Fully differential cross sections (FDCS) for proton + helium single capture and transfer-excitation collisions are presented using the Four-Body Transfer-Excitation (4BTE) model. This is a first order perturbative model that allows for any two-particle interaction to be studied. For single capture, the effect of the projectile-nuclear term in the perturbation is examined. It is shown that inclusion of this term results in an unphysical minimum in the FDCS, but is required to correctly predict the magnitude of the experimental results. For transfer-excitation, the role of electron correlation in the target helium atom is studied, and shown to be unimportant in the calculation of the FDCS.
A. L. Harris et al., "Four-Body Charge Transfer Processes in Heavy Particle Collisions," Journal of Physics: Conference Series, vol. 212, no. 1, pp. 1-6, Institute of Physics - IOP Publishing, Jan 2010.
The definitive version is available at https://doi.org/10.1088/1742-6596/212/1/012031
International Symposium on (e,2e), Double Photoionization and Related Topics & 15th International Symposium on Polarization and Correlation in Electronic and Atomic Collisions (2009: Jul. 30-Aug. 1, Lexington, KY)
Keywords and Phrases
Charge transfer process; Excitation collision; First order; Fully differential cross sections; Heavy-particle collisions; Helium atom; Perturbative model; Charge transfer; Ion exchange; Helium
International Standard Serial Number (ISSN)
Article - Conference proceedings
© 2010 Institute of Physics - IOP Publishing, All rights reserved.