Effect of grounding and isolation of the target on the emissive properties of laser-produced plasma

0545981 - FZÚ 2022 RIV US eng J - Článek v odborném periodiku
Krása, Josef - Nassisi, V. - Klír, D.
Effect of grounding and isolation of the target on the emissive properties of laser-produced plasma.
Physics of Plasmas. Roč. 28, č. 9 (2021), č. článku 092104. ISSN 1070-664X. E-ISSN 1089-7674
Grant CEP: GA ČR GA19-02545S; GA MŠMT LTT17015
GRANT EU: European Commission(XE) 654148 - LASERLAB-EUROPE
Institucionální podpora: RVO:68378271
Klíčová slova: laser ablation * effect of target grounding and isolation
Obor OECD: Fluids and plasma physics (including surface physics)
Impakt faktor: 2.357, rok: 2021
Způsob publikování: Omezený přístup
https://doi.org/10.1063/5.0049988

During laser ablation, the escaping electrons generate a net positive charge at the target surface. Depending on whether the target is grounded or isolated from the vacuum chamber, either this positive charge is neutralized by the current flowing from the ground or generates a voltage on the isolated target corresponding to its capacitance. Under certain experimental conditions, it can be expected that this charge can retroactively affect not only the expansion velocity of the emitted ions and their number, but also the total number of escaped electrons. In this work, we deal with ion emission and measuring the voltage arisen on an isolated target or the current of electrons flowing between the ground and a grounded target. For the first time, this made it possible to estimate the ratio of the number of electrons released from plasma to the number of electrons stopped by a potential barrier.
Trvalý link: http://hdl.handle.net/11104/0322618