Molecular treatment of electron capture in collisions of N sup 4+ ions with H atoms

Journal Article · Wed Jan 01 04:00:00 EST 1992 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.45.267· OSTI ID:5080678

Shimakura, N ^[1]; Itoh, M ^[2]; Kimura, M ^[3]

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1. General Education Department, Niigata University, Niigata 950-21 (Japan)
2. Department of Chemistry, Faculty of Science, Niigata University, Niigata 950-21 (Japan)
3. Argonne National Laboratory, Argonne, Illinois 60439 (United States) Department of Physics, Rice University, Houston, Texas 77251 (United States)

Partial and total cross sections of electron-capture processes in collision of N{sup 4+} ions with H atoms are calculated in the collision energy range from 1 eV/amu to 10 keV/amu. Semiclassical and quantum-mechanical molecular-orbital methods with electron translation factors are employed. Two-electron processes are also considered, but they are found to make small contributions at all collision energies. The dominant electron-capture channels are found to be the N{sup 3+}(3{ital p}) state at energies above 300 eV/amu and the N{sup 3+}(3{ital d}) state at energies lower than 300 eV/amu. Three experiments that observed only total cross sections have been reported for this system. The agreement of the present calculation with these measurements is excellent at all energies. In particular, an oscillation observed in the experiment of Huq, Havener, and Phaneuf (Phys. Rev. A 40, 1811 (1989)) is reproduced by our calculation in the energy range 10--300 eV, and the origin of the oscillation is discussed.

• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 5080678
• Journal Information: Physical Review A. General Physics; (United States), Journal Name: Physical Review A. General Physics; (United States) Vol. 45:1; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ACCURACY
ATOM COLLISIONS
CAPTURE
CATIONS
CHARGED PARTICLES
COLLISIONS
CONFIGURATION INTERACTION
CROSS SECTIONS
DATA
ELECTRON CAPTURE
ELECTRONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY DEPENDENCE
ENERGY RANGE
EV RANGE
EV RANGE 10-100
EV RANGE 100-1000
FERMIONS
FOUR-BODY PROBLEM
FUNCTIONS
GAUSS FUNCTION
HYDROGEN
INFORMATION
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
LEPTONS
MANY-BODY PROBLEM
MECHANICS
MOLECULAR ORBITAL METHOD
NITROGEN IONS
NONMETALS
NUMERICAL DATA
PROBABILITY
QUANTUM MECHANICS
SEMICLASSICAL APPROXIMATION
THEORETICAL DATA
TOTAL CROSS SECTIONS
TWO-BODY PROBLEM