Application of LIBS: Elemental mapping

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26620%2F16%3APU140086" target="_blank" >RIV/00216305:26620/16:PU140086 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216224:14310/16:00093788

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Application of LIBS: Elemental mapping

Popis výsledku v původním jazyce

Scan analysis by Laser-Induced Breakdown Spectroscopy (LIBS) is usually performed as sampling in the series of single points (ablation craters), in one, two, or even three directions. The spatial (lateral and depth) resolution is then determined by the size, depth and spacing of the ablation craters. Tightly focused short wavelength laser pulses enable production of both small in diameter and depth ablation craters. However, for the smallest LIBS ablation craters, the emission intensities mainly in single-pulse configuration are usually low, and not sufficient especially for minor and trace elements detection. Double-pulsed LIBS techniques may significantly enhance the signal even if a small amount of material per pulse is ablated. Therefore, double-pulse LIBS instrumentation equipped with UV ablation lasers and IR lasers in reheating mode seem to be suitable for achieving low detection limits with high spatial-resolution. LIBS ablation chambers enable further improvement of figures of merit using the atmosphere of noble gases [1]. Because of the fact that it represents a relatively simple way for fast chemical analysis (even in situ), LIBS has several interesting applications, including e.g., compositional mapping of geological samples. The LIBS potential for discrimination of geological materials using principal component analysis (PCA) was recently examined [2]. Such approach can also be applied in stand-off mode as it was demonstrated e.g., in cases of fast classification of brick samples or fast identification of biominerals [3, 4]. In laboratory conditions, LIBS is a promising alternative to much more complicated, expensive, and slower laser-ablations connected to inductively coupled plasma mass spectroscopy (LA-ICP-MS) techniques [5]. Moreover, LIBS can be effectively combined with X-ray computed tomography (CT). CT provides structure information and a 3D model of the sample, in which materials of different physical properties are distinguished, and LIBS can

Název v anglickém jazyce

Application of LIBS: Elemental mapping

Popis výsledku anglicky

Scan analysis by Laser-Induced Breakdown Spectroscopy (LIBS) is usually performed as sampling in the series of single points (ablation craters), in one, two, or even three directions. The spatial (lateral and depth) resolution is then determined by the size, depth and spacing of the ablation craters. Tightly focused short wavelength laser pulses enable production of both small in diameter and depth ablation craters. However, for the smallest LIBS ablation craters, the emission intensities mainly in single-pulse configuration are usually low, and not sufficient especially for minor and trace elements detection. Double-pulsed LIBS techniques may significantly enhance the signal even if a small amount of material per pulse is ablated. Therefore, double-pulse LIBS instrumentation equipped with UV ablation lasers and IR lasers in reheating mode seem to be suitable for achieving low detection limits with high spatial-resolution. LIBS ablation chambers enable further improvement of figures of merit using the atmosphere of noble gases [1]. Because of the fact that it represents a relatively simple way for fast chemical analysis (even in situ), LIBS has several interesting applications, including e.g., compositional mapping of geological samples. The LIBS potential for discrimination of geological materials using principal component analysis (PCA) was recently examined [2]. Such approach can also be applied in stand-off mode as it was demonstrated e.g., in cases of fast classification of brick samples or fast identification of biominerals [3, 4]. In laboratory conditions, LIBS is a promising alternative to much more complicated, expensive, and slower laser-ablations connected to inductively coupled plasma mass spectroscopy (LA-ICP-MS) techniques [5]. Moreover, LIBS can be effectively combined with X-ray computed tomography (CT). CT provides structure information and a 3D model of the sample, in which materials of different physical properties are distinguished, and LIBS can

Druh

C - Kapitola v odborné knize

CEP obor

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OECD FORD obor

10406 - Analytical chemistry

Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název knihy nebo sborníku

Horizons in World Physics

ISBN

978-16-3484-194-8

Počet stran výsledku

24

Strana od-do

1-24

Počet stran knihy

299

Název nakladatele

Neuveden

Místo vydání

Neuveden

Kód UT WoS kapitoly

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