Double layer acceleration of ions with differently charged states in a laser induced plasma

0574312 - FZÚ 2024 RIV DE eng J - Journal Article
Yao, X. - Schneider, C.W. - Bulgakova, Nadezhda M. - Bulgakov, Alexander - Lippert, T.
Double layer acceleration of ions with differently charged states in a laser induced plasma.
Applied Physics A - Materials Science & Processing. Roč. 129, July (2023), č. článku 590. ISSN 0947-8396. E-ISSN 1432-0630
R&D Projects: GA MŠMT EF15_003/0000445
Grant - others:OP VVV - BIATRI(XE) CZ.02.1.01/0.0/0.0/15_003/0000445
Institutional support: RVO:68378271
Keywords : pulsed laser deposition * thin flms * plasma spectroscopy * kinetic energy distribution
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 2.7, year: 2022
Method of publishing: Open access

The electric feld driven acceleration of plasma ions is an intrinsic efect in laser-induced plasma plumes and is responsible for the generation of high-energy ions. At high laser fuences (≥2 J/cm2 ), multiply charged ions are formed and afect the plume expansion dynamics. In this paper, we used kinetic energy-resolved mass spectrometry to investigate the relative abundance and kinetic energy distributions of singly- and doubly-charged ions produced by KrF-laser ablation of nine diferent oxide targets. The doubly charged metal ions with a lower mass-to-charge (m/z) ratio show narrow energy distributions at high average kinetic energies coinciding with the cutof energies for the singly-charged ion distributions. The observation suggests that the recombination of higher charged ions plays a prominent role in the formation of the high-energy tail for singly-charged ions.
Permanent Link: https://hdl.handle.net/11104/0344655