No abstract

A spectroscopical investigation of a flowing DC nitrogen discharge is realized for determining the vibrational distributions of radiative excited states and . The distributions are found to be Boltzmannian and the characteristic vibrational temperatures increase with the discharge current but are not affected by the flow rate and pressure variations in the range 1 - 3 Torr. The vibrational distribution of the ground state is deduced from the distribution, following the Franck - Condon principle.

No abstract

Intensity measurements on the second positive and first negative systems were made in a flowing dc nitrogen discharge in order to study the dependence on gas pressure. Different populating mechanisms for the states and together with different excitation energy values for these states account for the experimental results.

No abstract