Emission properties of ns and ps laser-induced soft x-ray sources using pulsed gas jets

0421060 - ÚFP 2014 RIV US eng J - Článek v odborném periodiku
Müller, M. - Kühl, F.-Ch. - Großmann, P. - Vrba, Pavel - Mann, K.
Emission properties of ns and ps laser-induced soft x-ray sources using pulsed gas jets.
Optics Express. Roč. 21, č. 10 (2013), s. 12831-12842. ISSN 1094-4087
Institucionální podpora: RVO:61389021
Klíčová slova: Soft x-rays * Spectra * Plasmas
Kód oboru RIV: BL - Fyzika plazmatu a výboje v plynech
Impakt faktor: 3.525, rok: 2013
http://www.opticsinfobase.org/oe/abstract.cfm?uri=oe-21-10-12831

The influence of the pulse duration on the emission characteristics of nearly debris-free laser-induced plasmas in the soft x-ray region ( ~1-5 nm) was investigated, using six different target gases from a pulsed jet. Compared to ns pulses of the same energy, a ps laser generates a smaller, more strongly ionized plasma, being about 10 times brighter than the ns laser plasma. Moreover, the spectra are considerably shifted towards shorter wavelengths. Electron temperatures and densities of the plasma are obtained by comparing the spectra with model calculations using a magneto-hydrodynamic code.
Trvalý link: http://hdl.handle.net/11104/0227512