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Title: Multidiagnostics analysis of ion dynamics in ultrafast laser ablation of metals over a large fluence range

Abstract

The ions dynamics in ultrafast laser ablation of metals is studied over a fluence range spanning from the ablation threshold up to ~75 J/cm2 by means of three established diagnostic techniques. Langmuir probe, Faraday cup and spectrally resolved ICCD imaging simultaneously monitor the laser-produced plasma ions produced during ultrafast laser ablation of a copper target. The fluence dependence of ion yield is analyzed observing the occurrence of three different regimes. Moreover, the specific ion yield shows a maximum at about 4-5 J/cm2, followed by a gradual reduction and a transition to a high-fluence regime above ~50 J/cm2. The fluence variation of the copper ions angular distribution is also analyzed, observing a gradual increase of forward peaking of Cu ions for fluences up to ~10 J/cm2. Then, a broader ion component is observed at larger angles for fluences larger than ~10 J/cm2. Finally, an experimental characterization of the ions angular distribution for several metallic targets (Mg, Al, Cr, Fe, Cu, and W) is carried out at a relatively high fluence of ~66 J/cm2. Interestingly, the ion emission from the volatile metals show a narrow forward peaked distribution and a high peak ion yield compared to the refractory metals. Moreover, the widthmore » of ion angular distributions presents a striking correlation with the peak ion yield.« less

Authors:
; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1184279
Report Number(s):
PNNL-SA-106874
NN2001000
Grant/Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Applied Physics, 117(8):Article No. 083108
Additional Journal Information:
Journal Name: Journal of Applied Physics, 117(8):Article No. 083108
Country of Publication:
United States
Language:
English
Subject:
laser produced plasma; plasma spectroscopy; ion emission; ultrafast laser ablation

Citation Formats

Anoop, K. K., Polek, M. P., Bruzzese, R., Amoruso, S., and Harilal, Sivanandan S. Multidiagnostics analysis of ion dynamics in ultrafast laser ablation of metals over a large fluence range. United States: N. p., 2015. Web. doi:10.1063/1.4913505.
Anoop, K. K., Polek, M. P., Bruzzese, R., Amoruso, S., & Harilal, Sivanandan S. Multidiagnostics analysis of ion dynamics in ultrafast laser ablation of metals over a large fluence range. United States. https://doi.org/10.1063/1.4913505
Anoop, K. K., Polek, M. P., Bruzzese, R., Amoruso, S., and Harilal, Sivanandan S. 2015. "Multidiagnostics analysis of ion dynamics in ultrafast laser ablation of metals over a large fluence range". United States. https://doi.org/10.1063/1.4913505. https://www.osti.gov/servlets/purl/1184279.
@article{osti_1184279,
title = {Multidiagnostics analysis of ion dynamics in ultrafast laser ablation of metals over a large fluence range},
author = {Anoop, K. K. and Polek, M. P. and Bruzzese, R. and Amoruso, S. and Harilal, Sivanandan S.},
abstractNote = {The ions dynamics in ultrafast laser ablation of metals is studied over a fluence range spanning from the ablation threshold up to ~75 J/cm2 by means of three established diagnostic techniques. Langmuir probe, Faraday cup and spectrally resolved ICCD imaging simultaneously monitor the laser-produced plasma ions produced during ultrafast laser ablation of a copper target. The fluence dependence of ion yield is analyzed observing the occurrence of three different regimes. Moreover, the specific ion yield shows a maximum at about 4-5 J/cm2, followed by a gradual reduction and a transition to a high-fluence regime above ~50 J/cm2. The fluence variation of the copper ions angular distribution is also analyzed, observing a gradual increase of forward peaking of Cu ions for fluences up to ~10 J/cm2. Then, a broader ion component is observed at larger angles for fluences larger than ~10 J/cm2. Finally, an experimental characterization of the ions angular distribution for several metallic targets (Mg, Al, Cr, Fe, Cu, and W) is carried out at a relatively high fluence of ~66 J/cm2. Interestingly, the ion emission from the volatile metals show a narrow forward peaked distribution and a high peak ion yield compared to the refractory metals. Moreover, the width of ion angular distributions presents a striking correlation with the peak ion yield.},
doi = {10.1063/1.4913505},
url = {https://www.osti.gov/biblio/1184279}, journal = {Journal of Applied Physics, 117(8):Article No. 083108},
number = ,
volume = ,
place = {United States},
year = {Sat Feb 28 00:00:00 EST 2015},
month = {Sat Feb 28 00:00:00 EST 2015}
}

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Cited by: 38 works
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Works referencing / citing this record:

Particle distribution in transient plasmas generated by ns-laser ablation on ternary metallic alloys
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Molecular formation in the stagnation region of colliding laser-produced plasmas
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