NDLI: Absolute reactive molecule densities from an argon RF atmospheric pressure plasma jet measured by quantum cascade laser absorption spectroscopy

Content Provider	IEEE Xplore Digital Library
Author	Iseni, S. Weltmann, K.-D. Reuter, S.
Copyright Year	2013
Description	Author affiliation: Centre for Innovation Competence plasmatis, Greifswald, Germany (Iseni, S.; Reuter, S.) \|\| INP Greifswald e.V., Greifswald, Germany (Weltmann, K.-D.)
Abstract	Summary form only given. The non-equilibrium properties of the atmospheric pressure discharges enhance specific and interesting chemistry especially that of reactive nitric-oxide species (RNOS) such as $O_{3}$ and $NO_{x}.$ $O_{3}$ for example has biological effects and was also utilized to sterilize non-living objects [1]. In order to investigate and control the biological reactive species produced, very accurate techniques are required. Moreover, for biomedicine applications, absolute densities have to be known in order to identify and subsequently control the biological effects. A suitable non-invasive method to identify and measure reliably the different species produced by atmospheric pressure plasma is the mid-infrared (IR) absorption spectroscopy [2]. Based on new improvement of quantum cascade laser operating at atmospheric conditions, we are able to investigate an argon radio frequency plasma jet operating in ambient air. Already known for its really good results at low pressure [3], this diagnostic has been adapted to operate at atmospheric conditions by overriding the disturbance of the dominant pressure broadening. The plasma jet is introduced through one side of a multipass cell. A measured spectrum is compared to a simulation in real time. This leads to an accurate determination of the selected molecule concentration within the cell. It is possible to reach a detection limit of 30 particles per billion (ppb) with an accuracy of 40 ppb for NO and $NO_{2}$ molecules. To the knowledge of the authors, this performance has never been reached up to now. The sensitivity of a few ppb allows us to lead further investigation of the chemistry dynamic directly resulting of the different impurities admixed within the feed gas. These impurities affect the net production rate of $O_{3}$ and $NO_{2}$ and the results will be presented as an example. This talk aims to introduce the recent interest of this diagnostic technique and its advantage to measure the plasma chemistry dynamic regarding some selected reactive species. A specific care on $O_{3}$ and $NO_{x}$ production will be presented. Water admixture and its effects on the studied reactive molecules will also be presented and discussed.
Starting Page	1
Ending Page	1
File Size	113978
Page Count	1
File Format	PDF
ISBN	9781467351713
ISSN	07309244
DOI	10.1109/PLASMA.2013.6635049
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2013-06-16
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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