화학공학소재연구정보센터
Journal of Chemical Physics, Vol.111, No.9, 3940-3945, 1999
Photodissociation of hydrogen sulfide at 157.6 nm: Observation of SH bimodal rotational distribution
Photodissociation of the H2S molecule at 157.6 nm was studied experimentally using the Rydberg tagging technique. Translational energy distributions of the H-atom product from the H2S photodissociation were measured, and the SH(X (2)Pi) + H(S-2) channel was found to be the dominant dissociation process. Spin-orbit and rovibrational state distributions were also obtained for the SH product, which was found to be both vibrationally and rotationally excited. An intriguing bimodal rotational distribution in the lowest two vibrational states, v=0 and 1, has been clearly observed for the SH product, indicating that there are two distinctive dissociation mechanisms involved in the photodissociation of H2S at 157 nm excitation.