Investigating the Influence of Combination of Magnetic Field
and Various Atmosphere Conditions on LIBS Signal Enhancement

a 2016

Investigating the Influence of Combination of Magnetic Field and Various Atmosphere Conditions on LIBS Signal Enhancement

PROCHAZKA, David; Katarína SKOČOVSKÁ; Pavel POŘÍZKA; Jan NOVOTNÝ; Jakub KLUS et al.

Základní údaje

Originální název

Investigating the Influence of Combination of Magnetic Field and Various Atmosphere Conditions on LIBS Signal Enhancement

Autoři

PROCHAZKA, David; Katarína SKOČOVSKÁ; Pavel POŘÍZKA; Jan NOVOTNÝ; Jakub KLUS; Jozef KAISER; Aleš HRDLIČKA a Karel NOVOTNÝ

Vydání

2016 Winter Conference on Plasma Spectrochemistry, 2016

Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10406 Analytical chemistry

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14740/16:00089399

Organizační jednotka

Středoevropský technologický institut

Klíčová slova anglicky

LIBS; Signal enhancement; magnetic field

Změněno: 15. 2. 2016 15:49, doc. Mgr. Karel Novotný, Ph.D.

Anotace

V originále

Laser-induced breakdown spectroscopy (LIBS) is a method with great potential in numerous applications and with the capability to detect broad spectrum of elements. Despite the improvement in instrumentation, it still lacks the appropriate sensitivity for some elements, such as detection of halogens. One of the possibilities how to improve the limits of detection is using reduced ambient pressure atmosphere. Consequently, allowing the species to be easily excited and then to emit characteristic radiation. However, using low-pressure ambient atmosphere leads to fast expansion of plasma contributing to lower plasma temperature and electron density. In this work we propose the utilization of magnetic field in order to confine the plasma plume and thus to increase the plasma temperature, electron density resulting to the detected signal. One of the studied parameters was a plasma size for different combinations of ambient pressures and magnetic fields. Concurrently the influence of pressure and magnetic field on signal and background of selected spectral lines was investigated. Optimization of laser intensity and gate delay was performed for each combination of ambient pressure and magnetic field. Moreover for the optimal conditions was monitored plasma temperature using Saha-Boltzmann plots.

Návaznosti

ED1.1.00/02.0068, projekt VaV

Název: CEITEC - central european institute of technology

Citovat

PROCHAZKA, David; Katarína SKOČOVSKÁ; Pavel POŘÍZKA; Jan NOVOTNÝ; Jakub KLUS; Jozef KAISER; Aleš HRDLIČKA a Karel NOVOTNÝ. Investigating the Influence of Combination of Magnetic Field and Various Atmosphere Conditions on LIBS Signal Enhancement. In 2016 Winter Conference on Plasma Spectrochemistry. 2016.

@proceedings{1335836,
   author = {Prochazka, David and Skočovská, Katarína and Pořízka, Pavel and Novotný, Jan and Klus, Jakub and Kaiser, Jozef and Hrdlička, Aleš and Novotný, Karel},
   booktitle = {2016 Winter Conference on Plasma Spectrochemistry},
   keywords = {LIBS; Signal enhancement; magnetic field},
   language = {eng},
   title = {Investigating the Influence of Combination of Magnetic Field and Various Atmosphere Conditions on LIBS Signal Enhancement},
   year = {2016}
}

TY  - CONF
ID  - 1335836
AU  - Prochazka, David - Skočovská, Katarína - Pořízka, Pavel - Novotný, Jan - Klus, Jakub - Kaiser, Jozef - Hrdlička, Aleš - Novotný, Karel
PY  - 2016
TI  - Investigating the Influence of Combination of Magnetic Field and Various Atmosphere Conditions on LIBS Signal Enhancement
KW  - LIBS
KW  - Signal enhancement
KW  - magnetic field
N2  - Laser-induced breakdown spectroscopy (LIBS) is a method with great potential in numerous applications and with the capability to detect broad spectrum of elements. Despite the improvement in instrumentation, it still lacks the appropriate sensitivity for some elements, such as detection of halogens. One of the possibilities how to improve the limits of detection is using reduced ambient pressure atmosphere. Consequently, allowing the species to be easily excited and then to emit characteristic radiation. However, using low-pressure ambient atmosphere leads to fast expansion of plasma contributing to lower plasma temperature and electron density. In this work we propose the utilization of magnetic field in order to confine the plasma plume and thus to increase the plasma temperature, electron density resulting to the detected signal. One of the studied parameters was a plasma size for different combinations of ambient pressures and magnetic fields. Concurrently the influence of pressure and magnetic field on signal and background of selected spectral lines was investigated. Optimization of laser intensity and gate delay was performed for each combination of ambient pressure and magnetic field. Moreover for the optimal conditions was monitored plasma temperature using Saha-Boltzmann plots.
ER  -

PROCHAZKA, David; Katarína SKOČOVSKÁ; Pavel POŘÍZKA; Jan NOVOTNÝ; Jakub KLUS; Jozef KAISER; Aleš HRDLIČKA a Karel NOVOTNÝ. Investigating the Influence of Combination of Magnetic Field and Various Atmosphere Conditions on LIBS Signal Enhancement. In \textit{2016 Winter Conference on Plasma Spectrochemistry}. 2016.

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