Eikonal Methods for Multielectron Ion-Atom Collisions
The Glauber and Born approximations were used to calculate cross sections for bare ions exciting hydrogen to its n = 2 level for an energy of 1.4 MeV/amu which corresponds to a speed of ν=7.5 a.u. results for the total cross sections for the incident bare ions H+, Be4+, C6+, O8+, Ne10+, Mg12+, and P15+ are presented. The Glauber approximation results make a significant correction to the Born approximation as the charge on the incident ion is increased. For P15+ the Glauber result is over a factor of 2 larger than the Born result. Two eikonal approximations (G1 and G2) based on the Glauber approximation were carried out for an incident phosphorus ion in different ionization states for the same energy, 1.4 MeV/amu. It is argued that the G1 approximation, which has a structure similar to the Born approximation, is expected to be in better agreement with experimental data. However, there is no data with which to compare at this time.
J. Peacher, "Eikonal Methods for Multielectron Ion-Atom Collisions," Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 262, no. 1, pp. 42-44, Elsevier, Dec 1987.
The definitive version is available at https://doi.org/10.1016/0168-9002(87)90186-0
Keywords and Phrases
Hydrogen - Radiation Effects; Physics - Atomic; Angular Differential Cross Sections; Atomic Collisions; Eikonal Methods; Glauber Approximation; Ions
International Standard Serial Number (ISSN)
Article - Journal
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