Contribution of Vacuum-Ultraviolet Transitions of Molecular Nitrogen to Radiation During Atmospheric Reentry

2010 ◽  
Author(s):  
Heiko Liebhart ◽  
Markus Fertig ◽  
Georg Herdrich ◽  
Hans-Peter Röser
Keyword(s):  
Vacuum Ultraviolet ◽  
Molecular Nitrogen ◽  
Atmospheric Reentry

Vacuum ultraviolet emission from highly excited states of molecular nitrogen

1989 ◽  
Vol 134 (2) ◽  
pp. 390-394 ◽  
Author(s):  
Jean-Yves Roncin ◽  
Françoise Launay ◽  
Kouichi Yoshino
Keyword(s):  
Excited States ◽  
Vacuum Ultraviolet ◽  
Molecular Nitrogen ◽  
Ultraviolet Emission

VUV photochemistry simulation of planetary upper atmosphere using synchrotron radiation

2013 ◽  
Vol 20 (4) ◽  
pp. 587-590 ◽  
Author(s):  
Nathalie Carrasco ◽  
Alexandre Giuliani ◽  
Jean-Jacques Correia ◽  
Guy Cernogora
Keyword(s):  
Synchrotron Radiation ◽  
Preliminary Report ◽  
Vacuum Ultraviolet ◽  
Molecular Nitrogen ◽  
Gas Mixtures ◽  
Upper Atmosphere ◽  
Atmospheric Photochemistry ◽  
Dense Media ◽  
Set Up ◽  
Gas Pressures

The coupling of a gas reactor, named APSIS, with a vacuum-ultraviolet (VUV) beamline at the SOLEIL synchrotron radiation facility, for a photochemistry study of gas mixtures, is reported. The reactor may be irradiated windowless with gas pressures up to hundreds of millibar, and thus allows the effect of energetic photons below 100 nm wavelength to be studied on possibly dense media. This set-up is perfectly suited to atmospheric photochemistry investigations, as illustrated by a preliminary report of a simulation of the upper atmospheric photochemistry of Titan, the largest satellite of Saturn. Titan's atmosphere is mainly composed of molecular nitrogen and methane. Solar VUV irradiation with wavelengths no longer than 100 nm on the top of the atmosphere enables the dissociation and ionization of nitrogen, involving a nitrogen chemistry specific to nitrogen-rich upper atmospheres.

Oscillator Strength Measurements in the Vacuum-Ultraviolet by the Emission Method

1988 ◽  
Vol 102 ◽  
pp. 353-356
Author(s):  
C. Goldbach ◽  
G. Nollez
Keyword(s):  
Oscillator Strength ◽  
Vacuum Ultraviolet ◽  
Oscillator Strengths ◽  
Emission Method ◽  
Absolute Scale ◽  
Good Agreement

AbstractThe principles and the realization of an experiment devoted to oscillator strength measurements in the vacuum-ultraviolet by the emission method are briefly presented. The results obtained for the strong multiplets of neutral nitrogen and carbon in the 1200-2000 Å range yield an absolute scale of oscillator strengths in good agreement with the most recent calculations.

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