Binary-encounter electron production in collisions of heavy ions with H{sub 2} and noble gases

Journal Article · Sat May 01 04:00:00 EDT 1993 · Bulletin of the American Physical Society

OSTI ID:281581

Shinpaugh, J L; Wolf, H E; Wolff, W ^[1]

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1. Univ. of Frankfurt (Germany); and others

Relative double differential cross sections for electron emission in collisions of heavy projectile ions incident on H{sub 2}, He, and Ar targets were measured for observation angles of 0{degrees} to 90{degrees} with respect to the beam. The measurements were performed over a wide range of projectile charge states (q = 5 to 28) and energies (0.6 to 3.6 MeV/amu). Diffraction effects in the production of binary-encounter electrons, which can be prominent at lower collision energies, were observed even at the higher energies. Energy shifts of the binary-encounter peak from the classical position were found to be dependent on the projectile charge and the angle of observation. The experimental cross sections are compared to a quantum-mechanical impulse approximation and classical nCTMC calculations. Multiple-ionization processes are shown to be important in modeling the ejected electron spectra.

• OSTI ID: 281581
• Report Number(s): CONF-9305421--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 38; ISSN BAPSA6; ISSN 0003-0503
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
DIFFERENTIAL CROSS SECTIONS
ELECTRON EMISSION
HEAVY IONS
HYDROGEN
ION-ATOM COLLISIONS
ION-MOLECULE COLLISIONS
MEV RANGE
RARE GASES