The gashyphen;phase reaction Ba+KClrarr;BaCl+K has been investigated under crossed beam conditions using laser fluorescence detection of the BaCl and K products. The angular distributions of individual BaCl vibrational states have been obtained. For lowv, forward and backward peaks are observed; for highv, insufficient product translational energy is present to resolve separate peaks; and for allv, approximately 58percnt; of the BaCl product is forward scattered. The reaction is interpreted as proceeding through an osculating complex. Although this complex is estimated to live onehyphen;half of a revolution, the energy partitioning is decidedly nonrandom. The peak of the vibrational product population occurs nearv=7, and considerable rotational excitation is present.
展开▼
