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Dimers of carbon disulfide (CS$_2$) molecules embedded in helium nanodropletsare aligned using a moderately intense, 160ps, non-resonant, circularlypolarized laser pulse. It is shown that the intermolecular carbon-carbon (C-C)axis aligns along the axis perpendicular to the polarization plane of thealignment laser pulse. The degree of alignment, quantified by $\langle\cos^2(\theta_\text{2D}) \rangle$, is determined from the emission directionsof recoiling CS$_2$$^+$ fragment ions, created when an intense 40fs probe laserpulse doubly ionizes the dimers. Here, $\theta_\text{2D}$ is the projection ofthe angle between the C-C axis on the 2D ion detector and the normal to thepolarization plane. $\langle \cos^2(\theta_\text{2D}) \rangle$ is measured as afunction of the alignment laser intensity and the results agree well with$\langle \cos^2(\theta_\text{2D}) \rangle$ calculated for gas-phase CS$_2$dimers with a rotational temperature of 0.4K.

Alignment of the CS$_2$ Dimer Embedded in Helium Droplets Induced by a Circularly Polarized Laser Pulse