Three- and Four-Body Dynamics in Fast Heavy Ion-Atom Ionization

Abstract

Single ionization of helium by impact of 3.6 MeV u−1 Au53+ ions is investigated by means of quantum-mechanical and classical methods. Calculations of fully differential cross sections are compared with recently published data for ionization of low-energy electrons as a function of the momentum transferred by the projectile to the target system. A description of initial and final states of the He atom in terms of a Hartree-Fock potential provides an improvement over previous hydrogen-like models. The present results show that inclusion of the resolution and uncertainties present in the experiment has a major influence on both the shape and magnitude of the cross sections. The effect of four bodies and electron-electron correlation is also investigated. However, after including the experimental conditions into the calculations, the three- and four-body results present similar behaviour.

Department(s)

Physics

Sponsor(s)

United States. Department of Energy

Keywords and Phrases

Atomic and Molecular Collisions; Atomic and Molicular Physics; Electronic Excitation; Electronic Ionization; Excited States; Few-Body Systems; Many-Body Systems; Self-Consistent-Field Methods

International Standard Serial Number (ISSN)

0953-4075

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2004 Institute of Physics - IOP Publishing, All rights reserved.

Publication Date

01 Oct 2004

Link to Full Text

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