Photoionized plasmas in laboratory: a connection to astrophysics and planetary sciences

0521909 - FZÚ 2020 RIV US eng C - Conference Paper (international conference)
Bartnik, A. - Pisarczyk, T. - Wachulak, P. - Chodukowski, T. - Fok, T. - Wegrzynski, L. - Kalinowska, Z. - Fiedorowicz, H. - Jarocki, R. - Szczurek, M. - Krouský, E. - Pfeifer, M. - Skála, J. - Ullschmied, J. - Dostál, J. - Dudžák, R. - Hřebíček, Jan - Medřík, Tomáš - Cikhardt, J. - Cikhardtová, B. - Klír, D. - Rezac, K. - Pina, L.
Photoionized plasmas in laboratory: a connection to astrophysics and planetary sciences.
EUV and X-ray Optics: Synergy between Laboratory and Space IV. Bellingham: International Society for Optical Engineering, 2015 - (Hudec, R.; Pína, L.), Roč. 9510 (2015), s. 1-10, č. článku 95100P. Proceedings of SPIE, 9510. ISBN 9781628416312.
[EUV and X-Ray Optics: Synergy Between Laboratory and Space IV. Prague (CZ), 13.04.2015-15.04.2015]
Institutional support: RVO:68378271
Keywords : laser-plasma * plasma radiation * photoionization
OECD category: Optics (including laser optics and quantum optics)

In this work photoionized plasmas were created by irradiation of atomic and molecular gases by soft X-ray and extreme ultraviolet intense radiation pulses. Two different laser-produced plasma sources, employing a low energy Nd:YAG laser system (NL 129) and a high energy iodine laser system (PALS), were used for creation of photoionized plasmas. In both cases the SXR/EUV beam irradiated the gas stream, injected into a vacuum chamber synchronously with the radiation pulse. Radiation spectra, measured for photoionized plasmas produced in Ne and Ar gases, are dominated by L-shell emission lines except the Ne plasma produced using the high energy system where K-shell emission dominates. Additionally electron density measurements were performed by laser interferometry employing a femtosecond laser system synchronized with the irradiating system. Maximum electron density for Ne plasma, induced using the high energy system, reached 2·1018cm-3. In case of employing the low energy system a detection limit was too high for interferometric measurements, thus only an upper estimation for electron density could be made.
Permanent Link: http://hdl.handle.net/11104/0306454