利用双脉冲激光干涉仪研究水中激光诱导空腔和等离子体的形成

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-01-12 DOI:10.3390/physics6010008

Michelle Siemens, B. Emde, Marion Henkel, R. Methling, Steffen Franke, Diego Gonzalez, J. Hermsdorf

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引用次数: 0

摘要

本文论述了水下双脉冲激光诱导击穿光谱（LIBS），这是一种很有前途的分析方法，可用于水深达 6000 米的深海中的元素分析。采用波长为 1064 nm 的双脉冲激光，每个激光脉冲的脉冲能量高达 266 mJ（单脉冲模式），脉冲宽度为 5-7 ns，脉冲延迟范围为 0.5 至 20 µs。在双脉冲 LIBS 方法中，第一个激光脉冲在材料表面形成一个空腔，然后第二个激光脉冲在该空腔中形成等离子体。预计等离子体会受到空腔大小和寿命的影响。因此，我们研究了聚焦位置、脉冲能量和脉冲延迟对浅水区空腔和等离子体形成的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Investigation of Laser-Induced Cavity and Plasma Formation in Water Using Double-Pulse LIBS

This paper deals with double-pulse laser-induced breakdown spectroscopy (LIBS) underwater, which is a promising analytical method for elemental analysis in the deep sea up to a water depth of 6000 m. A double-pulse laser with a wavelength of 1064 nm is used, which provides a pulse energy of up to 266 mJ for each laser pulse (in single pulse mode), a pulse width of 5–7 ns and a pulse delay in the range of 0.5 to 20 µs. In the double-pulse LIBS method, the first laser pulse creates a cavity on the material surface, and then the second laser pulse forms the plasma in this cavity. It is expected that the plasma is affected by the cavity’s size and lifetime. For this reason, the influence of focus position, pulse energy and pulse delay on the cavity and plasma formation at shallow water depth has been investigated.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.