title: Steric effect in the energy transfer reaction of oriented Kr (3P2, MJ = 2) + CO.
abstract: Atomic alignment effect for the formations of CO (a' (3)Sigma(+)) and CO (d (3)Delta) in the energy transfer reaction of oriented Kr ((3)P(2), M(J) = 2) + CO has been measured at a collision energy of 0.07 eV. The emission intensities of CO (a' (3)Sigma(+)) and CO (d (3)Delta) were similarly highly enhanced when the electron angular momentum of Kr ((3)P(2)) is aligned perpendicular to the relative velocity vector. We observed the analogous atomic alignment effect between the CO (a' (3)Sigma(+)) and CO (d (3)Delta) formations. That is, the |M(J)'| = 2 magnetic substate in the collision frame is significantly less reactive than the other M(J)' states. In addition, the large difference of the cross section (sigma(Sigma)/sigma(Pi) approximately 2.0) between the Sigma- and Pi-configuration of the unpaired 4p orbital of Kr ((3)P(2)) is recognized.
authors: Department of Chemistry, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, Japan.
authors: H
authors: H
authors: Ohoyama
authors: K
authors: K
authors: Yasuda
authors: T
authors: T
authors: Kasai