NDLI: Effects of boundaries on plasma jet propagation

Content Provider	IEEE Xplore Digital Library
Author	Akman, M. Arda Laroussi, Mounir
Copyright Year	2012
Description	Author affiliation: Laser and Plasma Engineering Institute, Old Dominion University, Norfolk, VA, USA (Akman, M. Arda; Laroussi, Mounir)
Abstract	Summary form only given. Atmospheric pressure low temperature plasma jets were found to consist of ionization waves called “Plasma Bullets” that travel in ambient air at supersonic speeds. [1] Plasma jet's behavioral changes are known to depend on the background gas pressure the bullets propagate in. [2] Our recent study shows that this dependence is not only related to the background gas pressure but to a physical boundary layer that confines the working gas channel in which the plasma bullets can continue to propagate regardless of the pressure. It is observed that at a constant low pressure inside a vacuum chamber (<100Torr) filled with Helium only, plasma bullet propagation is not present; however inside the connecting tube in which the Helium is flown to the chamber, plasma bullet propagation is visible. The physical boundary created by this tube enables the bullets to propagate while the lack thereof inside the chamber results in diffuse plasma at the same pressure. This boundary does not need to be an object that surrounds the gas flow. This is evident when a Helium gas channel is formed in a chamber with various background gases such as Nitrogen, Argon or air. In this case, at the same pressure as previously, plasma bullets can propagate regardless of the background gas inside the chamber. When only Helium is present and other gasses are evacuated, bullet propagation inside the chamber ceases to exist. Therefore it is believed that in order for plasma bullets to propagate, there needs to be a boundary surrounding the gas channel. In this paper, experimental evidence supporting the observations explained above will be presented.
File Size	93271
File Format	PDF
ISBN	9781457721274
ISSN	07309244
e-ISBN	9781457721298
e-ISBN	9781457721281
DOI	10.1109/PLASMA.2012.6383403
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-07-08
Publisher Place	United Kingdom
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Helium Electron tubes Gas lasers Educational institutions Atmospheric waves Plasma temperature
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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