THEORY OF LONG-RANGE INTERATOMIC FORCES. I. DISPERSION ENERGIES BETWEEN UNEXCITED ATOMS

Journal Article · Fri Sep 01 04:00:00 EDT 1961 · Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D

DOI:https://doi.org/10.1103/PhysRev.123.1865· OSTI ID:4840409

Fontana, P R

A general theory of second-order dispersion forces between atoms in nondegenerate ground states is first developed by using an irreducible tensor formalism and the theory of angular momentum. This forms the basis for calculations of forces between excited systems. Attention is given to the interaction of two noble gas atoms where it is assumed that each electron oscillates with simple harmonic motion, and the interaction between two alkali atoms is calculated by considering the electrons to be moving in a Coulomb field. The dominant terms of the dispersion energy between a number of atoms and molecules are tabulated. The results indicate that the hitherto neglected dipole- octupole contributions are in many cases larger than the quadrupole-quadrupole terms. (auth)

• Research Organization: Yale Univ., New Haven
• NSA Number: NSA-15-031410
• OSTI ID: 4840409
• Journal Information: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D, Journal Name: Physical Review (U.S.) Superseded in part by Phys. Rev. A, Phys. Rev. B: Solid State, Phys. Rev. C, and Phys. Rev. D Vol. Vol: 123; ISSN PHRVA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

ALKALI METALS
ANGULAR DISTRIBUTION
ATOMS
COUPLING
DIPOLES
DISPERSIONS
ELECTRIC POTENTIAL
ELECTRONS
ENERGY LEVELS
GASES
INTERACTIONS
MATHEMATICS
MOMENTUM
OCTUPOLES
OSCILLATIONS
PHYSICS
QUADRUPOLES
RARE GASES
TABLES
TENSORS
VECTORS