Ebook: Solid Hydrogen: Theory of the Properties of Solid H2, HD, and D2
Author: Jan Van Kranendonk (auth.)
- Tags: Solid State Physics, Spectroscopy and Microscopy
- Year: 1983
- Publisher: Springer US
- Edition: 1
- Language: English
- pdf
The solid molecular hydrogens are the simplest and most fundamental molecular solids. Except at ultrahigh pressures on the order of a few mega bars, where a transition to a metallic, atomic phase is expected, these solids are true molecular crystals in which the molecules retain their identity with properties not too different from those of the free molecules. At energies below the electronic excitation energy, the thermal and spectroscopic pro perties of these solids are determined by the translational, rotational, and intramolecular vibrational motions of the interacting molecules. The theo retical analysis of the solid-state properties in terms of the free molecules and the intermolecular interactions forms the main topic of this book. The available detailed knowledge of the properties of the free molecules makes it feasible to carry out this program to a large extent on the basis of first principles, and this is one of the attractive features of these systems. The solid hydrogens are dominated by quantum effects, the most out standing property being that the rotation of the molecules is free down to the lowest temperatures, in the sense that the rotational quantum number J characterizing the rotational motion of the free molecules remains a good quantum number in all of the solid-state phases except at ultrahigh pressures.
Content:
Front Matter....Pages i-xv
Properties of Isolated Hydrogen Molecules....Pages 1-28
The Intermolecular Interaction....Pages 29-51
Pure Vibrational Excitations....Pages 53-85
Rotational Excitations in J = 0 Solids....Pages 87-129
Lattice Vibrations and Elastic Properties....Pages 131-172
Single J = 1 Impurities in J = 0 Solids....Pages 173-195
Clusters of J = 1 Impurities in J = 0 Solids....Pages 197-223
The Ordered Phases....Pages 225-254
Rotation Diffusion and Ortho-Para Conversion....Pages 255-275
Back Matter....Pages 277-306
Content:
Front Matter....Pages i-xv
Properties of Isolated Hydrogen Molecules....Pages 1-28
The Intermolecular Interaction....Pages 29-51
Pure Vibrational Excitations....Pages 53-85
Rotational Excitations in J = 0 Solids....Pages 87-129
Lattice Vibrations and Elastic Properties....Pages 131-172
Single J = 1 Impurities in J = 0 Solids....Pages 173-195
Clusters of J = 1 Impurities in J = 0 Solids....Pages 197-223
The Ordered Phases....Pages 225-254
Rotation Diffusion and Ortho-Para Conversion....Pages 255-275
Back Matter....Pages 277-306
....