Technical Physics Letters

, Volume 45, Issue 10, pp 970–972 | Cite as

Observation of Laser-Induced Spark in the Density Jump in a Gas-Jet Target

  • A. N. NechaiEmail author
  • A. A. Perekalov
  • N. I. Chkhalo
  • N. N. Salashchenko


In the design of powerful laser-plasma sources of extreme ultraviolet radiation with a gas jet as the target, the problem of degradation of gas nozzles is topical. Degradation is observed due to insufficient distance from the generation zone of the laser-induced spark to the nozzle exit. The comprehensive solution to this problem is proposed by forming the laser-induced spark in the density jumps that are generated upon deceleration of the supersonic gas jet. In such a density jump, the laser-induced spark is obtained and measurements of emission radiation intensity are performed.


extreme ultraviolet radiation degradation of gas nozzles density jumps laser-induced spark. 



This work was supported by the Russian Science Foundation, project no. 17-12-01227.


The authors declare that they have no conflict of interest.


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Copyright information

© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • A. N. Nechai
    • 1
    Email author
  • A. A. Perekalov
    • 1
    • 2
  • N. I. Chkhalo
    • 1
  • N. N. Salashchenko
    • 1
  1. 1.Institute for Physics of Microstructures, Russian Academy of SciencesNizhny NovgorodRussia
  2. 2.Lobachevsky State University of Nizhny NovgorodNizhny NovgorodRussia

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