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Title: Dissociation and excitation coefficients of nitrogen molecules and nitrogen monoxide generation

The excitation coefficient α{sub N2} is calculated for the excited metastable level of N{sub 2}(A{sub 3}Σ{sub u}{sup +}) in nitrogen molecules. In addition, the dissociation coefficient of nitrogen molecules is investigated by making use of the Boltzmann distribution of the electrons in atmospheric plasmas. The excitation and electron-impact dissociation coefficients of nitrogen molecules are analytically expressed in terms of the electron temperature T{sub e} for evaluations of the reactive oxygen and nitrogen species in atmospheric plasmas. As an application example of these coefficients, the nitrogen monoxide generation through a microwave torch is carried out for a development of medical tool. The nitrogen monoxide concentration from a microwave plasma-torch can be easily controlled by the nitrogen flow rate, mole fraction of the oxygen gas, and the microwave power. A simple analytic expression of the nitrogen monoxide concentration is obtained in terms of the oxygen molecular density and gas flow rate. The experimental data agree remarkably well with the theoretical results from the analytical expression. A microwave nitrogen-torch can easily provide an appropriate nitrogen monoxide concentration for the wound healings.
Authors:
; ; ;  [1]
  1. Department of Electronic and Biological Physics, Kwangwoon University 447-1 Wolgye-Dong, Nowon-Gu, Seoul 137-701 (Korea, Republic of)
Publication Date:
OSTI Identifier:
22220684
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 20; Journal Issue: 8; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
74 ATOMIC AND MOLECULAR PHYSICS; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; BOLTZMANN EQUATION; CONCENTRATION RATIO; DISSOCIATION; ELECTRON TEMPERATURE; ELECTRONS; EXCITATION; HEALING; ION TEMPERATURE; MICROWAVE RADIATION; MOLECULES; NITRIC OXIDE; NITROGEN; OXYGEN; PLASMA DENSITY; WOUNDS