Isotopic and spin-nuclear effects in solid hydrogens

摘要

The multiple isotopic family of hydrogens (H-2, HD, D-2, HT, DT, T-2) due to large differences in the de Boer quantum parameter and inertia moments displays a diversity of pronounced quantum isotopic solid-state effects. The homonuclear members of this family (H-2, D-2, T-2) due to the permutation symmetry are subjects of the constraints of quantum mechanics which link the possible rotational states of these molecules to their total nuclear spin giving rise to the existence of two spin-nuclear modifications, ortho- and parahydrogens, possessing substantially different properties.