Abstract
Iodine molecules in a flow cell containing helium as a carrier gas appear to be partially aligned. This has been determined by comparison of circular polarisation ratios of rotationally resolved emission lines in the flow cell with those obtained from a similar cell containing 1 2 in an isotropic environment. After all other possibilities have been eliminated, two experimental indicators of alignment remain. One is the reduction of the absolute value of the circular polarisation ratio and the other is the differential reduction of one of the P,R-doublet emission lines.
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