{"title":"LIBS signals statistics for gated and time-integrated acquisition","authors":"V.N. Lednev, P.A. Sdvizhenskii, A.V. Rogachevskaya, S.V. Gudkov, S.M. Pershin, A.F. Bunkin","doi":"10.1016/j.sab.2025.107181","DOIUrl":null,"url":null,"abstract":"<div><div>The impact of gating conditions, self-absorption effect and plasma temperature fluctuations on laser induced breakdown spectroscopy (LIBS) signals distribution functions have been studied in detail since analysis accuracy (error of concentration determination) and sensitivity (limits of detection) are defined by the analytical signal distribution function type. It was demonstrated that both time-resolved and time-integrated atomic line plasma emission signals should be described by the Fréchet distribution function while molecular emission signal corresponded to a normal distribution. The self-absorption effect had a moderate impact on the LIBS signals statistics but did not qualitatively change the results. Plasma temperature fluctuations were normally distributed, but these couldn't explain the observed Fréchet distribution of the LIBS signals.</div></div>","PeriodicalId":21890,"journal":{"name":"Spectrochimica Acta Part B: Atomic Spectroscopy","volume":"228 ","pages":"Article 107181"},"PeriodicalIF":3.2000,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Spectrochimica Acta Part B: Atomic Spectroscopy","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0584854725000667","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"SPECTROSCOPY","Score":null,"Total":0}
引用次数: 0
Abstract
The impact of gating conditions, self-absorption effect and plasma temperature fluctuations on laser induced breakdown spectroscopy (LIBS) signals distribution functions have been studied in detail since analysis accuracy (error of concentration determination) and sensitivity (limits of detection) are defined by the analytical signal distribution function type. It was demonstrated that both time-resolved and time-integrated atomic line plasma emission signals should be described by the Fréchet distribution function while molecular emission signal corresponded to a normal distribution. The self-absorption effect had a moderate impact on the LIBS signals statistics but did not qualitatively change the results. Plasma temperature fluctuations were normally distributed, but these couldn't explain the observed Fréchet distribution of the LIBS signals.
期刊介绍：
Spectrochimica Acta Part B: Atomic Spectroscopy, is intended for the rapid publication of both original work and reviews in the following fields:
Atomic Emission (AES), Atomic Absorption (AAS) and Atomic Fluorescence (AFS) spectroscopy;
Mass Spectrometry (MS) for inorganic analysis covering Spark Source (SS-MS), Inductively Coupled Plasma (ICP-MS), Glow Discharge (GD-MS), and Secondary Ion Mass Spectrometry (SIMS).
Laser induced atomic spectroscopy for inorganic analysis, including non-linear optical laser spectroscopy, covering Laser Enhanced Ionization (LEI), Laser Induced Fluorescence (LIF), Resonance Ionization Spectroscopy (RIS) and Resonance Ionization Mass Spectrometry (RIMS); Laser Induced Breakdown Spectroscopy (LIBS); Cavity Ringdown Spectroscopy (CRDS), Laser Ablation Inductively Coupled Plasma Atomic Emission Spectroscopy (LA-ICP-AES) and Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS).
X-ray spectrometry, X-ray Optics and Microanalysis, including X-ray fluorescence spectrometry (XRF) and related techniques, in particular Total-reflection X-ray Fluorescence Spectrometry (TXRF), and Synchrotron Radiation-excited Total reflection XRF (SR-TXRF).
Manuscripts dealing with (i) fundamentals, (ii) methodology development, (iii)instrumentation, and (iv) applications, can be submitted for publication.
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