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  • 1
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    EUV branching ratios for ionized nitrogen and oxygen emissions (1983)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: Branching ratios of single ionized atomic nitrogen and oxygen EUV emissions that terminate on the metastable states of the respective ions are presented. The four NII ratios and the 482/515 A ratio in OII reported represent the first measured values. Details of the wavelength calibration procedures adopted and a brief discussion of two modeling implications of the measured ratios are included.
    Keywords: ATOMIC AND MOLECULAR PHYSICS
    Type: Journal of Quantitative Spectroscopy and Radiative Transfer; 29; Feb. 198
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    On the role of vibrational excitation in dissociative recombination (1981)
    In:  Other Sources
    Details
    Publication Date: 2019-06-28
    Description: An improved physical model of dissociative recombination is presented and applied to experimental data on the temperature dependence of rate coefficients for the rare-gas and atmospheric-gas ions. It is shown that in the charge neutralisation of the rare-gas dimer ions, autoionisation plays an important role (at least in comparison with the atmospheric-gas ions) and contributes to the fast fall-off in the rate coefficient with vibrational excitation observed in shock tube studies. Numerical estimates of the observed fall-off in rate coefficient with increasing vibrational excitation are also presented.
    Keywords: ATOMIC AND MOLECULAR PHYSICS
    Type: Journal of Physics B - Atomic and Molecular Physics; 14; Feb. 28
    Format: text
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    NASA TECHNICAL REPORTS
  • 3
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    Measurements of oscillator strengths for EUV emissions of ionized oxygen, nitrogen and sulfur (1989)
    In:  Other Sources
    Details
    Publication Date: 2019-07-12
    Description: Oscillator-strength determinations for EUV branching emissions of atomic oxygen, nitrogen and sulfur are reported. The transitions studied were excited using a beam-foil source and both branching ratios and radiative lifetimes were determined. Calculated transition-probability data for multiply-ionized neon and oxygen emissions were used to obtain an in situ relative sensitivity curve for the EUV detection system used. New oscillator strengths for NII, OII, SII, and SIII EUV branching emissions that terminate on metastable states of the respective ions are reported, together with new lifetime data for ionized sulfur emissions.
    Keywords: ATOMIC AND MOLECULAR PHYSICS
    Type: Journal of Quantitative Spectroscopy and Radiative Transfer (ISSN 0022-4073); 42; 295-302
    Format: text
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    NASA TECHNICAL REPORTS
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