Large Angle Scattering of Lithium Ions by Helium Atoms.
NAVAL POSTGRADUATE SCHOOL MONTEREY CA
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An experiment using the focusing properties of a nonuniform axially symmetric magnetic field to study large angle scattering of ions from atoms and molecules is described. The computer program which solves the trajectory equation is given along with a detailed description of the apparatus. Measurements of the absolute differential scattering cross sections for Li on He from 36 deg. to 41.7 deg. at 200 eV and 300 eV and for He on He from 40 deg. to 54 deg. at 300 eV and 400 eV demonstrate the feasibility of the technique. Using the measured cross sections for Li on He and the computational method of Firsov, a calculation was made of the interatomic potential function for nuclear separations of 0.15A to 1.1A. Author
- Atomic and Molecular Physics and Spectroscopy
- Nuclear Physics and Elementary Particle Physics