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Large Volume Non-Equilibrium Air Plasma at Atmospheric Pressure: A Novel Method with Low Power Requirements

2007
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Release : 2007
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Book Synopsis Large Volume Non-Equilibrium Air Plasma at Atmospheric Pressure: A Novel Method with Low Power Requirements by :

Download or read book Large Volume Non-Equilibrium Air Plasma at Atmospheric Pressure: A Novel Method with Low Power Requirements written by . This book was released on 2007. Available in PDF, EPUB and Kindle. Book excerpt: This document is the final technical report on the research activities carried out under AFOSR Grant F49620-03-1-0325. Here we present our research results, which took place in the last three years and a half. Particularly, during the later period of performance the focus of our activities was on carrying out diagnostics on plasma devices based on new approaches that use high voltage narrow pulses to ignite the plasma. These novel approaches allow for the generation of non-thermal high-pressure discharges that can be used as radiation sources and for biomedical applications.

Non-Equilibrium Air Plasmas at Atmospheric Pressure

2004-11-29 Science
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Release : 2004-11-29
Genre : Science
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Book Rating : 120/5 ( reviews)

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Book Synopsis Non-Equilibrium Air Plasmas at Atmospheric Pressure by : K.H. Becker

Download or read book Non-Equilibrium Air Plasmas at Atmospheric Pressure written by K.H. Becker. This book was released on 2004-11-29. Available in PDF, EPUB and Kindle. Book excerpt: Atmospheric-pressure plasmas continue to attract considerable research interest due to their diverse applications, including high power lasers, opening switches, novel plasma processing applications and sputtering, EM absorbers and reflectors, remediation of gaseous pollutants, excimer lamps, and other noncoherent light sources. Atmospheric-pressu

Mechanisms of Ionizational Nonequilibrium in Air Plasmas

2002
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Release : 2002
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Book Synopsis Mechanisms of Ionizational Nonequilibrium in Air Plasmas by :

Download or read book Mechanisms of Ionizational Nonequilibrium in Air Plasmas written by . This book was released on 2002. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this MURI program was to discover physical mechanisms for significantly reducing the power budget required to create and sustain large volume atmospheric air plasmas at temperature below 2000K with electron number densities of the order of 10 13 cm -3. The Stanford consortium Experimentally demonstrated the generation of over 10 12 electrons/cm 3 in atmospheric pressure air at 2000K, with an average power of 12 W/cm 3, i.e. 250 times smaller than a DC discharge at 10 12/cm3.

Creation and Measurement of Air Plasmas

2000
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Release : 2000
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Book Synopsis Creation and Measurement of Air Plasmas by :

Download or read book Creation and Measurement of Air Plasmas written by . This book was released on 2000. Available in PDF, EPUB and Kindle. Book excerpt: The parent program focuses on minimization of power budget for the efficient creation of large volume, atmospheric pressure air plasmas, with minimum electron density of 10(exp 13)/cu cm and heavy species translational temperature not exceeding 2000 K. Since a thermal plasma with 10(exp 13)/cu cm electron density necessitates a heavy species temperature of approximately 4200 K. the stated program goals inherently define a nonequilibrium plasma. OSU's approach for attaining the program goals is two-pronged based on: (1) Creation of a low translational temperature, highly vibrationally excited environment in which the rates of principal electron loss channels are reduced by orders of magnitude. (2) Efficient electron production by means of an electron beam and/or application of a short pulse. high E/n electric field.

Nonequilibrium Air Plasma Chemistry

2002
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Release : 2002
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Book Synopsis Nonequilibrium Air Plasma Chemistry by :

Download or read book Nonequilibrium Air Plasma Chemistry written by . This book was released on 2002. Available in PDF, EPUB and Kindle. Book excerpt: This AASERT program has enabled the training and support of four graduate students (Richard Gessman, PhD. 1999, Edward Wahl, Ph. D. 2000, Kate Snyder, Ph. D. 2002, expected, and Jonathan Flad, Ph. D. 2002, expected) in the framework of the Air Plasma Ramparts MURI program entitled I Mechanism of ionizational Nonequilibrium in Air Plasmas. The goal of the Air Plasma Ramparts program is to investigate energy efficient methods for creating and sustaining large volume atmospheric air plasmas with electron number densities greater than 10(exp 13)/cu cm that can be employed to shield aircrafts or other sensitive components from electromagnetic radiation. Our approach at Stanford University has been to enhance ionizational nonequilibrium by means of applied electrical discharges. Our investigations have focused on two types of discharge, namely direct-current (dc) and repetitively pulsed discharges. The AASERT students involved with this program have provided support in the study of the dc discharges in air and nitrogen plasmas. The outcome of this work is presented.

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