No abstract

The reaction rate values for the molecular nitrogen B3Ug state quenching by ethanol for vibrational quantum numbers TI' = 4-12 have been evaluated from the change of N, first positive system spectrum at ethanol addition to a high speed, microwave produced, plasma flow. The wall influence is avoided using a 0.9 m large reaction chamber. Computed Na(B3n,) quenching rate values arc comprised between 0.9 x 1O-Io and 1.4 x cm3 + s-l, being smaller than the corresponding gaskinetics rate.

A lot of papers were published by different authors on positive column with the purpose to explain the constriction phenomena. There are niany proposed mechanisms to explain surprisingly well one and the same phenomenon - the positive column constriction