Multi-mode velocity distribution of ions in UV laser-induced plasma plumes

0352529 - FZÚ 2011 RIV GB eng J - Journal Article
Lorusso, A. - Nassisi, V. - Krása, Josef - Velardi, L.
Multi-mode velocity distribution of ions in UV laser-induced plasma plumes.
Radiation Effects and Defects in Solids. Roč. 165, 6-10 (2010), s. 495-500. ISSN 1042-0150. E-ISSN 1029-4953
R&D Projects: GA MŠMT(CZ) LC528
EU Projects: European Commission(XE) 228334 - LASERLAB-EUROPE
Institutional research plan: CEZ:AV0Z10100523
Keywords : UV laser ablation * laser-induced plasma * ambipolar electric field
Subject RIV: BL - Plasma and Gas Discharge Physics
Impact factor: 0.660, year: 2010

Plasmas induced by UV laser ablation were studied and analysed using time-of-flight measurements. A KrF laser beam of 23 ns full width at half maximum time duration was focused on Si and Nb targets with moderate laser irradiance of 10^8 W/cm^2. The analysis of time-resolved ion collector signals has revealed that the ambipolar electric field significantly influences the expansion of ions carrying various charges into the vacuum and allows to separate the thermal and centre-of-mass motions of ions.
Permanent Link: http://hdl.handle.net/11104/0192019