Absolute OH density measurements in a CO2–H2O glow discharge by laser-induced fluorescence spectroscopy

Autor:	Maik Budde, Luca Matteo Martini, Sara Quercetti, Matteo Ceppelli, Richard Engeln
Přispěvatelé:	Plasma-based gas conversion, Plasma & Materials Processing, EIRES Chem. for Sustainable Energy Systems
Rok vydání:	2022
Předmět:	OH LIF water admixture CO conversion glow discharge calibration Condensed Matter Physics
Zdroj:	Plasma Sources Science and Technology, 31(5):055002. Institute of Physics
ISSN:	1361-6595 0963-0252
DOI:	10.1088/1361-6595/ac5ecc
Popis:	Time-resolved absolute OH density measurements in a millisecond-pulsed DC glow discharge from carbon dioxide with water admixture, by laser-induced fluorescence (LIF) spectroscopy, are presented. For this purpose, a novel technique is suggested to calibrate the OH LIF setup by means of two-photon absorption LIF spectroscopy measurements on a CO-filled gas cell. OH densities in the order of 1 × 1018 m−3 are reported at a pressure of 6.67 mbar with a water admixture of 20% and a discharge current of 50 mA. Furthermore, the time evolution of the CO2 conversion is determined from collision energy transfer LIF and validated against the literature. The time-dependent rotational temperature of OH is obtained with LIF thermometry.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::94938c88c9fc10c6bcfa153af91479c2 https://doi.org/10.1088/1361-6595/ac5ecc Zobrazit plný text záznamu