Crossed-beam study of the reaction H3+(D2,H2)D2H+

Abstract

A new crossed-beam apparatus has been applied to a study of the dynamics of simple proton and deuteron transfer reactions [M. L. Vestal, Ph. D. Dissertation, University of Utah, Salt Lake City, Utah (1975)]. The results of detailed studies of the reactions H+3(D2,H2)D2H+ and D+3(H2D2)H2D+ are presented. Results are also reported on the reactions H+3(Ar,H2)ArH+ and H+3(N2,H2)N2H+. The experimental results are presented as contour maps of relative intensity normalized for Cartesian velocity coordinates plotted superimposed on the Newton diagram as described by Cross and Wolfgang [J. Phys. Chem. 73, 743 (1969)]. The data are also presented in an intensity contour plot using the relative translational energy and center-of-mass scattering angle as rectangular coordinates. This method for plotting data from crossed-beam experiments, which was developed in this work, has the advantage that the relative differential cross sections as functions of relative translational energy of the products and center-of-mass scattering angle are directly displayed. Product angular distributions obtained by integrating the contour diagrams over the relative translational energy distributions are also given.