Studies of the Influence of Nitrogen or Argon on OH, O2 Emission under High Temperature and High Pressure by Spectrographic Method

The behavior of OH, O2 in the process of the reaction for hydrogen are successfully studied by using improved prism spectrograph. The results show that nitrogen and argon which are as third bodies can get energy from free-atoms and radicals, thus decrease the OH emission; but certain argon atoms may increases the OH emission. The measurements using improved prism spectrograph found that O2 emission always delays the OH emission which directly proves that O2 may be excited after the stop of reaction for the chain. Both OH emission and induction time are observed under the excitation of incident wave and reflection wave. The technique for improved prism spectrograph can be used to study emission behavior under excitation by shock wave or high temperature-high pressure generated by high speed reaction.