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Two-dimensional space-resolved emission spectroscopy of laser ablation plasma in water
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10.1063/1.4789968
/content/aip/journal/jap/113/5/10.1063/1.4789968
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/5/10.1063/1.4789968
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Experimental setup for two-dimensional space-resolved emission spectroscopy of laser-induced plasma in water. The image of the plasma can be measured simultaneously.

Image of FIG. 2.
FIG. 2.

Example of the spectral image obtained by the space-resolved emission spectroscopy. The image was obtained by the spectrograph, of which four optical fibers are aligned on the entrance slit. Each band of the image corresponds to a single fiber.

Image of FIG. 3.
FIG. 3.

Emission image of the laser ablation plasma produced on a Cu plate in 5 mM NaCl aqueous solution. The pulse width was 100 ns and the pulse energy was 6 mJ. The emission image was measured at the delay time of 1000 ns from the laser irradiation. The gate width of the ICCD was set to 650 ns. The circles (A)–(D) show the detecting positions where the emission is detected by the four fibers.

Image of FIG. 4.
FIG. 4.

Typical shadowgraph image of the cavitation bubble produced on a Cu plate in 5 mM NaCl aqueous solution. The pulse width was 100 ns and the pulse energy was 6 mJ. The shadowgraph image was measured at the delay time of 1000 ns from the laser irradiation. The gate width of the ICCD was set to 10 ns. The spots of detection (A)–(D) are marked.

Image of FIG. 5.
FIG. 5.

Emission spectra (solid line) of the laser ablation plasma produced on a Cu plate in 5 mM NaCl aqueous solution and the best-fit theoretical spectra (broken line). The results (a)–(d) show the emission spectra obtained at each position (A)–(D), respectively. The pulse width was 100 ns and the pulse energy was 6 mJ. The emission spectra were measured at the delay time of 1000 ns from the laser irradiation. The gate width of the ICCD was set to 650 ns.

Image of FIG. 6.
FIG. 6.

Temperature (a) and atomic density ratio (b) obtained as the best-fit parameters at each position (A)–(D). The distance is measured from the center (A).

Image of FIG. 7.
FIG. 7.

Relative densities of Cu (a) and Na (b) at each position (A)–(D). They are normalized to the value of (A).

Image of FIG. 8.
FIG. 8.

Emission spectra of the laser ablation plasma produced on a Cu plate in 5 mM NaCl aqueous solution at various delay times. The pulse width was 100 ns and the pulse energy was 6 mJ. The delay times from the laser irradiation were 1000, 1250, and 1500 ns. The gate width of the ICCD was set to 150 ns.

Image of FIG. 9.
FIG. 9.

Temperature (a) and atomic density ratio (b) obtained as the best-fit parameters. They are plotted as a function of the delay time.

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/content/aip/journal/jap/113/5/10.1063/1.4789968
2013-02-04
2014-04-21
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Two-dimensional space-resolved emission spectroscopy of laser ablation plasma in water
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/5/10.1063/1.4789968
10.1063/1.4789968
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