Open AccessНаблюдение лазерной искры на скачке уплотнения в газоструйной мишени
Author(s) -
А.Н. Нечай,
А.А. Перекалов,
Nikolai I. Chkhalo,
Н. Н. Салащенко
Publication year - 2019
Publication title -
pisʹma v žurnal tehničeskoj fiziki
Language(s) - English
Resource type - Journals
eISSN - 1726-7471
pISSN - 0320-0116
DOI - 10.21883/pjtf.2019.19.48310.17862
Subject(s) - spark (programming language) , nozzle , shock wave , laser , jet (fluid) , supersonic speed , spark gap , shock (circulatory) , spark discharge , mechanics , plasma , materials science , outflow , work (physics) , optics , physics , thermodynamics , meteorology , electrode , nuclear physics , computer science , medicine , quantum mechanics , programming language
The problem of degradation of gas nozzles is relevant in designing of high-power laser-plasma sources of extreme ultraviolet radiation with a gas jet as a target. Degradation is observed due to insufficient removal of the zone of formation of a laser spark from the nozzle exit. A cardinal solution of this problem is proposed due to the formation of a laser spark on shock waves, which are specially formed during the outflow of a supersonic gas jet. In this work, a laser spark was obtained on a similar shock wave and the emission intensity was measured as a function of the geometrical location of the spark formation.