Dipole, quadrupole, octupole, and dipole-dipole-quadrupole polarizabilities and second hyperpolarizabilities at real and imaginary frequencies for helium in the 2[sup 3]S state: Dispersion-energy coefficients for interactions between He(2[sup 3]S) and H(1[sup 2]S), He(1[sup 1]S), He(2[sup 3]S), or H[sub 2](X[sup 1][Sigma][sub g][sup +])

Journal Article · Thu Jul 15 04:00:00 EDT 1993 · International Journal of Quantum Chemistry; (United States)

DOI:https://doi.org/10.1002/qua.560470204· OSTI ID:5927974

Bishop, D M; Pipin, J ^[1]

---

1. Univ. of Ottawa, Ontario (Canada)

The authors have determined the dynamic dipole ([alpha][sub 1]), quadrupole ([alpha][sub 3]), and dipole-dipole-quadrupole (B) polarizabilities and the second hyperpolarizability tensor ([gamma]) for the helium atom in its lowest triplet state (2[sup 3]S). They have done so for both real and imaginary frequencies: in the former case, for a range of frequencies ([omega]) between zero and the first electronic-transition frequency, and in the latter case for a 32-point Gauss-Legendre grid running from zero to [Dirac h][omega] = 20 E[sub h]. They have also determined the dispersion-energy coefficients C[sub 6], C[sub 8], and C[sub 10] for the systems H(1[sup 2]S)-He(2[sup 3]X), He(1[sup 1]S)-He(2[sup 3]S), and He(2[sup 3]S)-He(2[sup 3]S) and the C[sub 6][sup 0], C[sub 6][sup 2], C[sub 8][sup 0], C[sub 8][sup 4] coefficients for the interaction He(2[sup 3]S)-H[sub 2](X[sup 1][Sigma][sub g][sup +]). Their values of the higher-order multipolar polarizabilities and of [gamma] for the 2[sup 3]S state of helium are, they believe, the first to be published. 14 refs., 5 tabs.

• OSTI ID: 5927974
• Journal Information: International Journal of Quantum Chemistry; (United States), Journal Name: International Journal of Quantum Chemistry; (United States) Vol. 47:2; ISSN IJQCB2; ISSN 0020-7608
• Country of Publication: United States
• Language: English

Related Subjects

664100* -- Theory of Electronic Structure of Atoms & Molecules-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
DIPOLES
ELECTRICAL PROPERTIES
ELEMENTS
ENERGY
FLUIDS
GASES
HELIUM
HYDROGEN
INTERACTIONS
MATHEMATICAL MODELS
MULTIPOLES
NONMETALS
OCTUPOLES
PHYSICAL PROPERTIES
POLARIZABILITY
QUADRUPOLES
RARE GASES