Charge exchange between bare beryllium and boron with metastable hydrogen atoms at low energies

• Published in: Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 1993-11, Vol.48 (5A), p.3680-3683
• Main Author: CASAUBON, J. I
• Format: Article
• Language: English
• Subjects: ALKALINE EARTH ISOTOPES; ATOM COLLISIONS; Atomic and molecular collision processes and interactions; ATOMIC AND MOLECULAR PHYSICS; BERYLLIUM 9; BERYLLIUM IONS; BERYLLIUM ISOTOPES; BORON 11; BORON IONS; BORON ISOTOPES; CATIONS; CHARGE EXCHANGE; Charge transfer; CHARGED PARTICLES; COLLISIONS; ELEMENTS; ENERGY LEVELS; ENERGY RANGE; EVEN-ODD NUCLEI; Exact sciences and technology; EXCITED STATES; HYDROGEN; ION COLLISIONS; ION-ATOM COLLISIONS; IONS; ISOTOPES; LANDAU-ZENER FORMULA; LIGHT NUCLEI; METASTABLE STATES; MULTICHARGED IONS; NONMETALS; NUCLEI; ODD-EVEN NUCLEI; Physics; STABLE ISOTOPES 664300 > Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
• ISSN: 1050-2947; 1094-1622
• DOI: 10.1103/PhysRevA.48.3680

Theoretical results for [sup 9]Be[sup 4+]-H(2[ital s]) and [sup 11]B[sup 5+]-H(2[ital s]) partial and total charge-exchange cross sections at low relative velocities (0.027--0.32 a.u.) are given, using the Landau-Zener method. The necessary molecular parameters for this method are obtained from the exact one-electron diatomic molecule (OEDM) molecular energies. The partial cross sections which are mainly populated are those corresponding to the principal quantum number of separated atoms [ital n]=5 for Be[sup 3+] and [ital n]=6 for B[sup 4+]. The total cross sections show a rather strong increase with increasing collision energies and a quite large maximum. They lie between the cross sections corresponding to the neighbor reactions for the incident nuclei with [ital Z]=3 (Li), [ital Z]=6 (C), and [ital Z]=7 (N). The atomic collisions with beryllium are very important in plasma tokamaks.