Direct observation of collision induced transitions from N2(B 3Πg) to N2(B′ 3Σ−u)

Direct observation of collision induced transitions from N2(B 3Πg,v = 8,9) to N2(B′ 3Σ−u,v = 4,5), respectively, is reported. Following laser pumping of N2(A 3Σ+u,v = 5,6) to N2(B,v = 8,9), the wavelength and time-resolved fluorescence of both N2 (B) and N2 (B′) is monitored and the mechanism of the induced transitions is discussed.