J-SELECTIVE STARK ORIENTATION OF MOLECULAR ROTATION IN A BEAM

We propose a facile method to transform alignment of molecular rotation in a beam into transverse orientation with high efficiency via the second-order Stark effect in a homogeneous electric field E. The calculated J-orientation magnitude for a specific rotational level J exhibits a regular structure of equidistant dispersion-form signals in E2 coordinates. Estimates performed for the NaK molecule show the possibility to produce rotational and isotopic selective J orientation for a fixed beam velocity v. The orientation appears in the direction perpendicular to the (v,E) plane, and the optimal angle between v and E is 45-degrees.