Sub-Nanosecond Laser Induced Plasma as Water Window Radiation Source.

0480208 - ÚFP 2018 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Vrbová, M. - Vrba, Pavel
Sub-Nanosecond Laser Induced Plasma as Water Window Radiation Source.
2017. In: Proceedings of the 3rd International Workshop on Frontiers of X&XUV Optics and its Applications, 3rd IW FX & XUVOA. Prague: Institute of Plasma Physics Czech Academy of Sciences, 2017 - (Koláček, K.; Sobota, J.), č. článku O-15. ISBN 978-80-870026-09-0.
[International Workshop on Frontiers of X&XUV Optics and its Applications 2017, 3rd IW FX & XUVOA /3./. Prague (CZ), 04.10.2017-06.10.2017]
Grant CEP: GA MŠMT LG15013
Institucionální podpora: RVO:61389021
Klíčová slova: RMHD simulations * gas puff * laser plasma water window sources
Obor OECD: Optics (including laser optics and quantum optics)

Laser plasma created in a krypton gas puff target is studied as a source of radiation in the water window spectral range (lambda= 2.3 - 4.4 nm). The spatial development of the plasma induced by a sub-nanosecond Nd:YAG laser pulse focused on the gas puff target is modeled using 2d RMHD code Z*. Space-time distributions of plasma quantities, namely electron temperature, electron density, mass density and plasma expansion velocity were evaluated. Instantaneous spectra during the laser pulse and during plasma decay period are also calculated. Temporal evolutions of the krypton ions relative populations prove that ions from Kr21+ and Kr22+ are responsible for dominant spectral intensity emitted at a wavelength around lambda= 3 nm. Evaluated time resolved spectra are compared with time integrated spectra obtained experimentally.
Trvalý link: http://hdl.handle.net/11104/0276077