Absolute differential cross sections for very-small-angle elastic scattering in He+He collisions at keV energies
- 1 June 1987
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 35 (11) , 4541-4547
- https://doi.org/10.1103/physreva.35.4541
Abstract
Absolute differential cross sections for He+He elastic scattering at laboratory angles in the range 0.018°–0.5° have been measured for projectile energies of 0.5, 1.5, and 5.0 keV. The experiment employs a position-sensitive detector for determining the angular distribution of scattered particles. The differential cross sections exhibit a transition from classical to quantum behavior within the range of angles studied, and excellent agreement is observed with partial-wave-theory calculations using phase shifts derived from the He-He interaction potentials of Ceperley and Partridge [J. Chem. Phys. 84, 820 (1986)] and Foreman, Rol, and Coffin [J. Chem. Phys. 61, 1658 (1974)].Keywords
This publication has 20 references indexed in Scilit:
- Differential scattering cross sections for collisions of 0.5−, 1.5−, and 5.0‐keV helium atoms with He, H2, N2, and O2Journal of Geophysical Research, 1985
- Absolute and angular efficiencies of a microchannel-plate position-sensitive detectorReview of Scientific Instruments, 1984
- Unique determination of the He2 ground state potential from experiment by use of a reliable potential modelThe Journal of Chemical Physics, 1982
- Total cross sections for electron scattering from N2and HeJournal of Physics B: Atomic and Molecular Physics, 1980
- Potential scattering cross sections in the semiclassical limitJournal of Physics B: Atomic, Molecular and Optical Physics, 1973
- The elastic small angle scattering of ions at atoms in the high energy region. I. Theoretical resultsJournal of Physics B: Atomic and Molecular Physics, 1973
- Uniform approximations for glory scattering and diffraction peaksJournal of Physics B: Atomic and Molecular Physics, 1969
- Higher-Order Stationary-Phase Approximations in Semiclassical ScatteringThe Journal of Chemical Physics, 1965
- Some Aspects of the Quantal and Semiclassical Calculation of Phase Shifts and Cross Sections for Molecular Scattering and TransportThe Journal of Chemical Physics, 1964
- Quantum Effects in Small-Angle Molecular-Beam ScatteringThe Journal of Chemical Physics, 1964