Excitation of Mercury Atoms in Nitrogen Post-Discharge

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F14%3APU88211" target="_blank" >RIV/00216305:26310/14:PU88211 - isvavai.cz</a>

Výsledek na webu

<a href="http://iopscience.iop.org/article/10.1088/1742-6596/516/1/012005" target="_blank" >http://iopscience.iop.org/article/10.1088/1742-6596/516/1/012005</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1742-6596/516/1/012005" target="_blank" >10.1088/1742-6596/516/1/012005</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Excitation of Mercury Atoms in Nitrogen Post-Discharge

Popis výsledku v původním jazyce

The work presents results obtained during spectroscopic observations of nitrogen DC flowing post-discharges at the total gas pressure of 1000 Pa and at the discharge current of 100 mA. Mercury traces were introduced into the system using auxiliary pure nitrogen flow enriched by mercury vapor. A very low mercury concentration of 3.7 ppb was introduced into the system before the active discharge. The strong quenching of nitrogen pink afterglow was observed but no mercury lines were recorded. Moreover, the vibrational distributions of nitrogen excited states were nearly unchanged. Based on these results, the new experimental set up was created. The introduction point of mercury vapor with higher concentration of 600 ppm was movable during the post discharge up to decay time of 40 ms. Besides three nitrogen spectral systems (first and second positive and first negative), NO-beta and NO-gamma bands, the mercury line at 254 nm was recorded at these conditions. Its intensity was dependent on the mercury vapor introduction position as well as on the mercury concentration. No other mercury lines were observed. The creation of mercury 3P1 state that is the upper state of the observed mercury spectral line is possible by the resonance excitation energy transfer form vibrationally excited nitrogen ground state N2 (X, v = 19). The observed results should form a background for the development of a new titration technique used for the highly vibrationally excited nitrogen ground state molecules determination.

Název v anglickém jazyce

Excitation of Mercury Atoms in Nitrogen Post-Discharge

Popis výsledku anglicky

The work presents results obtained during spectroscopic observations of nitrogen DC flowing post-discharges at the total gas pressure of 1000 Pa and at the discharge current of 100 mA. Mercury traces were introduced into the system using auxiliary pure nitrogen flow enriched by mercury vapor. A very low mercury concentration of 3.7 ppb was introduced into the system before the active discharge. The strong quenching of nitrogen pink afterglow was observed but no mercury lines were recorded. Moreover, the vibrational distributions of nitrogen excited states were nearly unchanged. Based on these results, the new experimental set up was created. The introduction point of mercury vapor with higher concentration of 600 ppm was movable during the post discharge up to decay time of 40 ms. Besides three nitrogen spectral systems (first and second positive and first negative), NO-beta and NO-gamma bands, the mercury line at 254 nm was recorded at these conditions. Its intensity was dependent on the mercury vapor introduction position as well as on the mercury concentration. No other mercury lines were observed. The creation of mercury 3P1 state that is the upper state of the observed mercury spectral line is possible by the resonance excitation energy transfer form vibrationally excited nitrogen ground state N2 (X, v = 19). The observed results should form a background for the development of a new titration technique used for the highly vibrationally excited nitrogen ground state molecules determination.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

<a href="/cs/project/GA202%2F08%2F1106" target="_blank" >GA202/08/1106: Studium nerovnovážné kinetiky plazmochemických reakcí v atmosférických plynech za sníženého tlaku s ohledem na využití v analytické chemii</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

Journal of Physics: Conference Series

ISSN

1742-6588

e-ISSN

1742-6596

Svazek periodika

516

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

012005-012005

Kód UT WoS článku

000344464700005

EID výsledku v databázi Scopus

2-s2.0-84903444311