Variation in (Hyper)Polarizability of H Molecule in Bond Dissociation Processes Under Spatial Confinement.

We report the results of calculations of the linear polarizability and second hyperpolarizability of the H molecule in the bond dissociation process. These calculations were performed for isolated molecules, as well as molecules under spatial confinement. The spatial confinement was modeled using the external two-dimensional (cylindrical) harmonic oscillator potential. In contrast to the recently investigated polar LiH molecule, it was shown that the spatial confinement significantly diminishes the linear and nonlinear response of H for each interatomic (H-H) distance.