Nonequilibrium electron-level population of the nitrogen molecule in flows behind shock waves
Abstract
Formation of excited electron levels in a nitrogen molecule radiating a positive band system in flows behind shock waves is investigated in the shock wave velocity range 4-8 km/s. It is found that at velocities 5 km/s or less, electron population is largely realized by processes involving heavy particles. At shock-wave velocities higher than 7.5 km/s, reactions of direct excitation due to electron shock are predominant. At velocities between 5 and 7.5 km/s, both processes should be taken into account.
- Publication:
-
TsAGI Uchenye Zapiski
- Pub Date:
- 1981
- Bibcode:
- 1981ZaTsA..12..131K
- Keywords:
-
- Electron States;
- Gas Flow;
- Molecular Energy Levels;
- Nitrogen;
- Shock Wave Luminescence;
- Molecular Gases;
- Nonequilibrium Conditions;
- Propagation Velocity;
- Thermodynamics and Statistical Physics