Target holder as a specific sensor for laser-induced plasma ablation

0543188 - FZÚ 2022 RIV NL eng J - Journal Article
Krása, Josef - Nassisi, V. - Klír, D.
Target holder as a specific sensor for laser-induced plasma ablation.
Physics Letters. A. Roč. 385, Jan (2021), č. článku 126980. ISSN 0375-9601. E-ISSN 1873-2429
R&D Projects: GA MŠMT LTT17015; GA ČR GA19-02545S
EU Projects: European Commission(XE) 654148 - LASERLAB-EUROPE
Institutional support: RVO:68378271
Keywords : charge separation * laser ablation * isolated and grounded target * target charging * phases of plasma * ion emission
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 2.707, year: 2021
Method of publishing: Limited access
https://doi.org/10.1016/j.physleta.2020.126980

We have used grounded and isolated targets to measure currents of electrons escaping the pulsed laser-produced plasma. Presented experiments show that the laser-produced plasma is dominated by three phases such as the ignition phase, active and afterglow phases. The last two phases occurring after laser-plasma interaction are influenced by whether the target is isolated from the vacuum chamber or grounded. The voltage arising on the isolated target, which acts as a capacitor, mainly affects the active phase, where collisions of particles still form the plasma. This can cause reduction in ion emissions, as observed for heavier elements. The target charging accompanying the laser ablation was driven by nanosecond laser radiation with fluence ranging between 1–4 J/cm2.
Permanent Link: http://hdl.handle.net/11104/0320457