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Title: Dynamics of Femtosecond Laser Ablation Plume Studied With Ultrafast X-ray Absorption Fine Structure Imaging

Abstract

We investigated the dynamic process of an expanding femtosecond laser ablation plume of aluminum generated in an irradiation intensity range of 10{sup 13}-10{sup 15} W/cm{sup 2} with the ultrafast x-ray absorption fine structure (XAFS) imaging technique. The XAFS spectra of the aluminum L{sub II,III} edge of the plume revealed that the plume consists of doubly and singly charged ions, neutral atoms, liquid particles, and possible atomic clusters. Scanning electron microscopy of deposited ablation particles confirmed that the liquid particles corresponds to the spherical nanoparticles with a size ranging from several tens nanometers to approximately 200 nm. The spatiotemporal evolution of the XAFS image of the plume shows the sequential appearance of each ablation particle from aluminum surface according to its ejection velocity. The result suggests that the photomechanical fragmentation process, which was theoretically proposed, is dominant mechanism for the nanoparticle ejection under the irradiation intensity far from the ablation threshold of aluminum. This study clearly demonstrates the potential of our technique for measuring the ultrafast dynamics of femtosecond laser ablation process.

Authors:
; ; ;  [1]
  1. NTT Basic Research Laboratories, Nippon Telegraph and Telephone Corporation, 3-1, Morinosato Wakamiya, Atsugi, Kanagawa 243-0198 (Japan)
Publication Date:
OSTI Identifier:
21457026
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1278; Journal Issue: 1; Conference: International symposium on high power laser ablation 2010, Santa Fe, NM (United States), 18-22 Apr 2010; Other Information: DOI: 10.1063/1.3507158; (c) 2010 American Institute of Physics; Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; 36 MATERIALS SCIENCE; ABLATION; ABSORPTION SPECTRA; ABSORPTION SPECTROSCOPY; ALUMINIUM; ATOMIC CLUSTERS; FINE STRUCTURE; LIQUIDS; NANOSTRUCTURES; PARTICLES; PLUMES; PULSED IRRADIATION; SCANNING ELECTRON MICROSCOPY; SURFACES; X-RAY SPECTRA; X-RAY SPECTROSCOPY; ELECTRON MICROSCOPY; ELEMENTS; FLUIDS; IRRADIATION; METALS; MICROSCOPY; SPECTRA; SPECTROSCOPY

Citation Formats

Oguri, Katsuya, Okano, Yasuaki, Nishikawa, Tadashi, and Nakano, Hidetoshi. Dynamics of Femtosecond Laser Ablation Plume Studied With Ultrafast X-ray Absorption Fine Structure Imaging. United States: N. p., 2010. Web. doi:10.1063/1.3507158.
Oguri, Katsuya, Okano, Yasuaki, Nishikawa, Tadashi, & Nakano, Hidetoshi. Dynamics of Femtosecond Laser Ablation Plume Studied With Ultrafast X-ray Absorption Fine Structure Imaging. United States. https://doi.org/10.1063/1.3507158
Oguri, Katsuya, Okano, Yasuaki, Nishikawa, Tadashi, and Nakano, Hidetoshi. 2010. "Dynamics of Femtosecond Laser Ablation Plume Studied With Ultrafast X-ray Absorption Fine Structure Imaging". United States. https://doi.org/10.1063/1.3507158.
@article{osti_21457026,
title = {Dynamics of Femtosecond Laser Ablation Plume Studied With Ultrafast X-ray Absorption Fine Structure Imaging},
author = {Oguri, Katsuya and Okano, Yasuaki and Nishikawa, Tadashi and Nakano, Hidetoshi},
abstractNote = {We investigated the dynamic process of an expanding femtosecond laser ablation plume of aluminum generated in an irradiation intensity range of 10{sup 13}-10{sup 15} W/cm{sup 2} with the ultrafast x-ray absorption fine structure (XAFS) imaging technique. The XAFS spectra of the aluminum L{sub II,III} edge of the plume revealed that the plume consists of doubly and singly charged ions, neutral atoms, liquid particles, and possible atomic clusters. Scanning electron microscopy of deposited ablation particles confirmed that the liquid particles corresponds to the spherical nanoparticles with a size ranging from several tens nanometers to approximately 200 nm. The spatiotemporal evolution of the XAFS image of the plume shows the sequential appearance of each ablation particle from aluminum surface according to its ejection velocity. The result suggests that the photomechanical fragmentation process, which was theoretically proposed, is dominant mechanism for the nanoparticle ejection under the irradiation intensity far from the ablation threshold of aluminum. This study clearly demonstrates the potential of our technique for measuring the ultrafast dynamics of femtosecond laser ablation process.},
doi = {10.1063/1.3507158},
url = {https://www.osti.gov/biblio/21457026}, journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1278,
place = {United States},
year = {Fri Oct 08 00:00:00 EDT 2010},
month = {Fri Oct 08 00:00:00 EDT 2010}
}