Electronic structures and reaction dynamics of open-shell species

  • 34


    Mendeley users who have this article in their library.
  • 1


    Citations of this article.


Predissociation of electronically excited OH A(2)Sigma(+) (v' = 3) is studied using velocity-map imaging of the atomic oxygen photofragments. Fine structure yields, angular distributions and alignment parameters are obtained for the O((3)P(J)), J = 2,1,0 products. Angular distributions for the O(3)P(0) (J = 0) fragment, which has no angular momentum polarization, agree well with predictions from the angular distribution simulation computer routine by Kim et al. J. Chem. Phys., 2006, 125, 133316 which calculates the anisotropy of photofragment recoil as a function of dissociation lifetime, excitation frequency, rotational level, and rotational constant. When angular momentum polarization (i.e. non-equilibrium population distributions of the magnetic sublevels) of the atomic fragments is present, the polarization sensitivity of the O((3)P(J)) (2 + 1) resonance enhanced multiphoton ionization (REMPI) detection scheme used to detect the O((3)P(2,1)) products affects the measured angular distribution. Strong polarization effects are observed for the O((3)P(2,1)) products and accounted for in a simple sudden limit model for the photodissociation. In agreement with the sudden limit predictions for pre-dissociation of OH A(2)Sigma(+) (v' = 3) through the (4)Sigma(-) state, strongly aligned O((3)P(2)) is found to be the major product.

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Get full text

There are no authors.

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free