0520798 - FZÚ 2021 RIV GB eng J - Journal Article
Klimešová, Eva - Kulyk, Olena - Gu, Yanjun - Dittrich, L. - Korn, Georg - Hajdu, Janos - Krikunova, Maria - Andreasson, Jakob
Plasma channel formation in NIR laser-irradiated carrier gas from an aerosol nanoparticle injector.
Scientific Reports. Roč. 9, č. 1 (2019), s. 1-9, č. článku 8851. ISSN 2045-2322. E-ISSN 2045-2322
R&D Projects: GA MŠMT LQ1606
Research Infrastructure: ELI Beamlines II - 90094
Institutional support: RVO:68378271
Keywords : X-ray-diffraction * structural dynamics * femtosecond * beam * generation * transmission * nanospheres * scattering
OECD category: Fluids and plasma physics (including surface physics)
Impact factor: 3.998, year: 2019
Method of publishing: Open access

The injector consists of a nebuliser, a differential pumping unit, and an aerodynamic lens to create and deliver a focused particle beam to the interaction point inside a vacuum chamber. The tightest focus of the particle beam is close to the injector tip. The density of the focusing carrier gas is high at this point. We show here how this gas interacts with a near infrared laser pulse (800 nm wavelength, 120 fs pulse duration) at intensities approaching 1016 Wcm−2. We observe acceleration of gas ions to kinetic energies of 100s eV and study their energies as a function of the carrier gas density. Our results indicate that field ionisation by the intense near-infrared laser pulse opens up a plasma channel behind the laser pulse.
Permanent Link: http://hdl.handle.net/11104/0305465