Soft X-ray and EUV emission spectra of beryllium plasma produced by neodymium-glass laser radiation with broad frequency and angular spectra

• Published in: Quantum electronics (Woodbury, N.Y.) N.Y.), 2020-06, Vol.50 (6), p.603-607
• Main Authors: Sahakyan, A.T., Andreev, S.N., Kologrivov, A.A., Kondratenko, T.T., Puzyrev, V.N., Starodub, A.N., Tolstikhina, I.Yu, Fronya, A.A., Yakushev, O.F.
• Format: Article
• Language: English
• Subjects: ATOMIC AND MOLECULAR PHYSICS; Beryllium; CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Computer simulation; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Emission analysis; EMISSION SPECTRA; GLASS; Glass lasers; LASER RADIATION; LASERS; Line spectra; Local thermodynamic equilibrium; MATERIALS SCIENCE; Neodymium; PLASMA; Plasma spectra; Rapid prototyping; SIMULATION; SOFT X RADIATION; Soft x rays; SOLIDS; THERMODYNAMICS; Ultraviolet emission; Ultraviolet spectra
• ISSN: 1063-7818; 1468-4799
• DOI: 10.1070/QEL17220

We present the results of an experimental study of soft X-ray (SXR) and extreme ultraviolet emission spectra of the plasma produced by exposing a plane solid beryllium target to laser radiation with broad frequency and angular spectra. SXR lines up to 1s - 9p of Be IV as well as the plasma continuum are recorded for a laser focal-spot intensity of 5.3 × 1013 W cm−2. To model the SXR beryllium plasma spectra, simulations are carried out using the INDHAUS programme and the FLYCHK code in the framework of local thermodynamic equilibrium model, which agree nicely with experimentally obtained results.