tokens: In such conditions , the following kinetic reactions have been studied : N2 ( A ) + N2 ( A ) - - > N2 ( C , B , V ' ) + N2 ( X ) , N2 ( A ) + N2 ( X , V > 5 ) - - > N2 ( X ) + N2 ( B , V ' ) in pure N2 post - discharges and N2 ( A ) + CH4 - - > products , C + N + M2 - - > CN ( B , V ' ) + M2 , N2 ( X , V > 4 ) + CN - - > N2 ( X ) + CN ( B , A , V ' ) , in N2 - 1 % CH4 post - discharges .