ROTATIONAL ALIGNMENT OF PRODUCT MOLECULES FROM THE REACTIONS SR-C3H7BR, I-C3H7BR BY MEANS OF PLIF(CH3BR, C2H5BR, N)

Rotational alignment of the product SrBr in the beam-gas reactions Sr + RBr (R=CH3, C2H5, n-C3H7, and i-C3H7 was studied in experiment and t heory. The rotational alignment was probed by means of the polarized l aser-induced fluorescence (PLIF) of the product. The distributions of the rotational vector become less anisotropic with the increment of th e numbers of the carbon atoms in RBr. Moreover, a simple dynamical mod el was used to calculate the product rotational alignment. The theoret ical results are in good agreement with the experimental ones.