The molecular alignment technique utilizing the interaction between the intense nonresonant laser field and the induced dipole moment is applied to the homonuclear rare gas dimers Rg(2) (Rg=Ar, Kr, and Xe). The degree of alignment is investigated by Coulomb exploding Rg(2) and by measuring the angular distributions of the fragment ions. At the same peak intensity of the laser field, the degree of alignment becomes larger in order of Ar-2, Kr-2, and Xe-2, reflecting the order of magnitudes of their polarizability anisotropy Deltaalpha. By taking I-2 molecules as a reference, Deltaalpha of Ar-2, Kr-2, and Xe-2 are estimated to be 0.5, 0.7, and 1.3 A3, respectively. (C) 2003 American Institute of Physics.