van der Waals interaction of finite metallic systems: A study of cluster-atom scattering

Journal Article · Fri Apr 01 00:00:00 EST 1994 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.49.2696· OSTI ID:5119903

Kresin, V V; Scheidemann, A; Knight, W D ^[1]

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1. Department of Physics, University of California, Berkeley, California 94720 (United States) Lawrence Livermore National Laboratory, University of California, Livermore, California 94550 (United States) Department of Chemistry, University of Washington, Seattle, Washington 98195 (United States)

Absolute integral cross sections for elastic collisions of neutral sodium clusters Na[sub [ital n]] ([ital n]=2--20) with sodium atoms have been measured and the van der Waals interaction constants determined. The center-of-mass cross sections are very large (up to thousands of square angstroms), reflecting high cluster polarizabilities. It is found that the dispersion theory based on measured response parameters of alkali-metal clusters tends to overestimate the interaction strength.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 5119903
• Journal Information: Physical Review A; (United States), Vol. 49:4; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
SODIUM
ATOM-MOLECULE COLLISIONS
VAN DER WAALS FORCES
ATOMS
CENTER-OF-MASS SYSTEM
ELASTIC SCATTERING
INTEGRAL CROSS SECTIONS
ALKALI METALS
ATOM COLLISIONS
COLLISIONS
CROSS SECTIONS
ELEMENTS
METALS
MOLECULE COLLISIONS
SCATTERING
664300* - Atomic & Molecular Physics- Collision Phenomena- (1992-)
664500 - Special Atoms & Molecules- (1992-)