Charge transfer and association of protons colliding with potassium from very low to intermediate energies

Journal Article · Fri Jan 15 00:00:00 EST 2010 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.81.012707· OSTI ID:21388732

Liu, C H ^[1]; Qu, Y Z ^[2]; Wang, J G ^[1]; Li, Y; Buenker, R J ^[3]

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1. Institute of Applied Physics and Computational Mathematics, Post Office Box 8009, Beijing 100088 (China)
2. College of Material Sciences and Optoelectronic Technology, Graduate University of the Chinese Academy of Sciences, Post Office Box 4588, Beijing 100049 (China)
3. Fachbereich C-Mathematik und Naturwissenschaften, Bergische Universitaet Wuppertal, D-42097 Wuppertal (Germany)

The nonradiative charge-transfer process for H{sup +}+K(4s) collision is investigated using the quantum-mechanical molecular-orbital close-coupling method for collision energies from 1 eV to 10 keV. The radiative-decay and radiative charge transfer cross sections are calculated using the optical potential approach and the fully quantal method, respectively, for the energy range of 10{sup -5}-10 eV. The radiative-association cross sections are obtained by subtracting the radiative charge-transfer part from total radiative-decay cross sections. The relevant molecular data are calculated from the multireference single- and double-excitation configuration interaction approach. The nonradiative charge transfer is the dominant mechanism at energies above 2 eV, whereas the radiative charge transfer becomes primary in the low-energy region of E<1.5 eV. The present radiative-decay cross sections disagree with the calculations of Watanabe et al. [Phys. Rev. A 66, 044701 (2002)]. The total charge-transfer rate coefficient is obtained in the temperature range of 1-20000 K.

• OSTI ID: 21388732
• Journal Information: Physical Review. A, Vol. 81, Issue 1; Other Information: DOI: 10.1103/PhysRevA.81.012707; (c) 2010 The American Physical Society; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
COLLISIONS
CONFIGURATION INTERACTION
COUPLING
CROSS SECTIONS
EV RANGE 01-10
EXCITATION
KEV RANGE 01-10
MOLECULAR ORBITAL METHOD
POTASSIUM
POTENTIALS
PROTONS
QUANTUM MECHANICS
RADIATIVE DECAY
TEMPERATURE RANGE
ALKALI METALS
BARYONS
CALCULATION METHODS
DECAY
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EV RANGE
FERMIONS
HADRONS
KEV RANGE
MECHANICS
METALS
NUCLEONS
PARTICLE DECAY