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

Related Subjects

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