditions, the solid target irradiated by laser radiation of even a low density of about 1015 W/cm2 very efficiently emits ∼10-keV photons. It has been shown theoretically that the maximum energy of accelerated electrons can reach ɛmax ∼ 100–200 keV under these conditions. This means that the proposed method can provide characteristic radiation with the energy of photons much higher than 10 keV.

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Authors and Affiliations

  1. Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaya ul. 13/19, Moscow, 127412, Russia

    A. Ya. Faenov, S. A. Pikuz Jr., I. Yu. Skobelev, P. S. Komarov, O. V. Chefonov, S. V. Gasilov & A. V. Ovchinnikov

  2. Moscow Institute of Physics and Technology, Institutskii per. 9, Dolgoprudnyi, Moscow region, 141700, Russia

    S. A. Pikuz Jr.

  3. Central Research Institute of Electric Power Industry 2-6-1, Nagasaka, Yokosuka, 240-0196, Kanagawa, Japan

    A. G. Zidkov

Authors
  1. A. Ya. Faenov
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  2. S. A. Pikuz Jr.
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  3. A. G. Zidkov
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  4. I. Yu. Skobelev
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  5. P. S. Komarov
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  6. O. V. Chefonov
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  7. S. V. Gasilov
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  8. A. V. Ovchinnikov
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Correspondence to A. Ya. Faenov.

Additional information

Original Russian Text © A.Ya. Faenov, S.A. Pikuz Jr., A.G. Zidkov, I.Yu. Skobelev, P.S. Komarov, O.V. Chefonov, S.V. Gasilov, A.V. Ovchinnikov, 2010, published in Pis’ma v Zhurnal Éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2010, Vol. 92, No. 6, pp. 415–419.

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Faenov, A.Y., Pikuz, S.A., Zidkov, A.G. et al. Excitation of X rays by electrons accelerated in air in the wake wave of a laser pulse. Jetp Lett. 92, 375–378 (2010). https://doi.org/10.1134/S0021364010180037

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  • DOI: https://doi.org/10.1134/S0021364010180037

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