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Abstract <p>We report the results of studying X-ray emission spectra in the energy range 0.2 keV ≤ <i>h</i>ν ≤ 20&#xa0;keV from the plasma of a laser-induced spark discharge with a current of up to 30 kA. The X-ray energy spectra are measured using an absorber method with a set of lithium fluoride LiF(Mg,Ti) thermoluminescence detectors. X-ray measurements by a pin diode are performed as a supplementary diagnostic. It is shown that the X-ray spectra exhibit noticeable differences at different voltage polarities on high-voltage triggering electrode, with intensity and stability being higher across the entire studied range upon initiation at cathodes.</p>

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X-Ray Spectra of a Vacuum Spark with Laser-Assisted Initiation at the Cathode or Anode

  • 期刊论文

  • 发表日期：

    2025年12月9日

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  • A. P. Melekhov,
  • E. D. Vovchenko,
  • K. A. Ivanov,
  • K. I. Kozlovskii,
  • G. Kh. Salakhutdinov,
  • I. G. Grigoryeva,
  • I. A. Busygina,
  • P. V. Moskvich

摘要

Abstract

We report the results of studying X-ray emission spectra in the energy range 0.2 keV ≤ hν ≤ 20 keV from the plasma of a laser-induced spark discharge with a current of up to 30 kA. The X-ray energy spectra are measured using an absorber method with a set of lithium fluoride LiF(Mg,Ti) thermoluminescence detectors. X-ray measurements by a pin diode are performed as a supplementary diagnostic. It is shown that the X-ray spectra exhibit noticeable differences at different voltage polarities on high-voltage triggering electrode, with intensity and stability being higher across the entire studied range upon initiation at cathodes.