Anisotropic intermolecular potentials for HeC sub 6 H sub 6 and HeC sub 5 H sub 5 N from total differential cross section measurements

Journal Article · Mon Jul 01 00:00:00 EDT 1991 · Journal of Chemical Physics; (USA)

DOI:https://doi.org/10.1063/1.461469· OSTI ID:5572121

Brandt, R; Henkel, M; Pfeil, B; Seidel, W ^[1]

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1. Physikalisch-Chemisches Institut, Justus-Liebig-Universitaet, Heinrich-Buff-Ring 58, D-6300 Giessen, Federal Republic of Germany (DE)

Differential cross section (DCS) measurements are reported for scattering of a He atomic beam by crossed beams of C{sub 6}H{sub 6} and C{sub 5}H{sub 5}N. Damping of the DCS diffraction oscillations is used to extract reliable anisotropic intermolecular potentials, applying the infinite order sudden approximation (IOSA). The isotropic average for the HeC{sub 6}H{sub 6} potential has a well depth of 3.06 meV and an interatomic separation of 614 pm, while the HeC{sub 5}H{sub 5}N potential has a well depth of 3.19 meV and an interatomic separation of 620 pm.

• OSTI ID: 5572121
• Journal Information: Journal of Chemical Physics; (USA), Vol. 95:1; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
BENZENE
ATOM-MOLECULE COLLISIONS
INTERMOLECULAR FORCES
HELIUM
PYRIDINES
ANISOTROPY
ATOMIC BEAMS
DIFFERENTIAL CROSS SECTIONS
MOLECULAR BEAMS
POTENTIALS
SUDDEN APPROXIMATION
AROMATICS
ATOM COLLISIONS
AZINES
BEAMS
COLLISIONS
CROSS SECTIONS
ELEMENTS
FLUIDS
GASES
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
MOLECULE COLLISIONS
NONMETALS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
RARE GASES
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena