Pulsed laser ablation of binary compounds: effect of time delay in component evaporation on ablation plume expansion

0541925 - FZÚ 2022 RIV GB eng J - Journal Article
Morozov, A.A. - Starinskiy, S.V. - Bulgakov, Alexander
Pulsed laser ablation of binary compounds: effect of time delay in component evaporation on ablation plume expansion.
Journal of Physics D-Applied Physics. Roč. 54, č. 17 (2021), č. článku 175203. ISSN 0022-3727. E-ISSN 1361-6463
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 : laser ablation plume * gold–silver alloy * material volatility * delayed evaporation * time-of-flight distributions * mass spectrometry * direct simulation Monte Carlo
OECD category: Optics (including laser optics and quantum optics)
Impact factor: 3.409, year: 2021
Method of publishing: Limited access
https://doi.org/10.1088/1361-6463/abdb6c

Pulsed las. abl. of compound materials occurs with delayed evaporation of a less volatile component, the effect of the delay on abl. plume expansion remains virtually unexplored.We have performed an experiment. and theoretic. study of the delayed evaporation effect using a plume produced by nanosec. las. abl. of a gold–silver alloy in a vacuum and comparing it with abl. of gold and silver targets.The plume expansion dynamics are investigated by time-of-flight mass spectrometry and direct simulation Monte Carlo,while the laser-induced target evaporation is analyzed using a thermal model.A dramatic effect of the delay time on the average kinetic energy of the plume particles,esp. for the less volatile gold,is demonstrated and the main collisional processes governing the two-component plume expansion under the condit. of delayed evaporation are revealed.Based on comparison of experimental and DSMC data,the delay of the gold evaporation onset is estimated as approximately 0.6ns.
Permanent Link: http://hdl.handle.net/11104/0319425