LASER-INDUCED FLUORESCENCE DETECTION OF O(3P(J=2,1,0))

O atoms in the P-3(2), P-3(1), and P-3(0) states were detected by vacu um-ultraviolet laser-induced fluorescence (VUV LIF) technique. The O(P -3(2)), O(P-3(1)), and O(P-3(0)) atoms were produced by the collisiona l reaction between the O atoms in the D-1 excited state and collision partner N-2. O atoms in the D-1 excited state were obtained hy photodi ssociation of N2O at 1930-nm laser light. As O(P-3(2)). O(P-3(1)), and O(P-3(0)) species have their first transition in the VUV region, the probe laser was used to excite O(2p(3)P(J=2.1.0)) atoms to the O(3s(3) S(0)) state at 130.212 nm for j = 2, 130.481 nm for j = 1, and 130.597 nm for j = 0. A four-wave difference frequency mixing (2 omega(1) - o mega(2)) process using Kr as nonlinear media was employed to generate 130-nm probe laser light.