High-throughput underwater elemental analysis by μJ-laser-induced breakdown spectroscopy at a kHz repetition rate: part II, understanding the high repetition-rate from a fundamental perspective,Journal of Analytical Atomic Spectrometry

当前位置： X-MOL 学术 › J. Anal. At. Spectrom. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

High-throughput underwater elemental analysis by μJ-laser-induced breakdown spectroscopy at a kHz repetition rate: part II, understanding the high repetition-rate from a fundamental perspective
Journal of Analytical Atomic Spectrometry ( IF 3.1 ) Pub Date : 2020-09-18 , DOI: 10.1039/d0ja00291g
Boyang Xue _{1,

2,

3,

4,

5} , Yi You _{4,

5,

6} , Jens Riedel _{4,

5,

6}

Affiliation

The technological advances in lasers enabled the wide application of laser-induced breakdown spectroscopy (LIBS) as a powerful analytical means for elemental analyses. Rather than commonly used lasers that operate at several to several-tens of Hz, the high repetition rate ones that operate at tens of kHz showed superior analytical advantages while implying unique excitation pathways. Specifically, the production of excited atomic hydrogen and oxygen, which can serve as internal standards, is quite different from that in commonly reported double-pulse LIBS. In this part of the work, it was found that the atomic emitters stemming from water are not related to cavitation bubbles. Moreover, the emitter productions of dissolved species, e.g., Na⁺, and water-related species, e.g., H-α, are two distinctive mechanisms. Towards analytical applications of the high repetition-rate system, the fundamental investigation can provide important guidelines to address real-life challenges. In this part of the work, the high repetition-rate regime of operation is explored from a more kinetic perspective.

中文翻译：

μJ激光诱导击穿光谱仪以kHz重复频率进行高通量水下元素分析：第二部分，从基本的角度理解高重复率

激光技术的进步使激光诱导击穿光谱法（LIBS）广泛地用作元素分析的强大分析手段。而不是工作在几十到几十赫兹的常用激光器，而是工作在几十赫兹的高重复频率的激光器显示了优越的分析优势，同时暗示了独特的激发途径。具体而言，可以用作内标的激发原子氢和氧的生成与通常报道的双脉冲LIBS完全不同。在这部分工作中，发现源于水的原子发射器与空化气泡无关。而且，溶解物质（例如Na ⁺）和与水有关的物质的发射极产物，例如，H-α是两种不同的机制。对于高重复率系统的分析应用，基础研究可以为解决现实生活中的挑战提供重要指导。在这部分工作中，从更动力学的角度探讨了高重复率的操作方式。

更新日期：2020-11-03

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11