Atomic alignment effect for the CF_3~* formation in the oriented Ar (~3P_2, MJ = 2) + CF_3H reaction has been investigated at different two CF_3H beam conditions: effusive and supersonic beams. The chemiluminescence intensity of CF_3~* was measured as a function of the magnetic orientation field direction in the collision frame. A significant contribution of rank 4 moment was recognized. The cross-section for each magnetic substate in the collision frame, σ~(M`_J=0):σ~(M`_J=1):σ~(M`_J=2), was determined to be :: = 1.00:0.84 ± 0.02:0.88 ± 0.02 for the effusive CF3H beam condition. The atomic alignment effect was found to significantly depend on the CF3H beam condition. For the supersonic beam condition, σ~(M`_J=01) was changed to be smaller than σ~(M`_J=2).
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