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Title: Simultaneous observation of nascent plasma and bubble induced by laser ablation in water with various pulse durations

Abstract

We investigate the effects of pulse duration on the dynamics of the nascent plasma and bubble induced by laser ablation in water. To examine the relationship between the nascent plasma and the bubble without disturbed by shot-to-shot fluctuation, we observe the images of the plasma and the bubble simultaneously by using two intensified charge coupled device detectors. We successfully observe the images of the plasma and bubble during the pulsed-irradiation, when the bubble size is as small as 20 μm. The light-emitting region of the plasma during the laser irradiation seems to exceed the bubble boundary in the case of the short-pulse (30-ns pulse) irradiation, while the size of the plasma is significantly smaller than that of the bubble in the case of the long-pulse (100-ns pulse) irradiation. The results suggest that the extent of the plasma quenching in the initial stage significantly depends on the pulse duration. Also, we investigate how the plasma-bubble relationship in the very early stage affects the shape of the atomic spectral lines observed at the later delay time of 600 ns. The present work gives important information to obtain high quality spectra in the application of underwater laser-induced breakdown spectroscopy, as well as to clarify themore » mechanism of liquid-phase laser ablation.« less

Authors:
; ; ;  [1];  [2]
  1. Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Kyoto 615-8510 (Japan)
  2. Department of Materials Science and Engineering, Graduate School of Engineering, Kyoto University, Kyoto 606-8501 (Japan)
Publication Date:
OSTI Identifier:
22402976
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 117; Journal Issue: 17; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; BREAKDOWN; BUBBLES; CHARGE-COUPLED DEVICES; ELECTROMAGNETIC PULSES; EMISSION SPECTRA; EMISSION SPECTROSCOPY; FLUCTUATIONS; IMAGES; LASER RADIATION; PLASMA; PULSED IRRADIATION; QUENCHING; TIME DELAY; VISIBLE RADIATION; WATER

Citation Formats

Tamura, Ayaka, E-mail: atamura@hiroshima-u.ac.jp, Matsumoto, Ayumu, Nishi, Naoya, Sakka, Tetsuo, E-mail: sakka.tetsuo.2a@kyoto-u.ac.jp, and Fukami, Kazuhiro. Simultaneous observation of nascent plasma and bubble induced by laser ablation in water with various pulse durations. United States: N. p., 2015. Web. doi:10.1063/1.4919729.
Tamura, Ayaka, E-mail: atamura@hiroshima-u.ac.jp, Matsumoto, Ayumu, Nishi, Naoya, Sakka, Tetsuo, E-mail: sakka.tetsuo.2a@kyoto-u.ac.jp, & Fukami, Kazuhiro. Simultaneous observation of nascent plasma and bubble induced by laser ablation in water with various pulse durations. United States. doi:10.1063/1.4919729.
Tamura, Ayaka, E-mail: atamura@hiroshima-u.ac.jp, Matsumoto, Ayumu, Nishi, Naoya, Sakka, Tetsuo, E-mail: sakka.tetsuo.2a@kyoto-u.ac.jp, and Fukami, Kazuhiro. Thu . "Simultaneous observation of nascent plasma and bubble induced by laser ablation in water with various pulse durations". United States. doi:10.1063/1.4919729.
@article{osti_22402976,
title = {Simultaneous observation of nascent plasma and bubble induced by laser ablation in water with various pulse durations},
author = {Tamura, Ayaka, E-mail: atamura@hiroshima-u.ac.jp and Matsumoto, Ayumu and Nishi, Naoya and Sakka, Tetsuo, E-mail: sakka.tetsuo.2a@kyoto-u.ac.jp and Fukami, Kazuhiro},
abstractNote = {We investigate the effects of pulse duration on the dynamics of the nascent plasma and bubble induced by laser ablation in water. To examine the relationship between the nascent plasma and the bubble without disturbed by shot-to-shot fluctuation, we observe the images of the plasma and the bubble simultaneously by using two intensified charge coupled device detectors. We successfully observe the images of the plasma and bubble during the pulsed-irradiation, when the bubble size is as small as 20 μm. The light-emitting region of the plasma during the laser irradiation seems to exceed the bubble boundary in the case of the short-pulse (30-ns pulse) irradiation, while the size of the plasma is significantly smaller than that of the bubble in the case of the long-pulse (100-ns pulse) irradiation. The results suggest that the extent of the plasma quenching in the initial stage significantly depends on the pulse duration. Also, we investigate how the plasma-bubble relationship in the very early stage affects the shape of the atomic spectral lines observed at the later delay time of 600 ns. The present work gives important information to obtain high quality spectra in the application of underwater laser-induced breakdown spectroscopy, as well as to clarify the mechanism of liquid-phase laser ablation.},
doi = {10.1063/1.4919729},
journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 17,
volume = 117,
place = {United States},
year = {2015},
month = {5}
}