Role of Dissolved Gas in Optical Breakdown of Water: Differences between Effects Due to Helium and Other Gases

N. F. Bunkin; B. W. Ninham; V. A. Babenko; N. V. Suyazov; A. A. Sychev

doi:10.1021/jp101657f

Role of Dissolved Gas in Optical Breakdown of Water: Differences between Effects Due to Helium and Other Gases

N. F. Bunkin, B. W. Ninham, V. A. Babenko, N. V. Suyazov, A. A. Sychev

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Abstract

It is shown that water contains defects in the form of heterogeneous optical breakdown centers. Long-living complexes composed of gas and liquid molecules may serve as nuclei for such centers. A new technique for removing dissolved gas from water is developed. It is based on a "helium washing" routine. The structure of helium-washed water is very different from that of water containing dissolved atmospheric gas. It is able to withstand higher optical intensities and temperatures of superheating compared with the nonprocessed ones. The characteristics of plasma spark and values of the breakdown thresholds for processed and nonprocessed samples are given.

Original language	English
Pages (from-to)	7743-7752
Number of pages	10
Journal	Journal of Physical Chemistry B
Volume	114
Issue number	23
DOIs	https://doi.org/10.1021/jp101657f
Publication status	Published - 17 Jun 2010

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AU - Suyazov, N. V.

AU - Sychev, A. A.

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AB - It is shown that water contains defects in the form of heterogeneous optical breakdown centers. Long-living complexes composed of gas and liquid molecules may serve as nuclei for such centers. A new technique for removing dissolved gas from water is developed. It is based on a "helium washing" routine. The structure of helium-washed water is very different from that of water containing dissolved atmospheric gas. It is able to withstand higher optical intensities and temperatures of superheating compared with the nonprocessed ones. The characteristics of plasma spark and values of the breakdown thresholds for processed and nonprocessed samples are given.

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Role of Dissolved Gas in Optical Breakdown of Water: Differences between Effects Due to Helium and Other Gases

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