Low-energy electron capture cross sections for N{sup 4+} + H using merged beams

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

OSTI ID:281559

Havener, C C; Folkerts, L ^[1]

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1. Oak Ridge National Laboratory, TN (United States)

The ion atom merged beams apparatus at Oak Ridge National Laboratory is being used in conjunction with the recently installed CAPRICE ECR ion source to measure total electron-capture cross sections for collisions of N{sup 4+} + H and D in the range from 0.1 to 1000 eV/amu. A recent quantum mechanical molecular-orbital calculation is in good agreement with our previous measurements which extend down to 1 eV/amu. Another molecular-orbital calculation shows a significantly different energy dependence at the lower collision energies. We will utilize the improved multicharged ion beam quality provided by the new ECR source to extend our measurements to lower energies and to search for the predicted oscillations in the total cross section. In addition, a two-dimensional H{sup +}(D{sup +}) detector has been installed and will be used in an attempt to characterize the angular scattering for this and other collision systems.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 281559
• 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
CROSS SECTIONS
ELECTRON CAPTURE
ELECTRON-ATOM COLLISIONS
HYDROGEN
ION SOURCES
MULTICHARGED IONS
NEON IONS