D 2014

Excitation of mercury atoms in nitrogen post-discharge

KRČMA, František, Ivana BOCKOVÁ, Věra MAZÁNKOVÁ, Ivo SOURAL, Aleš HRDLIČKA et. al.

Basic information

Original name

Excitation of mercury atoms in nitrogen post-discharge

Name in Czech

Exitace atomů rtuti v dohasínajícím dusíkovém výboji

Authors

KRČMA, František, Ivana BOCKOVÁ, Věra MAZÁNKOVÁ, Ivo SOURAL, Aleš HRDLIČKA and Viktor KANICKÝ

Edition

Bristol, 4th International Workshop & Summer School on Plasma Physics 2010, p. 1-10, 10 pp. 2014

Publisher

IOP Publishing

Other information

Language

English

Type of outcome

Stať ve sborníku

Field of Study

10305 Fluids and plasma physics

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

není předmětem státního či obchodního tajemství

Publication form

electronic version available online

References:

Organization unit

Central European Institute of Technology

ISSN

DOI

UT WoS

000344464700005

Keywords (in Czech)

poolingové reakce; růžové dohasínání; n-2; chemie; kinetika; ionizace; výboj; směsi; model

Keywords in English

energy-pooling reactions; pink afterglow; n-2; chemistry; kinetics; ionization; discharge; mixtures;model

Tags

Změněno: 27/3/2015 12:29, Martina Prášilová

Abstract

V originále

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 P-3(1) 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 N-2 (X (1)Sigma(+)(g), 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.

Links

ED1.1.00/02.0068, research and development project
Name: CEITEC - central european institute of technology
GA202/05/0111, research and development project
Name: Studium kinetických procesů v dohasínajícím dusíkovém plazmatu s ohledem na jejich využití v chemické analýze
Investor: Czech Science Foundation, Study of kinetic processes in nitrogen post-discharge with respect to their use in chemical analysis
GA202/08/1106, research and development project
Name: Studium nerovnovážné kinetiky plazmochemických reakcí v atmosférických plynech za sníženého tlaku s ohledem na využití v analytické chemii
Investor: Czech Science Foundation, Study of nonequilibrium kinetics of plasmachemical reactions in atmospheric gases at reduced pressure for applications in analytical chemistry