Electron capture in collisions of N[sup +]([sup 5][ital S],[sup 3][ital P]) with He: The effect of metastable ions

Journal Article · Wed Mar 01 04:00:00 EST 1995 · Physical Review A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.51.2063· OSTI ID:6544644

Kimura, M ^[1]; Gu, J P; Hirsch, G; Buenker, R J ^[2]

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1. Argonne National Laboratory, Argonne, Illinois 60439 (United States) Department of Physics, Rice University, Houston, Texas 77251 (United States)
2. Theoretische Chemie, Bergische Universitaet-Gesamthochschule Wuppertal, D-42097 Wuppertal (Germany)

Electron capture in collisions of N[sup +] ions with He atoms is studied by using a molecular representation. Because excitation channels to [ital N][sup +*]([sup 3][ital D]) lie very close to the electron-capture channels, electron capture by the ground N[sup +]([sup 3][ital P]) state, which strongly couples with N[sup +*]([sup 3][ital D]) excitation channels, is dominant below 6 keV. As the energy increases, electron capture by metastable N[sup +*]([sup 5][ital S]) ions becomes dominant due to a smaller energy defect. The excitation cross section to the N[sup +*]([sup 3][ital D]) states and the cross section of electron capture interfere with each other, showing complex patterns of in-phase and out-of-phase oscillations that depend on the energies.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 6544644
• Journal Information: Physical Review A; (United States), Journal Name: Physical Review A; (United States) Vol. 51:3; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CAPTURE
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
D STATES
ELECTRON CAPTURE
ELEMENTS
ENERGY LEVELS
ENERGY RANGE
EXCITED STATES
FLUIDS
GASES
HELIUM
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
KEV RANGE
METASTABLE STATES
NITROGEN IONS
NONMETALS
P STATES
PROJECTILES
RARE GASES
S STATES