Afterglow Studies in Nitrogen PDF Download
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Author: Gerald Norman Hays
Publisher:
ISBN:
Category :
Languages : en
Pages : 200
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Author: Gerald Norman Hays
Publisher:
ISBN:
Category :
Languages : en
Pages : 200
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Author: Otto Oldenberg
Publisher:
ISBN:
Category : Afterglow (Physics)
Languages : en
Pages : 28
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The 'auroral afterglow' or short-duration afterglow of nitrogen is studied with particular attention to relative intensities in the emission spectrum. It is assumed that in an intense discharge through pure nitrogen, excitation in steps via metastable states occurs. (Author).
Author: Robert Douglas Ashford
Publisher:
ISBN:
Category : Oxygen
Languages : en
Pages : 240
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Author: Roger Edward Lund
Publisher:
ISBN:
Category : Nitrogen
Languages : en
Pages : 362
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The temporal behavior of the N(+), N2(+), N3(+) and N4(+) ions in decaying nitrogen plasmas as well as that of the afterglow light intensity was studied in the pressure range of about 0.1 Torr to 1.7 Torr. The plasma container was a glass cylinder covered by a molybdenum film. An electric quadrupole mass spectrometer was used for the ion density studies while a light spectrometer allowed a determination of the spectral distribution of the afterglow light. The analysis of the light intensity decay curves resulted in a method of measuring the surface catalytic efficiency for the recombination of nitrogen atoms at the plasma boundary. An analysis of the N2(+) density decay curves at low pressures revealed that these ions are produced in the afterglow by collisions between metastable molecules N2(x) and N2(y). These metastable molecules are (1) very ineffectively destroyed at the plasma boundary, (b) produced in the afterglow period by the atomic recombination process and (c) responsible for part of the afterglow light emission. The value of the electron temperature, determined through consideration of the losses of the N(+) ions, varied from 1600K to 4500K in the pressure range studied. Evidence was obtained for afterglow electron heating by ionizing collisions between metastable molecules and by superelastic collisions between electrons and vibrationally excited ground state molecules. (Author).
Author: O. Oldenberg
Publisher:
ISBN:
Category : Afterglow (Physics)
Languages : en
Pages : 34
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An attempt is made to explain the 'auroral afterglow' or short-duration afterglow of nitrogen, discovered in 1932 by Kaplan, in terms of well established processes. In this afterglow, N2+ bands are excited together with bands of neutral N2 molecules, which show energies far exceeding the limit evident in the well known long-duration afterglow (Lewis-Rayleigh afterglow). This limit is given by the energy of recombining N atoms, 9.76 eV. (Author).
Author: Alfred Clark
Publisher:
ISBN:
Category : Nitrogen
Languages : en
Pages : 6
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Author: O. Oldenberg
Publisher:
ISBN:
Category : Afterglow (Physics)
Languages : en
Pages : 0
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The 'auroral afterglow' or short-duration afterglow of nitrogen is studied with particular attention to relative intensities in the emission spectrum. It is assumed that in an intense discharge through pure nitrogen, excitation in steps via metastable states occurs. (Author)
Author: Robert Allen Young
Publisher:
ISBN:
Category : Nitrogen
Languages : en
Pages : 214
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Author: Allan René de Monchy
Publisher:
ISBN:
Category : Ionization
Languages : en
Pages : 155
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Author: Allan René de Monchy
Publisher:
ISBN:
Category :
Languages : nl
Pages : 155
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