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Absolute differential cross sections for small-angle He/sup +/-He elastic and charge-transfer scattering at keV energies

Journal Article · · Phys. Rev. A; (United States)
; ; ; ; ;
This paper reports measurements of absolute differential cross sections for elastic and for charge-transfer scattering in He/sup +/-He collisions. Elastic-scattering cross sections have been determined at 1.5 keV over the laboratory angular range 0.04/sup 0/--1.0/sup 0/ while charge-transfer cross sections have been determined at 1.5, 2.5, and 5.0 keV over the range 0.02/sup 0/--1.0/sup 0/, and at 0.25 and 0.50 keV over the range 0.02/sup 0/--7.8/sup 0/. The experimental data exhibit strong oscillations over the range of angles and energies studied and are in agreement with partial-wave theory calculations using phase shifts derived from proposed forms of the gerade and ungerade He/sub 2//sup +/ interaction potentials. The experimental cross sections have also been integrated over angle to provide absolute integral cross sections.
Research Organization:
Department of Physics, Department of Space Physics and Astronomy, and Rice Quantum Institute, Rice University, P.O. Box 1892, Houston, Texas 77251
OSTI ID:
7065492
Journal Information:
Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 38:6; ISSN PLRAA
Country of Publication:
United States
Language:
English

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Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CHARGE EXCHANGE
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
DATA
DIFFERENTIAL CROSS SECTIONS
ELASTIC SCATTERING
ELEMENTS
ENERGY DEPENDENCE
ENERGY RANGE
EXPERIMENTAL DATA
FLUIDS
GASES
HELIUM
HELIUM IONS
INFORMATION
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
KEV RANGE
KEV RANGE 01-10
NONMETALS
NUMERICAL DATA
OSCILLATIONS
RARE GASES
SCATTERING
SMALL ANGLE SCATTERING