Charge transfer of N sup 4+ with atomic hydrogen

Journal Article · Thu Oct 01 04:00:00 EDT 1992 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.46.3846· OSTI ID:6947908

Zygelman, B ^[1]; Cooper, D L; Ford, M J ^[2]; Dalgarno, A ^[3]; Gerratt, J ^[4]; Raimondi, M ^[5]

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1. Department of Physics, University of Nevada, Las Vegas, Las Vegas, Nevada 89154 (United States)
2. Department of Chemistry, University of Liverpool, P. O. Box 147, Liverpool L693BX (United Kingdom)
3. Harvard Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138 (United States)
4. School of Chemistry, University of Bristol, Cantocks Close, Bristol BS81TS (United Kingdom)
5. Dipartimento di Chimica Fisica ed Elettrochimica, Universita di Milano, Via Golgi 19, 20133 Milano (Italy)

State-dependent cross sections and rate coefficients for the charge-transfer process N{sup 4+}+H{r arrow}N{sup 3+}(2{ital s}3{ital l})+H{sup +} for {ital l}={ital s},{ital p},{ital d} in the collision-energy range from 0.1 eV to 8 keV are presented. A close-coupled quantum-mechanical method is employed, and it is argued that the molecular-state expansion method without translation factors is a valid low-energy approximation for charge-transfer processes. We show that the method does not suffer from the electron-origin problem. The spin-coupled valence-bond method is used to construct both {ital ab} {ital initio} potential curves and adiabatic coupling elements. The calculated cross sections exhibit variations with energy, which we propose are a manifestation of Stueckelberg oscillations. The cross sections are compared with measured total cross sections for electron capture by N{sup 4+} ions in collisions with hydrogen. Agreement is excellent in the collision-energy range from 4.1 to 182 eV/amu.

• OSTI ID: 6947908
• Journal Information: Physical Review A. General Physics; (United States), Journal Name: Physical Review A. General Physics; (United States) Vol. 46:7; 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
ATOM COLLISIONS
CALCULATION METHODS
CATIONS
CHARGE EXCHANGE
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
ELEMENTS
HYDROGEN
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
MULTICHARGED IONS
NITROGEN IONS
NONMETALS