Abstract

We report high-resolution differential cross sections at thermal energy for polarized, rotationally state-selected LiF on Ar. They were 2-8% larger with LiF in the $J=|M|=1$ orientation along the relative velocity than in the $J=1$ unpolarized state. The differential cross section in the present case is much more sensitive to change in polarization than is the total cross section. The high-frequency oscillations of the differential cross sections were found substantially independent of $J$ when the present $J=1$ data were compared with non-state-selected data for $\overline{J}=15$ or $\overline{J}=25$.

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