期刊
CHEMPHYSCHEM
卷 18, 期 9, 页码 1084-1090出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cphc.201601198
关键词
nanoparticles; productivity; pulsed laser ablation; silver; X-ray radiography
资金
- DFG [BA 3580/15-1, PL 325/8-1]
- Helmholtz Association within the programme MML
The ablation yield and bubble-formation process during nanosecond pulsed-laser ablation of silver in water are analysed by stroboscopic videography, time-resolved X-ray radiography and in situ UV/Vis spectroscopy. This process is studied as function of lens-target distance and laser fluence. Both the ablation yield and the bubble-cavitation process exhibit threshold behaviour as a function of fluence, which is linked to the efficiency of coupling of energy at the water/target interface. Although ablation happens below this threshold, quantitative material emission is linked to bubble formation. Above the threshold, both bubble size and ablation show linear behaviour.
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